Intelligent filling gun

Abstract

The invention relates to the technical field of low-temperature or ultralow-temperature application, in particular to an intelligent filling gun and a mating system thereof. The intelligent filling gun comprises a filling gun body, an LNG system, a filling pipeline, a controller and a discharge pipeline. The filling gun body communicates with the LNG system through the filling pipeline. A detector used for detecting whether leakage happens to the filling pipeline or not is arranged on the filling pipeline or the filling gun body. The filling pipeline communicates with the discharge pipeline through a pressure-relief electromagnetic valve. The detector and the pressure-relief electromagnetic valve are electrically connected with the controller. By the adoption of the structure, filling of LNG or other low-temperature media can be made intelligent through the cooperation of the detector, the controller and the electromagnetic valve, leakage detection and pressure relief can be effectively achieved, and thus the situation that personnel injuries are caused by leakage of LNG or other low-temperature media left in the filling pipeline and the filling gun body is prevented.

Description

technical field [0001] The invention relates to the technical field of low temperature or ultra-low temperature applications, in particular to an intelligent filling gun. Background technique [0002] The main structure of the filling gun is the filling gun body. The filling gun body is connected with the vehicle-mounted steel cylinder through the vehicle-mounted filling port to control the flow of the filled medium to the vehicle-mounted steel cylinder. When the filling gun body is connected, the one-way valve core of the filling gun body and the one-way valve core of the filling port are pushed apart to form a medium passage, and the medium can flow smoothly; when the filling gun body is separated from the filling port When it is opened, the one-way valve core of the filling gun body and the filling port is automatically reset and sealed by the action of medium pressure and spring force respectively to ensure no leakage. Before the filling gun body is disengaged from the...

AI Technical Summary

Problems solved by technology

[0004] 1. After the filling gun body is filled, it must be removed to determine whether there is leakage in the filling gun body and must be judged manually, resulting in uncontrollable leakage during use and no corresponding countermeasures. Due to the spraying of ultra-low temperature medium, it will cause safety hazards such as frostbite and other safety hazards

[0005] 2. If the filling gun body is pulled out in the case of leakage, it is easy to endanger the safety of personnel

[0006] 3. The filling gun cannot be purged automatically, which wastes manpower and material resources

[0007] 4. The current filling of the liquid filling gun is to rely on the manual operation of inserting and drawing the gun, and the labor intensity of the personnel is high. Some pneumatic liquid filling guns that appear on the market only have two types: ventilation (inserting the gun) and degassing (drawing the gun). Action, without safety protection measures or when the instrument wind loses pressure, it is easy to cause false action, and at the same time there will be safety problems in the above-mentioned article 1

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