Pneumatically-controlled emergency cutoff device
A cutting device, pneumatic control technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system safety, fluid pressure actuation system components, etc., can solve problems such as poor safety, achieve fast response speed, avoid casualties, The effect of improving safety
Active Publication Date: 2020-04-14
ZHEJIANG KIN SHINE TECH
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Problems solved by technology
[0003] The present invention provides an improved filling or unloading control system for solving the problems of poor safety of the filling or unloading operation control system of the existing tank truck with a pump, and the above-mentioned safety accidents are easily caused by improper operation of operators. The safety of liquid operation, avoiding the emergency cut-off device of pneumatic control that causes safety accidents such as fire and explosion
Method used
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Embodiment Construction
[0011] figure 1 In the shown embodiment, a pneumatically controlled emergency shut-off device includes a gas circuit unit, a liquid phase emergency shut-off valve 20 and a gas phase emergency shut-off valve 10, and the gas circuit unit includes a gas cylinder 50, an air filter 60, Pressure regulating valve 40, straight-through connector, two-position three-way electromagnetic reversing valve 30, double-acting cylinder and high-pressure gas delivery pipeline, high-pressure gas delivery pipeline such as liquefied gas delivery pipeline; gas storage cylinder 50 and air filter 60 The air inlet is connected, and then the air outlet of the air filter 60 is connected with the air inlet of the pressure regulating valve 40, and the air outlet of the pressure regulating valve 40 is connected with the air inlet of the two-position three-way electromagnetic reversing valve 30 through a straight-through joint, and the two-position three-way The air outlets of the electromagnetic reversing v...
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The invention discloses a pneumatically-controlled emergency cutoff device. The device comprises an air channel unit, a liquid phase emergency cutoff valve and a gas phase emergency cutoff valve, andthe air channel unit comprises an air storage bottle, an air filter, a pressure regulating valve, a straight joint, a two-position three-way electromagnetic reversing valve, double-acting cylinders and a liquefied air conveying pipeline; the air storage bottle is connected with the air inlet of the air filter, the air outlet of the air filter is connected with the air inlet of the pressure regulating valve, the air outlet of the pressure regulating valve is connected with the air inlet of the two-position three-way electromagnetic reversing valve through a three-way joint, the air outlet of the two-position three-way electromagnetic reversing valve is connected with the two double-acting air cylinders, the two double-acting air cylinders are in control connection with the liquid phase emergency cutoff valve and the gas phase emergency cutoff valve respectively, and the liquid phase emergency cutoff valve and the gas phase emergency cutoff valve are controlled to be closed through stretching and retracting of the double-acting air cylinders respectively. The safety of liquid filling or liquid discharging operation is improved, and safety accidents such as fire disasters and explosion are avoided.
Description
technical field [0001] The invention relates to a control system for a vehicle, in particular to a pneumatically controlled emergency cut-off device used on a tank truck with a pump for transporting liquefied gas. Background technique [0002] At present, liquefied petroleum gas is widely used as clean energy in various purposes. Although underground pipelines can be used to transport liquefied petroleum gas in cities or relatively developed market towns to meet people's various use needs; and in remote mountainous locations, Due to the comprehensive influence of the geographical environment in remote mountainous areas, it is difficult to provide people with convenient channels for the use of liquefied gas by laying pipelines for ventilation. Usually, the liquefied gas is transported to remote mountainous locations by different vehicles to provide liquefied gas for people to use, and some In order to improve the efficiency of transportation and handling operations, the trans...
Claims
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IPC IPC(8): F15B13/02F15B20/00F15B19/00F15B21/041F15B21/08
CPCF15B13/02F15B20/00F15B19/00F15B21/041F15B21/08
Inventor周利国王建中王华东王继新
OwnerZHEJIANG KIN SHINE TECH