CN103645301A - Crude oil fast evaluation automatic pretreatment system and method - Google Patents

Abstract

Provided are a crude oil fast evaluation automatic pretreatment system and method. The system comprises an electric heater, a temperature sensor, a pressure sensor, a controller and a control panel which are arranged on a crude oil evaluation device. The crude oil evaluation device comprises a sample pot used for placing crude oil to be tested and a near infrared analyzer. The electric heater and the temperature sensor are both arranged on the sample pot. The pressure sensor is arranged at the output terminal of the near infrared analyzer. The output terminals of the temperature sensor and the pressure sensor are both connected with a signal input terminal of the controller. The output terminal of the controller is connected with the control signal input terminals of the electric heater and each valve in the crude oil evaluation device. The controller and the control panel are connected bilaterally. The system can achieve automatic heating and flushing of the crude oil evaluation device, is suitable for various crude oil, and is safe and environmentally friendly, convenient and easy to use.

Description

A kind of crude oil make quick comments automatic pretreatment system and method

Technical field

The present invention relates to a kind of product of petrochemical industry class, especially the sample measurement automatic feeding system in petrochemical industry series products (being mainly crude oil) RES(rapid evaluation system), specifically a kind ofly carries out automatic pretreatment system and the method that Fast Evaluation provides adaptive measuring condition for different viscosities crude oil.

Background technology

At present, the automatic pretreatment system of crude oil is the important component part of crude oil RES(rapid evaluation system).Former wet goods petrochemical industry class oil plant nature difference is large, viscosity, pour point are different, when Fast Evaluation, for guaranteeing, meet sample introduction, cleaning requirement and stable measuring condition is provided, need to carry out pre-service to the crude oil sample detecting, it is measured under constant high-temperature and high-pressure conditions.Current Crude Pre adopts manual operations more, the preprocessing process parameter of different viscosities crude oil is changed greatly, be to rely on artificial method to heat and logical operation sample for a long time always, not only have a strong impact on measuring accuracy, labor intensity of operating staff is also very large.Also have that tube wall does not wash clean clearly, the easy cooling obstruction of heavy oil, solvent reveal the problems such as discharge and contaminated environment.

Summary of the invention

In the object of the invention is to detect for current oil plant because sample pretreating method falls behind, artificial judgment oil plant sliminess is subject to that experience affects, consistance is poor, device operation execution efficiency is low, oil plant detects the large problem of error, proposes a kind of crude oil make quick comments automatic pretreatment system and method.Native system has multiple crude oil, the safety and environmental protection of adaptation, facilitates easy-to-use feature.

Technical scheme of the present invention is:

A kind of crude oil automatic pretreatment system of making quick comments, it comprises the electric heater being arranged on crude oil evaluation device, temperature sensor, pressure transducer, controller and control panel, described crude oil evaluation device comprises that for placing sample pot and the near-infrared analyzer of crude oil to be tested and assessed be ABB analyser, described electric heater and temperature sensor are installed on sample pot, pressure transducer is arranged on the output terminal of near-infrared analyzer, described temperature sensor is all connected with the signal input part of controller with the output terminal of pressure transducer, the output of controller is connected with the control signal input end of each valve in electric heater and crude oil evaluation device, described controller is connected with control panel is two-way.

Crude oil evaluation device of the present invention also comprises the first purge tank, the second purge tank, solenoid valve EMV1, solenoid valve EMV2, solenoid valve EMV3, solenoid valve EMV4, electrical ball valve EBV1, electrical ball valve EBV2, waste liquid bottle and associated pipe, the first described purge tank is connected the output terminal of nitrogen source of the gas with the inlet end of the second purge tank, the output terminal of nitrogen source of the gas is the input end of connected electromagnetic valve EMV1 and solenoid valve EMV4 also, and the output terminal of the first purge tank and the second purge tank is connected with input end and the solenoid valve EMV2 input end of solenoid valve EMV3 respectively by pipeline; The output terminal of solenoid valve EMV3 and solenoid valve EMV2 is communicated with the input end of electrical ball valve EBV1, the output terminal of solenoid valve EMV1 connects the input end of electrical ball valve EBV1, the output terminal of electrical ball valve EBV1 is connected with the input end of sample pot by pipeline, the output terminal of solenoid valve EMV4 is connected with the input end of sample pot by pipeline, the output terminal of sample pot is connected with the input end of ABB analyser, the output terminal of ABB analyser is connected with the input end of waste liquid bottle, is connected in series electrical ball valve EBV2 between ABB analyser and waste liquid bottle.

The output terminal of nitrogen origin of the present invention connects a reduction valve.

