2 results about "Test patch" patented technology

The application provides a gas-solid two-phase erosion test device with an in-pipe patch, which comprises a control system, a gas supply system, a feeding system, a heating system and a gas-solid separator; the control system is connected with the gas supply system, the feeding system and the heating system; the heating system comprises a test pipe section, a heat tracing band, a temperature controller and a plurality of test patches; the temperature controller is on the test pipe section, the heat tracing band is wound on the outer wall of the test pipe section and is connected with the temperature controller; the plurality of test patches are arranged on the inner wall of the test pipe section, the plurality of test patches are distributed along the circumferential direction of the test pipe section, and the angle between each test patch and the inner wall of the test pipe section is the same or different. The minimum adjustable number of the device is 1°, the device can be used for small erosion angle experiments and the angle is easy to control, in addition, the test range is large, the test method is more accurate, and the temperature can be accurately controlled; the whole system is a semi-automatic system and is easy to operate.

Dual-compartment sachet. Flexible sachet (10) containing at least one composition, comprising at least two walls (12, 13) welded together and delimiting a main compartment (16) and a secondary compartment (17) for a test patch, having a smaller capacity than the main compartment, the main compartment being filled with said composition and the two compartments communicating with each other by at least one passage (18; 18a) of reduced cross-section, the sachet having a first opening zone (30) to be opened to empty the secondary compartment (17), the first opening zone (30) being disposed downstream of the passage (18; 18a) of reduced cross-section, the secondary compartment (17) being arranged to contain a maximum volume of composition of between 0.2 mL and 2 mL, in particular between 0.2 mL and 1 mL. Figure for abbreviation: Fig. 1