Self-absorption crude oil sampler of piston type

Abstract

The invention discloses a self-absorption crude oil sampler of a piston type, comprising a cylinder body (9), a cylinder cover (8), a cylinder bottom (2), a piston (3), a handspike (4) and a valve (1). The cylinder cover (8) and the cylinder bottom (2) are respectively and fixedly connected at the upper end and the lower end of the cylinder body (9); a static seal is formed between the cylinder bottom (2) and the cylinder body (9); the handspike (4) penetrates through an opening in the center of the cylinder cover (8); the piston (3) is pushed to slide up and down along the longitudinal axis of the cylinder body (9); a sliding seal is formed between the piston (3) and the inner wall of the cylinder body (9); and the valve (1) is connected to the cylinder bottom (2) and used as the entry of a sampled oil product. In the invention, the piston is pushed by pressure in a crude oil pipeline to move upwards and finish sampling without using the power driving of pumps, motors, and the like, and the structure is simplified. Meanwhile, because of simple structural part and good sealing performance, the loss of light component substances in crude oil or the evaporation of volatile substances are avoided, and the components of the sampled oil product are surely and truly reflected.

Description

Technical field [0001] The invention belongs to the field of petrochemical technology, and particularly relates to a crude oil field sampling device with a simple structure. Background technique [0002] Samplers are widely used in the petrochemical industry. Whether the samples taken can truly reflect the quality of the samples is of great significance. Therefore, many equipment for sampling crude oil has been designed. [0003] For example, the "On-line Automatic Sampling Device for Crude Oil" of Chinese Patent Application No. 200820211504.8 discloses an on-line automatic sampling device for crude oil. Its working structure and principle are: the sampling probe extends into the crude oil pipeline, and the manual ball valve, filter, circulating pump, mixer, dispenser, flow meter, manual ball valve are connected in turn through the pipeline, and the end also extends into the crude oil pipeline , And the dispenser is connected to the sample receiver, control display and alarm devic...

AI Technical Summary

Problems solved by technology

[0004] These devices use control devices such as circulating pumps, mixers, oil pumps, oil cylinders, etc., and also require external power sources, with complex structures and inconvenient operations.

Moreover, due to the combination of multiple devices, the sealing performance is poor, which is likely to cause the loss of light components in crude oil or the serious volatilization of volatile substances, thus affecting the true reflection of the components of the sampled oil.

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