| 摘要 |
1. A method for taking samples for analysis from slurry flows containing solids, in which method a two-step sampling is applied; in the first step, there is applied primary sampling, and in the second step, secondary sampling, characterized in that the speed of the flow entering the primary sampler (2) is essentially equal to the speed of the process flow (1), but higher than the speed of the flow in the surroundings of the secondary sampler (5), wherein the second sampling is taken from the flow entering the primary sampler or conduit piece connected to the primary sampler (2). 2. A method according to claim 1, characterized in that the speed of the flow entering the primary sampler (2) is adjusted by utilizing the kinetic energy contained in the process flow (1). 3. A method according to claim 1 or 2, characterized in that the speed of the flow entering the primary sampler (2) can be adjusted by adjusting the cross-section of the flow. 4. A device for taking samples from slurry flow according to claim 1, characterized in that the primary sampler (2) represents the flow-through type, and that the secondary sampler (5) is installed in the outlet side thereof. 5. A device according to claim 4, characterized in that the secondary sampler (5) is installed inside the primary sampler (2) or inside a conduit piece connected to the primary sampler (2). 6. A device according to claim 4, characterized in that the secondary sampler (5) is installed outside the primary sampler (2), in the immediate vicinity of the outlet opening of the flow from the primary sampler (2). 7. A device according to any of claims 4-6, characterized in that the secondary sampler (5) is installed in a direction deviant from the direction (1) of the main process flow. 8. A device according to any one of claims 4-6, characterized in that the secondary sampler (5) is installed in a conduit piece (3) connected to the primary sampler (2) in a direction that is deviant from the direction (1) of the main process flow. 9. A device according to any one of claims 4-6, characterized in that the secondary sampler (5) is installed in an inclined position with respect to the direction of main process flow (1). 10. A device according to any one claims 4-6, characterized in that the secondary sampler (5) is installed in a slant position with respect to the direction of the main process flow (1). 11. A device according to any one of claims 4-10, characterized in that in front of the secondary sampler (5), there is installed a sieve (4). 12. A device according to any one of claims 4-11, characterized in that in front of the secondary sampler (5), there is installed a flow guide (9).
|
