An automatic filling and unloading device for a hydrogen refueling station

Abstract

The invention discloses an automatic filling and unloading device for a hydrogenation station, comprising: an air inlet and an air outlet; the air inlet sequentially passes through a first hand valve, a first automatic cut-off valve, a first filter, and a first check The valve, the second hand valve, the first pull-off valve, and the filling hose are connected to the long tube trailer; the air outlet passes through the third hand valve, the second automatic shut-off valve, the second filter, the second check valve, and the second The four-hand valve, the second breakaway valve, and the air discharge hose are connected to the long tube trailer. The beneficial effect of the invention is that: the use mode can be selected according to requirements. The purge of the unloading and filling device is independent of each other and does not interfere with each other. It can be purged at the same time; it can be automatically emptied and sampled; no manual on-site operation is required, which is safe, convenient and reliable.

Description

technical field [0001] The invention relates to the field of filling of hydrogenation stations, in particular to an automatic filling and unloading device for hydrogenation stations. Background technique [0002] At present, the existing gas filling and unloading systems are relatively complex and uncontrollable in safety. They are all operated manually, with a high failure rate and inconvenient operation and maintenance. When performing gas filling and unloading operations, it is necessary to open the manual valve for unloading. , and can not be unloaded when the gas is filled, and can not be filled when the gas is unloaded, and the function is relatively simple. In the prior art, after the unloading hose is connected by the pipeline, it passes through the intake pull-off valve, the hand valve, the pipeline pressure transmitter, the one-way valve, and then passes through the filter again; while the filling process is designed in the reverse direction, which cannot realize a...

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Problems solved by technology

[0002] At present, the existing gas filling and unloading system is relatively complicated, and the safety is uncontrollable. They are all manually operated, the failure rate is relatively high, and the operation and maintenance are inconvenient; when performing gas filling and unloading operations, it is necessary to open the manual valve for unloading , and the gas cannot be unloaded when the gas is filled, and the gas cannot be filled when the gas is unloaded, and the function is relatively simple

In the prior art, after the unloading hose is connected to the pipeline, it passes through the intake break valve, the hand valve, the pipeline pressure transmitter, the one-way valve, and then passes through the filter again; while the filling process is designed in reverse, and cannot realize automatic filling and degassing

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