Controller of the present invention is connected by RS485 bus with control panel, and controller is connected with electric heater, temperature sensor and pressure transducer by cable.

Controller of the present invention is single-chip microcomputer or PLC controller.

The crude oil automatic preprocess method of making quick comments, the application crude oil automatic pretreatment system of making quick comments, it comprises the following steps:

(A), sample measurement; System initialization, closes all valves; Crude oil sample to be tested and assessed is loaded into sample pot, sets the temperature of sample pot, sample pot is opened solenoid valve EMV4 after reaching design temperature, and adopts pressure sensor gathers the pressure p of ABB analyser output terminal ₁; Open electrical ball valve EBV2, crude oil sample enters ABB analyser and measures, and after 7 seconds, closes, and records the mean pressure of pressure transducer in this period , then, adopt the sample introduction duration t of fuzzy reasoning method acquisition crude oil, unit: second, t meets following formula:

$t=\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{\mathrm{\μ}}_T\left(T_i\right)\×T_i/\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{\mathrm{\μ}}_T\left(T_i\right)$

Wherein: i ∈ I, I represents fuzzy subset's number; T _ifor the eigenwert of i subordinate function in output sample injection time fuzzy subset T, μ _t(T _i) be T _idegree of membership;

Output sample injection time fuzzy subset T is calculated as follows:

In formula, P ₁,

and T is respectively pressure p ₁, mean pressure

and the fuzzy variable of crude oil sample injection time t, by the size of sampled data, be pressure p ₁, mean pressure

contrast degree of membership curve obtains its fuzzy variable different fuzzy subsets' degree of membership μ is provided with vector form after (x); L computing represents the matrix in bracket to be write as by row the form of I*J dimensional vector; R is for obtaining by off-line operation and be stored in the fuzzy relation matrix in controller before operation; * representing operation of direct product, ο represents compose operation;

Described P ₁, the definition of degree of membership curve and the computing method of R are as follows:

1) fuzzy variable P ₁,

and the degree of membership curve of T is as follows:

Definition pressure p ₁, mean pressure

and three fuzzy variable P of sample injection time t ₁,

and the fuzzy set of T is { minimum, less, medium, larger, greatly }, be designated as MS, BS, MM, BB, MB}, degree of membership curve is as shown in Figure 2;

The pressure p recording after opening for solenoid valve EMV4 ₁fuzzy variable P ₁, its degree of membership curvilinear correlation parameter is got a ₁=Pa1, a ₂=Pa2, b ₁=Pb1, b ₂=Pb2, b ₃=Pb3, c ₁=Pc1, c ₂=Pc2, c ₃=Pc3, d ₁=Pd1, d ₂=Pd2, d ₃=Pd3, e ₁=Pe1, e ₂=Pe2.

Definition p ₁domain X={Pa1, Pb2, Pc2, Pd2, Pe1},

P ₁the 5th fuzzy subset be respectively:

P ₁₁=MS _P1=[1,0,0,0,0]；P ₁₂=BS _P1=[0,1,0,0,0]；P ₁₃=MM _P1=[0,0,1,0,0]；P ₁₁=BB _P1=[0,0,0,1,0]；P ₁₅=MB _P1=[0,0,0,0,1]

For electrical ball valve EBV2, start to be opened to the mean pressure recording in preparation closing process

fuzzy variable

, its degree of membership curvilinear correlation parameter is got $a_1=\stackrel{\&OverBar;}{P}a1,$ $a_2=\stackrel{\&OverBar;}{P}a2,$ ${\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}}_1=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}1,$ ${\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">b</figure-callout>}}_2=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">b</figure-callout>}2,$ ${\mathrm{<figure-callout\; id="3"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}}_3=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}3,$ ${\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}}_1=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}1,$ ${\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">c</figure-callout>}}_2=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">c</figure-callout>}2,$ ${\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}}_3=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}3,$ ${\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}}_1=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}1,$ ${\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">d</figure-callout>}}_2=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">d</figure-callout>}2,$ ${\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}}_3=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}3,$ $e_1=\stackrel{\&OverBar;}{P}e1,$ $e_2=\stackrel{\&OverBar;}{P}e2.$

Definition

domain $Y=\{\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="a"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">a</figure-callout>}1,\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">b</figure-callout>}2,\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">c</figure-callout>}2,\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">d</figure-callout>}2,\stackrel{\&OverBar;}{P}e1\},$

the 5th fuzzy subset be respectively:

