2results about How to "Avoid compromising measurement accuracy" patented technology

The mixed type double-layer spiral reaction chamber comprises a first reaction chamber and a second reaction chamber which are sequentially arranged in the sample injection direction, and the first reaction chamber comprises a first double-layer spiral pipe composed of a first spiral pipe and a second spiral pipe which are arranged in a winding mode; the second reaction chamber comprises a second double-layer spiral pipe consisting of a third spiral pipe and a fourth spiral pipe which are wound with each other; the first spiral tube is detachably connected with the third spiral tube, and the second spiral tube is detachably connected with the fourth spiral tube, so that second channels for detecting the peroxide concentration in the sample are respectively formed. Different from an existing double-channel detector, the hybrid double-layer spiral reaction chamber provided by the invention has the advantages that the common part of the two channels is increased to the maximum extent through the double spiral channels, the sensitivity of equipment is improved, the use of parts and the volume and weight of the equipment are reduced, and the portability and the real-time detection sensitivity of the equipment are improved.

The utility model relates to the technical field of chain production, in particular to a chain sleeve and pin shaft gap detection device which comprises a sleeve limiting structure, a hollow pin shaft fixing structure and a gap gauge, the sleeve limiting structure comprises a bottom plate, a lifting sliding block is slidably installed on the edge of the rear side of the upper surface of the bottom plate, and sleeve clamping jaws are slidably installed at the two ends of the front side of the lifting sliding block; the hollow pin shaft fixing structure comprises a base column, the base column is fixedly installed in the middle of the upper surface of the bottom plate, and supporting pieces are clamped to the two sides of the base column; and the clearance gauge is accommodated at one side of the lifting slide block. The sleeve and the hollow pin shaft are connected in a sleeved mode, the hollow pin shaft is connected to the base column in a sleeved mode, the two sleeve clamping jaws are synchronously controlled to be close to each other, the sleeve is forcibly centered and clamped, the supporting pieces on the two sides are synchronously expanded and unfolded, the hollow pin shaft is forcibly centered and limited, and meanwhile the pin shaft and the center shaft of the sleeve are completely overlapped. At this time, the gap gauge is taken out and inserted into the gap between the sleeve and the pin shaft for measurement, thereby visually obtaining accurate data.