Fluid sampling bottle usable in deep bore holes
First Claim
1. A fluid sampling bottle usable in deep bore holes having a central body (2) within which is defined a sampling volume (4), means for the fluid filling of said sampling volume (4) when the bottle is located on a sampling site (1), means for closing the sampling volume (4) when the bottle is filled with fluid and a tap (24) for emptying the sampling volume (4), characterized in that the fluid filling means and the means for closing the sampling volume are constituted by a non-return valve (6) placed in a filling sleeve (8) located on a filling pipe (10) linked with the exterior by at least one outer end (12) and with the sampling volume (4) by an inner end (14), the non-return valve (6) being equipped with a spring (16) calibrated to a predetermined pressure difference value for stopping the filling when said pressure difference between the sampling volume (4) and the sampling pipe (10) intake has reached said predetermined value, a longitudinal piston (20) actuated by a motor (18) for freeing the filling pipe (10) before filling and obstructing it after filling and the tap (24) is used for forming a vacuum in the sampling volume (4) prior to the use of the bottle.
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Accused Products
Abstract
A sample bottle makes it possible to sample mixtures of water and gases in deep bore or drill holes. The filling of the volume (4) of the bottle is obtained by placing a volume (4) under a vacuum beforehand. Once in place, the pipe (10) is opened by withdrawing the piston (20) and opening the valve (6). Once the pressures balance, the valve (6) closes again and the piston (20) is reintroduced into the sleeve (8). Pressure compensation is provided by a sliding valve member (46). Emptying takes place by means of the tap (24), which is also initially used to place the volume (4) under a vacuum. The sample bottle is applicable to geothermy, nuclear power stations, oceanography and geochemistry.
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Citations
9 Claims
- 1. A fluid sampling bottle usable in deep bore holes having a central body (2) within which is defined a sampling volume (4), means for the fluid filling of said sampling volume (4) when the bottle is located on a sampling site (1), means for closing the sampling volume (4) when the bottle is filled with fluid and a tap (24) for emptying the sampling volume (4), characterized in that the fluid filling means and the means for closing the sampling volume are constituted by a non-return valve (6) placed in a filling sleeve (8) located on a filling pipe (10) linked with the exterior by at least one outer end (12) and with the sampling volume (4) by an inner end (14), the non-return valve (6) being equipped with a spring (16) calibrated to a predetermined pressure difference value for stopping the filling when said pressure difference between the sampling volume (4) and the sampling pipe (10) intake has reached said predetermined value, a longitudinal piston (20) actuated by a motor (18) for freeing the filling pipe (10) before filling and obstructing it after filling and the tap (24) is used for forming a vacuum in the sampling volume (4) prior to the use of the bottle.
Specification