$\stackrel{\&OverBar;}{P_{21}}={\mathrm{<figure-callout\; id="2"\; label="MS\; P"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">MS</figure-callout>}}_{\stackrel{}{P_{}}}=\left[\mathrm{1,0,0,0,0}\right];$ $\stackrel{\&OverBar;}{P_{22}}={\mathrm{<figure-callout\; id="2"\; label="BS\; P"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">BS</figure-callout>}}_{\stackrel{}{P_{}}}=\left[\mathrm{0,1,0,0,0}\right];$ $\stackrel{\&OverBar;}{P_{23}}={\mathrm{<figure-callout\; id="2"\; label="MM\; P"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">MM</figure-callout>}}_{\stackrel{}{P_{}}}=\left[\mathrm{0,0,1,0,0}\right];$ $\stackrel{\&OverBar;}{P_{24}}={\mathrm{<figure-callout\; id="2"\; label="BB\; P"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">BB</figure-callout>}}_{\stackrel{}{P_{}}}=\left[\mathrm{0,0,0,1,0}\right];$ $\stackrel{\&OverBar;}{P_{25}}={\mathrm{<figure-callout\; id="2"\; label="MB\; P"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">MB</figure-callout>}}_{\stackrel{}{P_{}}}=\left[\mathrm{0,0,0,0,1}\right]$

For the fuzzy variable T of different classes of oil plant sample injection time t, its degree of membership curvilinear correlation parameter is got $a_1=\stackrel{\&OverBar;}{P}a1,$ $a_2=\stackrel{\&OverBar;}{P}a2,$ ${\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}}_1=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}1,$ ${\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">b</figure-callout>}}_2=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">b</figure-callout>}2,$ ${\mathrm{<figure-callout\; id="3"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}}_3=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="b"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">b</figure-callout>}3,$ ${\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}}_1=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}1,$ ${\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">c</figure-callout>}}_2=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">c</figure-callout>}2,$ ${\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}}_3=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}3,$ ${\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}}_1=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}1,$ ${\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">d</figure-callout>}}_2=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">d</figure-callout>}2,$ ${\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}}_3=\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}3,$ $e_1=\stackrel{\&OverBar;}{P}e1,$ $e_2=\stackrel{\&OverBar;}{P}e2.$

The domain Z={Ta1 of definition t, Tb2, Tc2, Td2, Te1},

The 5th of t the fuzzy subset is respectively:

MS _T=[1,0,0,0,0]；BS _T=[0,1,0,0,0]；MM _T=[0,0,1,0,0]；BB _T=[0,0,0,1,0]；MB _T=[0,0,0,0,1]

2) sample introduction duration fuzzy inference rule storehouse

The various situations that operator is run in operating process and corresponding identification result gather as follows,

Fuzzy inference rule form is:

$\mathrm{if}{P}_{1i}\mathrm{and}\stackrel{\&OverBar;}{P_{2j}}\mathrm{then}{T}_{\mathrm{ij}}$ i∈I,j∈J （1）

Corresponding fuzzy relation is

p _1i,

and T _ijfor fuzzy variable P ₁,

and certain concrete fuzzy subset of T, the capable j column position of i in table 1;

In formula (1): I, J is subscript collection, represents respectively fuzzy variable fuzzy subset's number; Each input can be quantified as 5 fuzzy subsets, has 25 rules and just can all cover domain, and the corresponding fuzzy relation of each rule, obtains total fuzzy rule base;

R=R ₁₁∪R ₁₂∪……∪R ₅₅ （2）

3) fuzzy reasoning

According to input fuzzy subset P _1i,

and the fuzzy subset T of output _ij, by fuzzy inference rule, complete fuzzy reasoning and solve fuzzy relation, and under designing in design fuzzy reasoning device and solidifying.

By formula (1), can draw total fuzzy relationship matrix r,

In formula: P _1i,

and T _ijfor having the fuzzy subset of relation shown in formula (1), L computing represents the matrix in bracket to be write as by row the form of I*J dimensional vector;

Again open electrical ball valve EBV2, t closes after second, utilizes ABB analyser to measure, and repeats abovementioned steps, circulates four times; Shut electromagnetic valve EMV4, adopts pressure sensor gathers the pressure p of ABB analyser output terminal ₁, when pressure drops to 0bar, sample test process finishes, and closes all valves.

The crude oil automatic preprocess method of making quick comments, the application crude oil automatic pretreatment system of making quick comments, comprises the cleaning step of system, it comprises toluene cleaning process:

(A), after sample test process finishes, all valves are all in closed condition, in the first purge tank, add toluene, open electrical ball valve EBV2, electrical ball valve EBV1 and solenoid valve EMV2, when waste liquid bottle input port flows to liquid, close electrical ball valve EBV2, solenoid valve EMV2, make system soak duration 60 * t;

(B), open electrical ball valve EBV2, solenoid valve EMV1, keeps after 5 seconds first shut electromagnetic valve EMV1, the pressure p of adopts pressure sensor collection ABB analyser output terminal ₁, when pressure is reduced to 0bar, close electrical ball valve EBV2; Clean and finish for the first time, repeat abovementioned steps, wash cycles four times.

