CN2661608Y

CN2661608Y - Sampling valve block of sampler under oil tank

Info

Publication number: CN2661608Y
Application number: CN 200320105017
Authority: CN
Inventors: 周继宏; 冯斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-23
Filing date: 2003-10-23
Publication date: 2004-12-08
Anticipated expiration: 2013-10-23

Abstract

The utility model discloses a sample valve group of a sampler of oil tank, which comprises a sampling and recycle pipe and a valve. A tee ball valve is adopted as a shared sampling valve and a recycle valve. The inlet of the tee ball valve is connected with the sampling pipe which is introduced from the tank, an outlet goes into a recycling pump, and the other outlet can be used as a sampling point. When collecting sample, the pump is run to delivery accumulating oil back to the tank from the oil sampling tube, the pump is stopped when the recycle is completed. The tee ball valve is adjusted, and the oil sample is got from sampling point. The utility model has the advantages of simply structure, being easy to operate, solving the oil placement issue from the sampling valve and the sampling tube, saving the oil resource, and reducing the environmental pollution.

Description

The sampling valve group of petrol storage tank jar down-sampler

(1) technical field

The utility model belongs to the oil storage technical field, is specifically related to the oil product sampling setup on a kind of petrol storage tank.

(2) background technology

At present, the tank deck sampling is mainly adopted in the sampling of domestic various places petrol storage tank, and its shortcoming is: one, labor strength is big; Two, sampling process complexity, poor accuracy.For this reason, in the eighties, the domestic jar down-sampler developed, and use on some petrol storage tanks at home.In actual applications, mainly there is following problem in this jar of down-sampler: on, in, after following three sampling lines are drawn outside the jar, leading to the circulating pipe of circulation pump and leading on the sampling line of thief hatch has separately shutoff valve or gate valve to control respectively, when last, in, when the oil product in following three sample lines is replaced with pump circulation, each sampling valve to the oil product in one section very short pipeline of the house steward of circulating can not be replaced, like this when accessing oil sample with sampling bottle, the oil product without displacement in this pipe string is just headed in the sampling bottle by the oil sample that will adopt, makes institute's oil recovery sample can not requirement up to specification.In order to address this problem, usually half bottle of accessing earlier or one bottle of oil sample are thrown away in actual applications, connect one bottle again as the oil sample of taking, not only wasted resource and do like this, also increased insecurity, contaminated environment.Just because of this deficiency, bring adverse effect for the large scale application of jar down-sampler.

(3) summary of the invention

The purpose of this utility model provides a kind of sampling valve group of petrol storage tank jar down-sampler, it can thoroughly solve the replacement proble of oil product in sample lines and the sampling valve, thereby eliminated the drawback of petrol storage tank jar down-sampler, enabled to obtain promotion and application better.

The purpose of this utility model is achieved in that the sampling valve group of petrol storage tank jar down-sampler comprises sampling and on-cycle pipeline and valve, the utility model adopts a tee ball valve to replace dividing the control cock that is located on sampling line and the circulating pipe, as shared sampling valve and circulation valve, the inlet of tee ball valve links to each other with the sampling line of drawing in jar, an outlet feeds in the force pump of circulation usefulness, and another exports as thief hatch.During oil product in hand circulation pump displacement tank in the sampling line, oil product in the tee ball valve is also replaced simultaneously, when after displacement is finished tee ball valve being rotated to thief hatch, all be the oil product after the displacement in the whole pipeline, Direct Sampling just can satisfy sampling request fully.

The utility model is simple in structure, implements easily, has solved the problem of oil product displacement in sampling valve and the sample lines up hill and dale, has saved the oil product resource, has eliminated potential safety hazard, has reduced environmental pollution.

(4) description of drawings

Fig. 1 is the structural representation of internal floating roof tank jar down-sampler;

Fig. 2 is the utility model sampling operation box structure scheme drawing;

Fig. 3 is that the K of Fig. 2 is to structural representation.

(5) specific embodiment

Among Fig. 1, three sampling lines in upper, middle and lower 6,7,8 are fixed on sampling

line cramp bar

4 and 5, and hinge-coupled is used on the floating top 2 of upper support bar 4 upper ends and oil tank, and hinge-coupled is used with a jar end 3 in the lower end of lower support bar 5, also uses hinge-coupled up and down between the cramp bar; When floating jacking was fallen, cramp bar lifting thereupon up and down drove three also liftings thereupon of sampling line, because three sampling lines have specific installation site on support tube, therefore the inlet of three sampling lines is on the suitable sampling point all the time.Three sampling lines enter in the sampling operation case 10 outside jar is drawn in oil tank 1 bottom.

In Fig. 2.After upper, middle and lower three

sampling lines

6,7,8 are drawn in the jar, direct connection is on the inlet of three

triple valves

12,13,14, the upper outlet of

triple valve

12,13,14 links to each other with the inlet duct that leads to the

circulation force pump

18,19,20, and following outlet is

thief hatch

15,16,17.

Fig. 3 is the detailed presentations that the principle of work of a triple valve in the triple valve group is carried out, and other triple valve by that analogy.When need are taked the bottom oil sample, the circulating line 18 on top aimed at the opening in the spool 21 of tee ball valve 12 by the handle 22 of elder generation's swivel tee valve 12, with force pump 11 oil product in the pipeline is delivered in the storage tank through oil return pipe 9, termination of pumping after circulation is finished, the handle 22 of swivel tee valve 12, thief hatch 15 with the opening aligned with lower in the spool 21 of tee ball valve 12, at this moment the oil sample that flows out from thief hatch is exactly the oil sample that will adopt, after the sampling handle 22 is rotated to level attitude, the bottom oil sample is just adopted and is over.The method of taking middle part and top oil sample is with last identical.

Claims

A kind of sampling valve group of petrol storage tank jar down-sampler, it comprises sampling and on-cycle pipeline and valve, it is characterized in that: with a tee ball valve as shared sampling valve and circulation valve, the inlet of tee ball valve links to each other with the sampling line of drawing in jar, an outlet feeds in the force pump of circulation usefulness, and another exports as thief hatch.