CN2268933Y - Liquid sampler with vertical tube - Google Patents

Abstract

The utility model relates to the technology of collecting samples in a liquid storing pipe, and the utility model is a device which can automatically and proportionally collect the samples of the liquid at each vertical cross section. The utility model is composed of components such as a sampling cannula, a supporting seat, a horizontal pipe, a circulation pump, a valve, etc. The utility model has the advantages of simple structure, convenient installation, favorable repeatability of collected samples, strong representativeness, convenient operation and high safety, and workers can save time and labor. The utility model is used for the petroleum product storing system of an oil refinery or a petrochemical works.

Description

The vertical pipe type liquid sampler.

The utility model relate to a kind of in liquid storage tank the technology of collected specimens, it be a kind of can be automatically the device of vertical each the section sample of collection liquid in proportion.

Petrochemical materials and product adopt fixed basin storage mostly, for measuring jar performance and the quality of interior oil product, need the representative sample of extraction carry out analytical test.Storage tank sampling at present all is to be undertaken by IS03170 " liquid petroleum product sampling method (artificial process) " sampling routine, during sampling, extract to go up respectively (250mm under the liquid level), in, (250mm at the bottom of jar) three kinds of samples mix in 1: 1: 1 ratio down, as the representative sample of this jar.This artificial sample method, poor, the poor repeatability of the representativeness of sample, and the operator is wasted time and energy.For solving the shortcoming of artificial sample,, float pipe sample device and tank skin opening sampling apparatus power type or non-power type sampling apparatuses such as (SU81755) have been developed both at home and abroad according to the interrelated data introduction.

The pipe sample device (consulting Fig. 1) that floats partly is made up of floating drum, sampling pipe, transverse tube etc., the sampling pipe tube wall has oil supply hole, sampling pipe tilts to be dipped within the liquid, edge at the bottom of the lower end of pipe is fixed in jar, the employing hinge is fixed, the upper end of pipe connects floating drum, and floating drum drives sampling pipe constantly motion with the tank level change, and the lower end of sampling pipe connects transverse tube and draws a jar outer sampling.Because situation is very complicated in jar, because of reasons such as stirring, oil-feeds, oil product constantly flows, and makes fixed hinge bear very big moment, easily block or rupture, and be difficult for finding and maintenance that the sample that causes taking does not have representativeness, this sampling apparatus structure is complicated, and installation difficulty is big, the cost height.

The tank skin opening sampling apparatus (consulting Fig. 2) that foreign patent SU81755 introduces, complex structure will be driven a plurality of holes even dozens of hole and the corresponding horizontal sampling pipe of dozens of on jar, and installation difficulty is big; Operation once must be discharged a large amount of oil plants during sampling, and is very dangerous.

The purpose of this utility model is that design is a kind of simple in structure, convenient and practical, relies on the device of machine power collection liquid sample, and this device adopts unitized construction, is convenient to install, and easy to operate, sample representativeness is strong.

The utility model comprises a drive pipe in being installed on jar, draws jar outer sampling transverse tube and be installed in parts such as a jar outer pump, circulation line, thief hatch, valve and form.Drive pipe vertically is installed on a jar zone, inside edge, and drive pipe is made of outer sampling pipe and inner catheter, and outer sampling pipe is uniform-distribution with the oil recovery hole of different-diameter from top to bottom; The drive pipe lower end connects presses bearing, and the central duct of bearing is communicated with the oil recovery hole of outer sampling pipe, also is communicated with the sampling transverse tube; On the sampling transverse tube valve and circulation pump are installed, the outlet of pump connects circulation line and thief hatch, and the circulation line outlet links to each other with basin.In the sampling process, the flow equalization in the hole that keeps respectively recovering the oil, oil product mixes in drive pipe, by ebullator, circulation line returns in the jar, and (replacing the inner trapped fuel of pipe gets final product through circulation after a while, general 3-5 minute), open sampling valve then, bleed off trapped fuel post-sampling in the valve.

In order to reach the purpose of the orifice flow amount equalization of respectively recovering the oil on the drive pipe, must design the aperture that the oil recovery hole changes successively on the drive pipe, these aperture computing method are: $Q=\mathrm{uA}\sqrt{2g\×H}$ Q: orifice flow amount u: coefficient of flow ();

A: oil recovery hole area, H: liquid depth from liquid level to a certain oil recovery hole

Calculate the different liquid of basin drive pipe under the certain liquid level hole area (A) in hole that recovers the oil deeply by following formula, and calculate the aperture bore thus $(d=2\sqrt{A/\mathrm{\π}})$ 。

The utility model further describes by accompanying drawing 3, accompanying drawing 4 and embodiment.

Fig. 3 drive pipe

1, bearing 2, sealing cap 3, outer sampling pipe 4, inner catheter 5, pipe adapter

6, oil recovery hole

Fig. 4 vertical pipe type liquid sampler

3, drive pipe 7, sampling transverse tube 8, thief hatch 9, cycle tube valve

10, transverse tube valve 11, ebullator

The vertical pipe type liquid sampler is made of parts such as drive pipe, bearing, sampling transverse tube, circulation pump, circulation line, thief hatch and valves; Drive pipe vertically is installed on a jar zone, inside edge, drive pipe is to be made of outer sampling pipe (3) and inner catheter (4), outer sampling pipe (3) is combined by the more piece outer tube, connect with pipe adapter (5) between each joint, have the oil recovery hole (6) in several different apertures on every joint outer tube (3), the oil recovery hole equidistantly distributes, and spacing can be 150-250mm, the welding of drive pipe outer tube (3) lower end and sealing cap (2), sealing cap (2) with bearing (1) but seal with screwed joint; Outer tube (3) inside is stretched in the upper end of bearing (1), and welds with inner catheter (4), and the oil recovery hole (6) of the inner duct of bearing (1) and sampling transverse tube (7) and drive pipe is communicated with; Sampling transverse tube (7) is gone up mounted valve (10) and ebullator (11), and circulating-pump outlet is equipped with circulation valve (9) and thief hatch (8) by circulation line and jar formation loop on the circular route.

The utility model is simple in structure, and is easy to operate, safe and reliable, time saving and energy saving.Experiment showed, that sample good reproducibility, the representativeness taked are strong.

Claims (1)

1. A kind of vertical pipe type liquid sampler comprises stopple coupon, ebullator and circulation line etc. partly constitute, it is characterized in that stopple coupon is a kind of sleeve pipe, it vertically is installed on zone, basin inside edge, drive pipe is made of outer sampling pipe (3) and inner catheter (4), outer sampling pipe (3) is combined by more piece again, connect with pipe adapter (5) between every joint, the outer tube of sleeve pipe (3) lower end and sealing cap (2) welding, sealing cap (2) and bearing (1) seal with screwed joint, also interior and inner catheter (4) the lower end welding of outer tube (3) is stretched in the upper end of bearing (1), the inner duct of bearing (1) is communicated with the oil recovery hole (6) and the sampling transverse tube (7) of drive pipe, transverse tube (7) jar outer part mounted valve (10) and ebullator (11), the outlet of pump (11) is provided with thief hatch (8) and circulation line is installed and is communicated with in the jar, and circular route is provided with valve (9).

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