Cleaning step of the present invention also comprises acetone cleaning process:

(A), after sample test process finishes, all valves are all in closed condition, in the second purge tank, add acetone, open electrical ball valve EBV2, electrical ball valve EBV1 and solenoid valve EMV2, when waste liquid bottle input port flows to liquid, close electrical ball valve EBV2, solenoid valve EMV2, make system soak duration 60 * t;

(B), open electrical ball valve EBV2, solenoid valve EMV1, keeps after 5 seconds first shut electromagnetic valve EMV1, the pressure p of adopts pressure sensor collection ABB analyser output terminal ₁, when pressure is reduced to 0bar, close electrical ball valve EBV2; Clean and finish for the first time, repeat abovementioned steps, wash cycles four times.

Method of the present invention also comprises the purge step of sample pot: before purge step, all valves, all in closed condition, are first opened solenoid valve EMV4, then open electrical ball valve EBV2, purges priority after 5-10 minute and closes electrical ball valve EBV2 and solenoid valve EMV4.

A kind of crude oil automatic preprocess method of making quick comments, the application crude oil automatic pretreatment system of making quick comments, the method comprises the purge step of sample pot: before purge step, all valves are all in closed condition, first open solenoid valve EMV4, open again electrical ball valve EBV2, purge priority after 5-10 minute and close electrical ball valve EBV2 and solenoid valve EMV4.

Beneficial effect of the present invention:

The system that the present invention plants can realize Automatic-heating, the flushing of crude oil evaluation device, has multiple crude oil, the safety and environmental protection of adaptation, facilitates easy-to-use feature.

The present invention has realized the automatic pre-service of crude oil prompt commentary, has realized detection, cleaning and temperature controlled robotization.Can accurately the temperature of sample be controlled to the temperature value of setting.The problems such as sample temperature fluctuation is large in Heat artificially sample, the difficult assurance of sample temperature, measuring process have been avoided.Solved existing oil plant detect in temperature control inaccurately, pipeline-cleaning trouble while repeatedly measuring, the problem that workload is large, have simple in structure, easy to operate, control temperature is accurate, is conducive to reduce working strength and the cost that oil plant detects, and is conducive to improve the precision that oil plant detects.

The present invention can be widely used in petroleum chemical industry, the place that need carry out oil plant detection for refinery, research institute etc.

The present invention can be widely used in the pre-service to various dissimilar crude oil, comprises white oil, ultralight oil, lightweight oil, middle matter oil, mink cell focus and super viscous crude.To dissimilar crude oil, according to its current mobility feature, provide the pretreatment mode of various crude oil and sample introduction, cleaning condition, meet the pre-service demand of various crude oil.

The mobility of automatic Identification different crude oils of the present invention, selects suitable cleaning condition and cleaning way automatically, and sample pot and pipeline are cleaned automatically.At utmost reduce crude oil and chemical reagent to health and environmental impact.

The present invention is based on that Industry Control level programmable controller measuring accuracy is high, precise control, antijamming capability are strong, fast response time.

The present invention can realize the measurement of crude oil under confined space, steady temperature.Not only guarantee the consistance of condition determination and the homogeneity of sample, and effectively avoid the light constituent volatilization of crude oil, improve the repeatability, the repeatability precision that detect.

The present invention shows on off state and the data such as temperature, pressure of valve in real time by guidance panel, adopt succinct, lively Crude Pre technological process to realize integrated automatic operation.User interface is directly perceived, friendly, easy and simple to handle, quick.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

In figure: 1, controller; 2, control panel; 3, reduction valve; 4, the first purge tank; 5, the second purge tank; 6, solenoid valve EMV3; 7, solenoid valve EMV2; 8, solenoid valve EMV1; 9, electrical ball valve EBV1; 10, solenoid valve EMV4; 11, sample pot; 12, near-infrared analyzer; 13, electrical ball valve EBV2; 14, waste liquid bottle; 15, electric heater; 16, temperature sensor; 17, pressure transducer.

Fig. 2 is the degree of membership curve of fuzzy variable.

Embodiment

Below in conjunction with drawings and Examples, the present invention is further illustrated.

