Ground disconnecting alarm
A technology for alarms and alarm bells, which is applied in alarms, instruments, voltage/current isolation, etc., can solve the problems of unobtrusive on-site vision, inconvenient observation, and small ringtones, etc., to reduce the workload of circuit debugging, high sensitivity, The effect of reducing quality requirements
Active Publication Date: 2010-08-25
JIANGSU JINGONG TECH GROUP
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Problems solved by technology
At present, the grounding alarms used in the common measurement methods on the marke
Method used
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The invention discloses a ground disconnecting alarm, which is designed for preventing static hazard with site alarm display and switch signals to be outputted to a computer control system during loading and unloading of liquid petroleum products in an oil depot area. The alarm is mainly suitable for inflammable and explosive places of petrochemical industry, oil depot goods delivery stations, gas stations, tank trucks loading and unloading and the like for static grounding to control monitoring alarm, which ensures that static conduction in oil delivery operation is reliably ensured. The alarm comprises an alarm circuit, a control signal circuit, an alarm circuit box, a control signal circuit box and connection cables, wherein the alarm circuit box is connected with the control signal circuit box by the connection cables and is internally provided with a printed circuit board and an electronic element; the control signal circuit box is internally provided with a relay, an indicator light and an alarm bell; and the alarm circuit comprises a power transformer T, bridge rectifiers D1 to D4, a transistor D5, a photocoupler D6, a bidirectional thyristor D7, capacitors C1 and C2 and resistors R1 to R5.
Description
ground alarm technical field The off-off alarm device of the present invention relates to an on-site off-off alarm device designed to prevent electrostatic hazards during loading and unloading of liquid petroleum products in an oil depot area and has an on-off off-off alarm device outputting a switch signal to a computer control system. The device is mainly suitable for static grounding control monitoring and alarming in petrochemical, oil depot delivery platforms, gas stations, oil tanker loading and unloading and other flammable and explosive places, so that the static electricity conduction in the oil delivery operation is reliably guaranteed. Background technique During the process of loading and unloading liquid petroleum products by tank trucks, since liquid petroleum flows in equipment or pipelines, it is easy to generate static electricity. When the static voltage is greater than 350V, its discharge sparks can cause liquid petroleum to burn and explode. In order to...
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Inventor 杨宏运王泽铭朱万祥
Owner JIANGSU JINGONG TECH GROUP
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