Who has information on oil storage tank samplers?

The sampling valve assembly for the bottom sampler of the oil storage tank consists of pipelines and valves for sampling and circulation; a three-way ball valve is used as both the sampling valve and the circulation valve. The inlet of this three-way ball valve is connected to the sampling pipe leading from inside the tank, one outlet leads to the manual circulation pump, and the other outlet serves as the sampling port. When it is necessary to take an oil sample, first rotate the handle of the three-way valve to align the flow orifice inside the valve core with the upper circulation pipeline. Use a hand pump to send the oil in the pipeline back to the storage tank through the return pipe. Once the circulation is complete, stop the pump. Then rotate the handle of the three-way valve again to align the flow orifice inside the valve core with the lower sampling port; the oil that flows out from this port is the sample to be collected. This utility model features a simple structure and is easy to implement. It completely solves the problem of oil replacement in the sampling valve and sampling pipelines, saves oil resources, eliminates safety hazards, and reduces environmental pollution.

I will delete this post in 2 hours. Last edited by Logistics Engineer on 2009-4-3 11:05.]

Purpose: The floating sampler is installed on the storage tank; its inner tube floats up and down within the tank along with the liquid level. Operators can take samples from the liquid inside the tank at high, medium, and low positions from outside the tank, without the need to climb onto or open the tank, making it extremely convenient to use. Installation: The external piping of the floating sampler requires holes to be drilled in the tank wall and welded there; the internal sampling tube is connected inside the tank via threads and pins, making the installation simple. Usage: When in use, first determine the pipeline from which sampling is to be taken; for example, if it is at a higher level, open the valve at that higher position and crank the hand pump a certain number of times to pump the oil currently present in the pipeline back into the tank. Then open the valve slightly to obtain an accurate liquid sample from the sampling port at that higher level. In the same way, liquid samples can also be obtained from levels that are intermediate or lower.

A leading manufacturer of professional automatic sampling devices for storage tanks, offering superior principles, performance, and quality – Beijing Century Kaituo Equipment & Instruments Co., Ltd. Phone: 010-57018538, 57263297; Mobile: 13801021822; E-mail: chemtool@126.com. The sampling devices produced by our company feature a truss structure made of stainless steel tubes that allow for proportional expansion and contraction. This design ensures that the stress on the truss within the oil is nearly zero, enabling the entire truss to rise and fall proportionally with the liquid level. As a result, the sampling points on the truss also change in proportion, always meeting the requirements specified in the \"Manual Sampling Method for Petroleum Liquids\". An highly integrated modular control box is used outside the tank; 3 specially designed valves (sampling devices from other manufacturers typically come equipped with 7–12 valves or more) handle a. the emergency shut-off function, b. sample selection and switching, and c. the functions of cycling through \"dead samples\"/taking samples as a whole. The independently developed circulation pump can be used with all types of oils (from naphtha to asphalt). The specially designed two-position multi-way emergency shut-off valve ensures that any component can be repaired or replaced while the tank is still in operation. The specially designed sample selection switch valve can be rotated in either direction. A special sampling valve guarantees that no dead samples are included in each sample collected, and there are testing devices available to determine whether the oil is flowing during the cyclic replacement of the sampling device. The automatic sampling device for storage tanks in our company can easily collect samples from 5 points specified by the standards: an upper sample (at 1/6 of the depth below the liquid surface), a middle sample (at 1/2 of the depth below the liquid surface), a lower sample (at 5/6 of the depth below the liquid surface), a bottom sample (from the surface of the tank bottom), and an outlet liquid level sample (at the corresponding depth below the outlet of the tank). It is also possible to set up a rapid combined sample (a. Upper sample: Middle sample: Lower sample = 1:1:1, or b. Upper sample: Middle sample: Outlet liquid level sample = 1:1:1), with the volume error of the combined sample being no more than 1%. Currently, it has been applied in most petrochemical enterprises across the country, with a total of nearly 2,000 units in use. Through continuous technical improvements, the product has reached a maintenance-free quality level.

This post was last edited by Dancing Moonlight on 2014-3-19 10:39