As shown in Figure 1, a kind of crude oil automatic pretreatment system of making quick comments, it comprises the electric heater 15 being arranged on crude oil evaluation device, temperature sensor 16, pressure transducer 17, controller 1 and control panel 2, described crude oil evaluation device comprises for placing sample pot 11 and the near-infrared analyzer 12 of crude oil to be tested and assessed, described electric heater 15 and temperature sensor 16 are installed on sample pot 11, pressure transducer 17 is arranged on the output terminal of near-infrared analyzer 12, described temperature sensor 16 is all connected with the signal input part of controller 1 with the output terminal of pressure transducer 17, the output of controller 1 is connected with the control signal input end of each valve in electric heater 15 and crude oil evaluation device, described controller 1 is connected with control panel 2 is two-way.

Crude oil evaluation device of the present invention also comprises the first purge tank 4, the second purge tank 5, solenoid valve EMV1, solenoid valve EMV2, solenoid valve EMV3, solenoid valve EMV4, electrical ball valve EBV1, electrical ball valve EBV2, waste liquid bottle 14 and associated pipe, the first described purge tank 4 is connected the output terminal of nitrogen source of the gas with the inlet end of the second purge tank 5, the output terminal of nitrogen source of the gas is the input end of connected electromagnetic valve EMV1 and solenoid valve EMV4 also, the output terminal of the first purge tank 4 and the second purge tank 5 is connected with input end and the solenoid valve EMV2 input end of solenoid valve EMV3 respectively by pipeline, the output terminal of solenoid valve EMV3 and solenoid valve EMV2 is communicated with the input end of electrical ball valve EBV1, the output terminal of solenoid valve EMV1 connects the input end of electrical ball valve EBV1, the output terminal of electrical ball valve EBV1 is connected with the input end of sample pot 11 by pipeline, the output terminal of solenoid valve EMV4 is connected with the input end of sample pot 11 by pipeline, the output terminal of sample pot 11 is connected with the input end of ABB analyser 12, the output terminal of ABB analyser 12 is connected with the input end of waste liquid bottle 14, between ABB analyser 12 and waste liquid bottle 14, is connected in series electrical ball valve EBV2.

During concrete enforcement:

Reduction valve 3, solenoid valve EBV4, sample pot 11, near-infrared analyzer are that ABB analyser 12, electrical ball valve EBV2, waste liquid bottle 14 and associated pipe connect and compose sample measurement loop in turn.

Reduction valve 3, the first purge tank 4 or the second purge tank 5, solenoid valve EMV3 or solenoid valve EMV2, electrical ball valve EBV1, sample pot 11, near-infrared analyzer are that ABB analyser 12, electrical ball valve EBV2, waste liquid bottle 14 and associated pipe connect and compose sample scavenger circuit in turn.

Reduction valve 3, solenoid valve EMV1, electrical ball valve EBV1, sample pot 11, near-infrared analyzer are that ABB analyser 12, electrical ball valve EBV2, waste liquid bottle 14 and associated pipe connect and compose gas purging loop in turn.

In sample measurement loop, fuzzy reasoning process is exemplified below:

Get fuzzy variable P ₁,

and one group of degree of membership curvilinear correlation parameter of T:

Pa1=0.1，Pa2=0.3，Pb1=0.2，Pb2=0.8，Pb3=1.4，Pc1=1，Pc2=2.6，Pc3=4.2，Pd1=4，Pd2=7.3，Pd3=10.6，Pe1=10，Pe2=10.8；

$\stackrel{\&OverBar;}{P}a1=1.8,$ $\stackrel{\&OverBar;}{P}a2=2.2,$ $\stackrel{\&OverBar;}{P}b1=2,$ $\stackrel{\&OverBar;}{P}b2=4.4,$ $\stackrel{\&OverBar;}{P}b3=6.8,$ $\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}1=6,$ $\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">c</figure-callout>}2=8.5,$ $\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">c</figure-callout>}3=11,$ $\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}1=10,$ $\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="DEST\_PATH\_140108170156.png"\; state="\{\{state\}\}">d</figure-callout>}2=13,$ $\stackrel{\&OverBar;}{P}\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="DEST\_PATH\_140108170156.png,DEST\_PATH\_140108170159.png"\; state="\{\{state\}\}">d</figure-callout>}3=16,$ $\stackrel{\&OverBar;}{P}e1=14,$ $\stackrel{\&OverBar;}{P}e2=17;$

Ta1=2，Ta2=3.4，Tb1=3，Tb2=4，Tb3=5，Tc1=4.6，Tc2=6，Tc3=7，Td1=6.6，Td2=8，Td3=9.4，Te1=9，Te2=10。

According to aforementioned fuzzy variable P ₁,

and fuzzy subset's numerical value and the fuzzy inference rule of T, according to formula (3), adopt in advance offline mode to calculate fuzzy relationship matrix r,

And be stored in controller (1) calculating the fuzzy relation matrix obtaining, then for crude oil prompt commentary pretreatment system reasoning identification.

