Clean-up Pneumatic Tank Sampler

Abstract

A tank-free pneumatic under-tank sampler, which consists of an outer part and an inner part of the tank. When the storage tank is a floating roof tank, the outer part of the tank includes the oil pipeline outside the tank, connecting flanges, exhaust valves, protection Pipe joints, intake pipe joints, oil outlet pipe joints, oil return pipe joints, columns, operation box brackets, several support frames, operation box parts, protection pipelines, several U-shaped clips, scale code belts, steel wire ropes and cross connectors, tanks The external oil pipeline is composed of the intake pipeline, the oil outlet pipeline with an emergency ball valve installed on the upper port, and the oil return pipeline; the inner part of the tank includes the oil pipeline in the tank, 3 hose clamps, the pulley assembly, and submerged sampling Device, wire rope clamp, sampling oil pipe and counterweight, the oil pipeline in the tank is composed of inlet hose, oil outlet hose and return air hose; when the storage tank is a vaulted tank, the outer part of the tank also includes a Tightening device, the inner part of the tank also includes a guide wire and a counterweight iron. It is easy to install, free from tank cleaning, easy to maintain, and accurate in sampling.

Description

technical field [0001] The invention relates to a sampler, in particular to a tank-free pneumatic under-tank sampler. Background technique [0002] At present, in petrochemical production, in order to obtain the performance parameters of the medium in the storage tank, it is necessary to sample and test the liquid stored in the storage tank in time. At present, my country's petrochemical enterprises implement the sampling standard of ISO 3170 (GB / T4756-1998) "Manual Sampling of Petroleum Liquid Products". The sampling operation requires sampling personnel to climb to the top of the tank and use sampling barrels for sampling, which is time-consuming and laborious. When suffering from bad weather or toxic gases volatilized on site, it often threatens the health and even life safety of sampling workers. [0003] As petrochemical companies now have higher and higher requirements for safe and environmentally friendly production and improved working environment for employees, more...

AI Technical Summary

Problems solved by technology

The existing defects of the under-tank sampler are: 1) During the installation process of the sampler, the tank needs to be cleared first, and the hot condition in the tank can only be installed and used. The installation period is long; when the tank is cleaned, the tank needs to be removed. The internal medium is cleaned. The general steps of cleaning the tank include oil discharge→fumigation→ventilation→reaching the conditions of people entering and hot fire in the tank, then cleaning→rust removal→painting and other processes, and then personnel can enter the tank for installation. Cleaning the tank The steps are complicated, and it takes 15-30 days in the middle, which is time-consuming, laborious, and wastes financial and material resources, which affects normal production; 2) When the internal parts of the storage tank fail, the fault can only be eliminated after the tank is cleaned; 3) In the laboratory analysis In the process, when there is a layered medium in the tank, it is necessary to take a sample per meter, or a sample at a fixed position, the existing sampler under the tank cannot meet the requirements of the test; At that time, petrochemical enterprises implemented the sampling standard of ISO 3170 (GB / T4756-1998) "Manual Sampling Method for Petroleum Liquid Products", requiring the position error to be between ±100mm. The height of the sampling position in the tank cannot be directly observed; 4) The scope of application is narrow, only suitable for certain storage tanks and sampling of certain types of petroleum liquid products

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