Probe for sampling particulate matters in telescopic pipeline and use method of probe

Abstract

The invention discloses a probe for sampling particulate matters in a telescopic pipeline and a use method of the probe, and belongs to the technical field of sampling of the particulate matters in natural gas in a pipeline. A sampling pipe head and a speed measurement gas inlet pipe head are fixed at the left end of a sampling nozzle; the right end of the sampling nozzle is fixed at the left end of a piston rod through a thread; a sampling pipe and a speed measurement gas inlet pipe are arranged in the piston rod; an outlet of the sampling pipe is connected with a ball valve; an outlet of the speed measurement gas inlet pipe is connected with a differential pressure transmitter; a sealing ring is arranged between the piston rod and a piston cylinder; a sealing ring is arranged between a flange and the piston cylinder; the piston rod can move left and right in the piston cylinder; the position of the piston rod is locked by a locking block; the left end of the piston cylinder is fixed on the flange; the right end of the piston cylinder is connected with the locking block; the upper end of the piston cylinder is connected with a first needle valve and a second needle valve. The probe disclosed by the invention has the beneficial effects that pressure loading and unloading can be realized; furthermore, sampling of the particulate matters in the natural gas in the pipeline can be realized by changing different depth positions of the probe inserted into the pipeline in a test process, and the sampling representativeness and the accurate reliability of a measurement result are guaranteed.

Description

technical field [0001] The invention relates to a particulate matter sampling probe in a retractable pipeline and a use method thereof, and belongs to the technical field of sampling particulate matter in natural gas in pipelines. Background technique [0002] Particulate matter in natural gas is mainly corrosion products or mechanical impurities in the upstream pipeline of natural gas production, as well as impurities and oil stains entrained when the separator is not operating normally. These particles will wear on the valves, instruments and large compressors of the pipeline, affecting the safety of the entire pipeline Reliable operation, at the same time, the wear of the instrument will also cause a large measurement error of natural gas, and it will also affect the devices and equipment used in natural gas processing and utilization, such as automobile engines using compressed natural gas for vehicles, natural gas turbines and valves for power generation, etc. produce a...

AI Technical Summary

Problems solved by technology

This kind of sampling probe is suitable for high and low pressure pipelines, but it needs to be shut down during installation and disassembly, and the position of the sampling point cannot be changed during the measurement process. In this way, for the measurement of particulate matter in natural gas in the same pipeline, in order to ensure sampling representativeness and measurement The accuracy and reliability of the results, the selection of different sampling points requires different sampling probes, and the installation and disassembly must be carried out under the condition of stopping the operation of the equipment for many times, the operation is complicated, the cost will increase, and the normal operation of the equipment and pipelines will be affected. In the process, single-point sampling is generally used for measurement, and the measurement results are somewhat one-sided

Images