If in certain oil sample identification, record

P ₁=7.3bar,

during bar, according to both membership function curve and correlation parameter, known P ₁for the degree of membership of " BB " is 1, vector form is designated as [0 100 0];

just in time, between " BS " and " MS ", vector form is designated as [0 00 0.3 0.3].

According to formula (4)

According to formula (5)

$t=\underset{i=1}{\overset{I}{\mathrm{\&Sigma;}}}{\mathrm{\&mu;}}_T\left(T_i\right)\&times;T_i/\underset{i=1}{\overset{I}{\mathrm{\&Sigma;}}}{\mathrm{\&mu;}}_T\left(T_i\right)$

$=(0.3\&times;8+0.3\&times;10)/(0.3+0.3)=9---\left(s\right)$

Visible, adopt fuzzy reasoning can effectively process if above-mentioned mean pressure is between the input parameter of collections such as (" less " " minimum ") between " BS " and " MS " reasoning identification problem during overlapping region in fuzzy subset.

The crude oil automatic preprocess method of making quick comments, the application crude oil automatic pretreatment system of making quick comments, it comprises the cleaning step of system, it comprises toluene cleaning process:

(A), after sample test process finishes, all valves are all in closed condition, in the first purge tank (4), add toluene, open electrical ball valve EBV2(13), electrical ball valve EBV1(9) and solenoid valve EMV2(7), when waste liquid bottle input port flows to liquid, close electrical ball valve EBV2(13), solenoid valve EMV2(7), make system soak duration 60 * t;

(B), open electrical ball valve EBV2(13), solenoid valve EMV1(8), keeps after 5 seconds first shut electromagnetic valve EMV1(8), the pressure p of adopts pressure sensor (17) collection ABB analyser (12) output terminal ₁, when pressure is reduced to 0bar, close electrical ball valve EBV2(13); Clean and finish for the first time, repeat abovementioned steps, wash cycles four times.

This method cleaning step also comprises acetone cleaning process:

(A), after sample test process finishes, all valves are all in closed condition, in the second purge tank (5), add acetone, open electrical ball valve EBV2(13), electrical ball valve EBV1(9) and solenoid valve EMV2(7), when waste liquid bottle input port flows to liquid, close electrical ball valve EBV2(13), solenoid valve EMV2(7), make system soak duration 60 * t;

(B), open electrical ball valve EBV2(13), solenoid valve EMV1(8), keeps after 5 seconds first shut electromagnetic valve EMV1(8), the pressure p of adopts pressure sensor (17) collection ABB analyser (12) output terminal ₁, when pressure is reduced to 0bar, close electrical ball valve EBV2(13); Clean and finish for the first time, repeat abovementioned steps, wash cycles four times.

This method comprises the purge step of sample pot (11): before purge step, all valves, all in closed condition, are first opened solenoid valve EMV4, then open electrical ball valve EBV2, purges priority after 5-10 minute and closes electrical ball valve EBV2 and solenoid valve EMV4.

Claims (10)

1. a crude oil automatic pretreatment system of making quick comments, it is characterized in that it comprises the electric heater (15) being arranged on crude oil evaluation device, temperature sensor (16), pressure transducer (17), controller (1) and control panel (2), described crude oil evaluation device comprises that sample pot (11) and the near-infrared analyzer for placing crude oil to be tested and assessed is ABB analyser (12), described electric heater (15) and temperature sensor (16) are installed on sample pot (11), pressure transducer (17) is arranged on the output terminal of near-infrared analyzer (12), the output terminal of described temperature sensor (16) and pressure transducer (17) is all connected with the signal input part of controller (1), the output of controller (1) is connected with the control signal input end of each valve in electric heater (15) and crude oil evaluation device, described controller (1) and two-way connection of control panel (2).

