Special thread-sealing type sampler for oil chromatography test

Abstract

The invention relates to a special thread-sealing type sampler for an oil chromatography test. The special thread-sealing type sampler comprises a round cover body and a round drum body, wherein a pushing rod extending rightwards is fixedly connected with the inner side of the center of the round cover body; a core-plug column head is fixedly arranged at the right end of the pushing rod; a cover body thread extending leftwards is manufactured from the right end of the inner side of the side wall of the round cover body; a reading pointer extending rightwards is fixedly arranged at the right end head of the side wall of the round cover body; a drum body thread extending rightwards is manufactured from the left end of the outer side of the side wall of the round drum body; a volume scale ring is manufactured at the right side of the drum body thread; the round drum body is provided with a pipeline and an exhausting and oil-discharging valve which are communicated with the inner part of the drum body; the bottom surface of the right side of the round drum body is provided with a pipeline and an oil pumping valve which are communicated with the inner part of the drum body; the cover body thread is screwed with the drum body thread; the outer diameter of the core-plug column head is same as the inner diameter of the drum body. The special thread-sealing type sampler has the advantages that contact between oil and air is avoided, the volume in a container can be fixed after quantitative sampling, overpressure or cavitation in the container can be avoided and sampling errors are reduced.

Description

technical field [0001] The invention belongs to the technical field of insulating medium analysis instruments, in particular to a screw-sealed sampler specially used for oil chromatography test. Background technique [0002] At present, glass syringes of various specifications are generally used for sampling in chromatographic tests of transformer insulating oil, but in the field sampling process, the sealing and sampling process of glass syringes is relatively complicated. After sampling with a rubber head to seal, due to the quality of the rubber head or the aging of the rubber, it may fall off or the syringe is not tightly sealed. During the shaking extraction process, the glass syringe may fall out of the card slot and be damaged, resulting in sample preparation failure. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a threaded sealing type sampler specially used for oil chromatogra...

AI Technical Summary

Problems solved by technology

[0002] At present, glass syringes of various specifications are generally used for sampling in chromatographic tests of transformer insulating oil, but in the field sampling process, the sealing sampling process of glass syringes is more complicated

After using the rubber head to seal after sampling, due to the quality problem of the rubber head or the aging of the rubber, it may cause falling off or the syringe is not tightly sealed

During the shaking extraction process, the glass syringe may fall out of the card slot and be damaged, resulting in sample preparation failure

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