Nitrogen-phosphorus detector of gas chromatograph

Abstract

The invention provides a nitrogen-phosphorus detector of a gas chromatograph and belongs to the technical field of analytical test instruments. The nitrogen-phosphorus detector consists of a jet nozzle base with a sliding rail, a jet nozzle, an integral rubidium bead, a collecting cylinder, a support body, a screw rod, a heating block, a heat preservation box and the like. The support body can be driven to vertically moved on the sliding rail of the jet nozzle base only by turning the screw rod, the rubidium bead and a ceramic ring on the support body also vertically move on the jet nozzle, accordingly the distance from the rubidium bead to the upper portion of the jet nozzle can be very conveniently adjusted, and it can be ensured that the rubidium bead and the jet nozzle are concentric. Due to the fact that a rubidium bead bracket and the rubidium bead is connected with the ceramic ring provided with a hole in the center and provided with a clamp groove and a clamp hole, rubidium bead droop in the working process is prevented; the collecting cylinder and the rubidium bead are fixed to the same support body, it is ensured that the distance between the collecting cylinder and the rubidium bead is fixed, so that it is ensured that the jet nozzle, the rubidium bead and the collecting cylinder are concentric and coaxial, the two distances are ensured, and the sensitivity and stability of the nitrogen-phosphorus detector of the gas chromatograph are ensured.

Description

technical field [0001] The invention belongs to the technical field of analytical testing instruments, and relates to a structural design of a nitrogen and phosphorus detector of a gas chromatograph. Background technique [0002] The gas chromatograph nitrogen and phosphorus detector is used to detect the nitrogen-containing and phosphorus-containing organic chemical components separated by the chromatographic column. It is a transducer that converts chemical component signals into electrical signals. It is a gas chromatograph. Selective detector, dedicated to the detection of trace nitrogen and phosphorus organic compounds. The sensitivity and stability of the nitrogen and phosphorus detector of the gas chromatograph are mainly determined by its internal structure, in addition to the relevant gas flow and temperature conditions provided by the outside. Its internal structure requires that the nozzle, the rubidium bead and the collection cylinder are concentric and coaxial....

AI Technical Summary

Problems solved by technology

[0004] Beneficial effects of the present invention: solve the problem that the distance between the rubidium beads of the nitrogen and phosphorus detector device of the gas chromatograph and the top of the nozzle is difficult to adjust, is cumbersome and difficult to be concentric and the problems of the rubidium beads drooping, and ensures the sensitivity and stability of the nitrogen and phosphorus detector of the gas chromatograph sex

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