2. the crude oil according to claim 1 automatic pretreatment system of making quick comments, it is characterized in that described crude oil evaluation device also comprises the first purge tank (4), the second purge tank (5), solenoid valve EMV1(8), solenoid valve EMV2(7), solenoid valve EMV3(6), solenoid valve EMV4(10), electrical ball valve EBV1(9), electrical ball valve EBV2(13), waste liquid bottle (14) and associated pipe, described the first purge tank (4) is connected the output terminal of nitrogen source of the gas with the inlet end of the second purge tank (5), the output terminal of nitrogen source of the gas is connected electromagnetic valve EMV1(8 also) and solenoid valve EMV4(10) input end, the output terminal of the first purge tank (4) and the second purge tank (5) by pipeline respectively with solenoid valve EMV3(6) input end and solenoid valve EMV2(7) input end is connected, solenoid valve EMV3(6) and solenoid valve EMV2(7) output terminal and electrical ball valve EBV1(9) input end be communicated with, solenoid valve EMV1(8) input end output terminal connection electrical ball valve EBV1(9), electrical ball valve EBV1(9) output terminal is connected with the input end of sample pot (11) by pipeline, solenoid valve EMV4(10) output terminal is connected with the input end of sample pot (11) by pipeline, the output terminal of sample pot (11) is connected with the input end of ABB analyser (12), the output terminal of ABB analyser (12) is connected with the input end of waste liquid bottle (14), between ABB analyser (12) and waste liquid bottle (14), be connected in series electrical ball valve EBV2(13).

3. the crude oil according to claim 2 automatic pretreatment system of making quick comments, is characterized in that the output terminal of described nitrogen origin connects a reduction valve (3).

4. the crude oil according to claim 1 automatic pretreatment system of making quick comments, it is characterized in that described controller (1) is connected by RS485 bus with control panel (2), controller (1) is connected with electric heater (15), temperature sensor (16) and pressure transducer (17) by cable.

5. the crude oil according to claim 1 automatic pretreatment system of making quick comments, is characterized in that described controller (1) is single-chip microcomputer or PLC controller.

6. the crude oil automatic preprocess method of making quick comments, application rights requires the described crude oil of one of 1-5 automatic pretreatment system of making quick comments, and it is characterized in that it comprises the following steps:

(A), sample measurement; System initialization, closes all valves; Crude oil sample to be tested and assessed is loaded into sample pot (11), sets the temperature of sample pot (11), sample pot (11) is opened solenoid valve EMV4(10 after reaching design temperature), adopts pressure sensor (17) gathers the pressure p of ABB analyser (12) output terminal ₁; Open electrical ball valve EBV2(13), crude oil sample enters ABB analyser (12) and measures, and after 7 seconds, closes, and records the mean pressure of pressure transducer in this period (17) then, adopt the sample introduction duration t of fuzzy reasoning method acquisition crude oil, unit: second, t meets following formula:

Wherein: i ∈ I, I represents fuzzy subset's number; T _ifor the eigenwert of i subordinate function in output sample injection time fuzzy subset T, μ _t(T _i) be T _idegree of membership;

Output sample injection time fuzzy subset T is calculated as follows:

In formula, P ₁,

and T is respectively pressure p ₁, mean pressure and the fuzzy variable of crude oil sample injection time t, by the size of sampled data, be pressure p ₁, mean pressure contrast degree of membership curve obtains its fuzzy variable different fuzzy subsets' degree of membership μ is provided with vector form after (x); L computing represents the matrix in bracket to be write as by row the form of I*J dimensional vector; R is for obtaining by off-line operation and be stored in the fuzzy relation matrix in controller (1) before operation; * representing operation of direct product, o represents compose operation;

Described P ₁,

the definition of degree of membership curve and the computing method of R are as follows:

1) fuzzy variable P ₁,

and the degree of membership curve of T is as follows:

Definition pressure p ₁, mean pressure

and three fuzzy variable P of sample injection time t ₁, and the fuzzy set of T is { minimum, less, medium, larger, greatly }, be designated as MS, BS, MM, BB, MB}, degree of membership curve is as shown in Figure 2;

The pressure p recording after opening for solenoid valve EMV4 ₁fuzzy variable P ₁, its degree of membership curvilinear correlation parameter is got a ₁=Pa1, a ₂=Pa2, b ₁=Pb1, b ₂=Pb2, b ₃=Pb3, c ₁=Pc1, c ₂=Pc2, c ₃=Pc3, d ₁=Pd1, d ₂=Pd2, d ₃=Pd3, e ₁=Pe1, e ₂=Pe2.

