Assertion: liquid ethylene | /r/Causes | security incident
Facets:
Source sentences:
text: As shown in Figure 2, this arm of unloading a ship also comprises quick release unit 218, and this quick release unit 218 comprises: be positioned at the mechanical chain mechanism of outer arm 208 near the end position of ethene output header; And each ball valve of these mechanical chain mechanism both sides, under the normal condition, mechanical chain mechanism is in chain state; Two ball valves all are in the state of unlatching; Thereby make liquid ethylene waltz through liquid ethylene output header and get into outer arm, but when the pulling force that mechanical chain mechanism receives surpassed the pulling force setting value, these two ball valves cut off the transfer passage of the liquid ethylene that self belongs to a side respectively through mechanical chain mechanism; Promptly a ball valve cuts off the liquid ethylene output channel that ethene is exported header end one side; Thereby stop the output of liquid ethylene, another ball valve cuts off the liquid ethylene input channel on the outer arm, thereby stops the input of liquid ethylene; Mechanical chain mechanism can automatic disconnection; Thereby make outer arm 208 and ethene output header break away from annexation, prevent jolting or the excessive damage of the mobile range arm of unloading a ship of liquid ethylene cargo ship, cause liquid ethylene to reveal and cause security incident.
text: As shown in Figure 2, this arm of unloading a ship also comprises quick release unit 218, this quick release unit 218 comprises: be positioned at the mechanical chain mechanism of outer arm 208 near the end position of ethene output header, and each ball valve of these mechanical chain mechanism both sides, under the normal condition, mechanical chain mechanism is in chain state, two ball valves all are in the state of unlatching, thereby make liquid ethylene waltz through liquid ethylene output header and enter outer arm by mechanical chain mechanism, but when the pulling force that mechanical chain mechanism is subjected to surpasses the pulling force setting value, these two ball valves cut off the transfer passage of the liquid ethylene of self place one side respectively, promptly a ball valve cuts off the liquid ethylene output channel that ethene is exported header end one side, thereby stop the output of liquid ethylene, another ball valve cuts off the liquid ethylene input channel on the outer arm, thereby stop the input of liquid ethylene, mechanical chain mechanism can automatic disconnection, thereby make outer arm 208 and ethene output header break away from annexation, prevent jolting or the excessive damage of the mobile range arm of unloading a ship of liquid ethylene cargo ship, cause liquid ethylene to reveal and cause security incident.