Gas sampling device and filling station comprising such a device
The invention relates to a gas sampling device for a filling station for hydrogen tanks, said device comprising a circuit comprising a first upstream end provided with an inlet connector to a detachably connected to an outlet connector of a filling station, and two conduits respectively for sampling and filling connected in parallel to the inlet connector, the sampling conduit comprising a valve system, a first pressure reducing valve and a container for collecting a sample of gas expanded by said first pressure reducing valve, and the filling conduit comprising a downstream end provided with a first outlet connector to a detachably connected to an inlet connector of a tank to be filled.
1. A gas sampling device for a hydrogen tank filling station, the device comprising a circuit comprising:
a first upstream end provided with an inlet connector intended to be connected removably to an outlet connector of a filling station:
a sampling pipe comprising a system of valves, a first pressure regulator and a container for collecting a sample of gas expanded by said first regulator;
a filling pipe comprising a downstream end provided with a first outlet connector intended to be connected removably to an inlet connector of a tank that is to be filled, wherein the sampling pipe and the filling pipe are connected in parallel to the inlet connector of the first upstream end of the circuit; and
a vent pipe comprising at least one pressure-sensitive relief valve, the vent pipe having a downstream discharge end opening to the outside of the device, a first upstream end connected to the sampling pipe upstream of the collecting container, and a second upstream end connected to the sampling pipe downstream of the collecting container.
2. The device of claim 1 , wherein the sampling pipe further comprises at least one calibrated orifice situated upstream of the first pressure regulator between the inlet connector and the first pressure regulator.
3. The device of claim 1 , wherein the sampling pipe further comprises a calibrated orifice situated downstream of the first regulator between the first regulator and the collecting container.
4. The device of claim 1 , wherein the sampling pipe further comprises first and second calibrated orifices arranged in series upstream of the first regulator between the inlet connector and the first regulator, the first calibrated orifice having dimensions greater than that of the second calibrated orifice.
5. The device of claim 1 , wherein the sampling pipe further comprises, downstream of the collecting container, a valve and a second outlet connector for withdrawing sample gas taken from the collecting container.
6. The device of claim 5 , wherein the sampling pipe further comprises a second pressure regulator situated between the collecting container and the second outlet connector.
7. The device of claim 1 , wherein a first isolation valve is disposed upstream of the first regulator.
8. The device of claim 7 , wherein a second isolation valve is disposed between the first regulator and the collecting container.
9. The device of claim 8 , wherein a third isolation valve is disposed downstream of the collecting container.
10. The device of claim 1 , wherein it is arranged and configured to be a manually transportable.
11. A filling station for filling hydrogen tanks, comprising a gas sampling device of claim 1 .