Definition p ₁domain X={Pa1, Pb2, Pc2, Pd2, Pe1},

P ₁the 5th fuzzy subset be respectively:

P ₁₁=MS _P1=[1,0,0,0,0]；P ₁₂=BS _P1=[0,1,0,0,0]；P ₁₃=MM _P1=[0,0,1,0,0]；P ₁₁=BB _P1=[0,0,0,1,0]；P ₁₅=MB _P1=[0,0,0,0,1]

For electrical ball valve EBV2, start to be opened to the mean pressure recording in preparation closing process

fuzzy variable

its degree of membership curvilinear correlation parameter is got

Definition

domain

the 5th fuzzy subset be respectively:

For the fuzzy variable T of different classes of oil plant sample injection time t, its degree of membership curvilinear correlation parameter is got

The domain Z={Ta1 of definition t, Tb2, Tc2, Td2, Te1},

The 5th of t the fuzzy subset is respectively:

MS _T=[1,0,0,0,0]；BS _T=[0,1,0,0,0]；MM _T=[0,0,1,0,0]；BB _T=[0,0,0,1,0]；MB _T=[0,0,0,0,1]

2) sample introduction duration fuzzy inference rule storehouse

The various situations that operator is run in operating process and corresponding identification result gather as follows,

Fuzzy inference rule form is:

Corresponding fuzzy relation is

p _1i,

and T _ijfor fuzzy variable P ₁,

and certain concrete fuzzy subset of T, the capable j column position of i in table 1;

In formula (1): I, J is subscript collection, represents respectively fuzzy variable fuzzy subset's number; Each input can be quantified as 5 fuzzy subsets, has 25 rules and just can all cover domain, and the corresponding fuzzy relation of each rule, obtains total fuzzy rule base;

R=R ₁₁∪R ₁₂∪……∪R ₅₅ （2）

3) fuzzy reasoning

According to input fuzzy subset P _1i,

and the fuzzy subset T of output _ij, by fuzzy inference rule, complete fuzzy reasoning and solve fuzzy relation, and under designing in design fuzzy reasoning device and solidifying.

By formula (1), can draw total fuzzy relationship matrix r,

In formula: P _1i, and T _ijfor having the fuzzy subset of relation shown in formula (1), L computing represents

matrix in bracket is write as the form of I*J dimensional vector by row;

Again open electrical ball valve EBV2(13), t closes after second, utilizes ABB analyser to measure, and repeats abovementioned steps, circulates four times; Shut electromagnetic valve EMV4(10), adopts pressure sensor (17) gathers the pressure p of ABB analyser (12) output terminal ₁, when pressure drops to 0bar, sample test process finishes, and closes all valves.

7. the crude oil automatic preprocess method of making quick comments, application rights requires the described crude oil of one of 1-5 automatic pretreatment system of making quick comments, and it is characterized in that the method comprises the cleaning step of system, and it comprises toluene cleaning process:

(A), after sample test process finishes, all valves are all in closed condition, in the first purge tank (4), add toluene, open electrical ball valve EBV2(13), electrical ball valve EBV1(9) and solenoid valve EMV2(7), when waste liquid bottle input port flows to liquid, close electrical ball valve EBV2(13), solenoid valve EMV2(7), make system soak duration 60 * t;

(B), open electrical ball valve EBV2(13), solenoid valve EMV1(8), keeps after 5 seconds first shut electromagnetic valve EMV1(8), the pressure p of adopts pressure sensor (17) collection ABB analyser (12) output terminal ₁, when pressure is reduced to 0bar, close electrical ball valve EBV2(13); Clean and finish for the first time, repeat abovementioned steps, wash cycles four times.

8. the crude oil according to claim 7 automatic preprocess method of making quick comments, is characterized in that cleaning step also comprises acetone cleaning process:

(A), after sample test process finishes, all valves are all in closed condition, in the second purge tank (5), add acetone, open electrical ball valve EBV2(13), electrical ball valve EBV1(9) and solenoid valve EMV2(7), when waste liquid bottle input port flows to liquid, close electrical ball valve EBV2(13), solenoid valve EMV2(7), make system soak duration 60 * t;

(B), open electrical ball valve EBV2(13), solenoid valve EMV1(8), keeps after 5 seconds first shut electromagnetic valve EMV1(8), the pressure p of adopts pressure sensor (17) collection ABB analyser (12) output terminal ₁, when pressure is reduced to 0bar, close electrical ball valve EBV2(13); Clean and finish for the first time, repeat abovementioned steps, wash cycles four times.

9. the crude oil according to claim 7 automatic preprocess method of making quick comments, it is characterized in that the method also comprises the purge step of sample pot (11): before purge step, all valves are all in closed condition, first open solenoid valve EMV4, open again electrical ball valve EBV2, purge priority after 5-10 minute and close electrical ball valve EBV2 and solenoid valve EMV4.

10. a crude oil automatic preprocess method of making quick comments, application rights requires the described crude oil of one of 1-5 automatic pretreatment system of making quick comments, it is characterized in that the method comprises the purge step of sample pot (11): before purge step, all valves are all in closed condition, first open solenoid valve EMV4, open again electrical ball valve EBV2, purge priority after 5-10 minute and close electrical ball valve EBV2 and solenoid valve EMV4.

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