Closed sampling device with fast connectors

Abstract

The invention discloses a closed sampling device with fast connectors. The closed sampling device comprises a sampling stretching frame, the sampling stretching frame is provided with sampling openings, all the sampling openings are connected and gathered to a flange short joint through sampling pipes, the flange short joint is connected with a sampling valve, and the sampling valve is connected with sampling bottles through oil outlet pipes; the closed sampling device further comprises an oil returning pipe which is communicated with each oil outlet pipe through a communication valve, and the tail end of each oil outlet pipe is provided with a fast connector assembly which is composed of one upper connector installed on the oil outlet pipe and one lower connector installed on a bottle cover of the corresponding sampling bottle; when sampling is performed, lower valve bodies of the lower connectors are connected to upper valve bodies of the upper connectors in a sleeving mode, elastic valve elements are opened, and closed sampling can be performed. According to the sampling device, a sample in the oil returning pipe can be recycled, the freshness of the sample is guaranteed, the whole sampling process is fast, efficient and sealed, the sampling safety is guaranteed, and it is guaranteed that the sample cannot be polluted by outside media.

Description

technical field [0001] The invention relates to sampling equipment in the field of petrochemical industry, in particular to a closed sampling device with a quick joint. Background technique [0002] Many substances in the petrochemical industry are toxic, harmful and volatile substances, such as benzene and gasoline. Under normal circumstances, when the operator takes samples, he uses ground-mouth bottles to perform open-top sampling at the sampler. In this way, toxic, harmful and volatile substances can easily escape through the opening of the grinding bottle, or splash on the operator, which is easy to cause injury to the operator and is very unsafe. Therefore, when sampling, we should try our best to prevent these media from posing a threat to the safety of personnel. [0003] Moreover, some existing samplers tend to have sample residues at the sample outlet, and the samples are prone to deterioration in the air, and the residual samples will be mixed into the next samp...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned technical problems, the present invention provides a closed sampling device with a quick connector to solve the problems of the existing chemical liquid down sampler, such as poor sealing and easy leakage and sample contamination, when sampling. A closed sampling device with a quick connector is designed, and an oil return pipe is set to realize closed sampling. The sample will not come into contact with the outside world during the entire sampling and return process, which ensures the reliability of the test results of the sampled sample and prevents Leakage will cause harm to the staff and pollute the working environment, and is suitable for sampling toxic or perishable liquid materials

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