CN102778338A - Method for measuring leakage of fractionating column through pressure meter - Google Patents
Method for measuring leakage of fractionating column through pressure meter Download PDFInfo
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- CN102778338A CN102778338A CN2012102615571A CN201210261557A CN102778338A CN 102778338 A CN102778338 A CN 102778338A CN 2012102615571 A CN2012102615571 A CN 2012102615571A CN 201210261557 A CN201210261557 A CN 201210261557A CN 102778338 A CN102778338 A CN 102778338A
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- liquid level
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- tower
- fractionator
- fractionating column
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Abstract
The invention discloses a method for measuring leakage of a fractionating column through a pressure meter and belongs to the technical field of leakage of the fractionating column. By means of the method, the problem that specific conditions of the leakage during operation of the fractionating column cannot be judged and system operation is influenced accordingly is solved. The method includes the following steps: measuring pressure P4 at the bottom of the fractionating column, pressure P2 of actual liquid surface at the bottom of the column and pressure P1 at the top of the fractionating column through the pressure meter; calculating the liquid level pressure difference L1 at the bottom of the fractionating column under normal liquid level circumference; calculating the liquid level pressure difference L2 at the bottom of the column in actual operation; and comparing the liquid level pressure difference L1 at the bottom of the column under the normal liquid level circumference and the liquid level pressure difference L2 at the bottom of the column in actual operation to judge the leakage circumference. The method is suitable for judging the leakage condition of the fractionating column.
Description
Technical field
The present invention relates to a kind of method of utilizing the manometry fractionator to leak, belong to the field of measuring technique that fractionator leaks.
Background technology
In service at fractionator is run into owing to leak and cause the problem that liquid level is inaccurate or fluctuation is bigger through regular meeting, owing to can't judge the concrete condition of leakage, has a strong impact on the steady production of system.
Summary of the invention
The present invention is in order to solve the in service owing to the concrete condition that can not judge leakage of fractionator, to influence the problem of system's operation, a kind of method of utilizing the manometry fractionator to leak being provided.
The method of utilizing the manometry fractionator to leak according to the invention, it may further comprise the steps:
Step 1: the pressure P 2 and the tower top pressure P1 of actual liquid level at the bottom of the pressure P 4 at the bottom of the employing manometry fractionation Tata, the tower;
Step 2: calculate and obtain the liquid level pressure reduction L1 at the bottom of the tower under the normal level of liquid situation:
L1=P4-P3; P3 is the pressure of normal level of liquid at the bottom of the tower in the formula;
Step 3: calculate and obtain the liquid level pressure reduction L2 at the bottom of the tower in the actual motion:
L2=（P4-P1）-Δp，
Wherein: Δ p=P2-P1,
Then: L2=P4-P1-P2+P1=P4-P2;
Step 4: the liquid level pressure reduction L2 at the bottom of the tower in liquid level pressure reduction L1 at the bottom of the tower under the normal level of liquid situation and the actual motion is compared, and when L1=L2, fractionator does not have leakage;
< during L2, fractionator negative pressure pipe leaks as L1;
As L1>during L2, the fractionator forward voltage diode leaks.
Advantage of the present invention is: the present invention obtains in the fractionator pressure condition everywhere through manometric measurement; Can detect and obtain the concrete condition whether fractionator leaks; Under the less situation of leakage rate; Can avoid out-of-service inspection to cause damage through proofreading and correct liquid level, can guarantee the normal operation of system.
Description of drawings
Fig. 1 is a principle schematic of the present invention.
Embodiment
Embodiment one: below in conjunction with Fig. 1 this embodiment is described, the said method of utilizing the manometry fractionator to leak of this embodiment, it may further comprise the steps:
Step 1: the pressure P 2 and the tower top pressure P1 of actual liquid level at the bottom of the pressure P 4 at the bottom of the employing manometry fractionation Tata, the tower;
Step 2: calculate and obtain the liquid level pressure reduction L1 at the bottom of the tower under the normal level of liquid situation:
L1=P4-P3; P3 is the pressure of normal level of liquid at the bottom of the tower in the formula;
Step 3: calculate and obtain the liquid level pressure reduction L2 at the bottom of the tower in the actual motion:
L2=（P4-P1）-Δp，
Wherein: Δ p=P2-P1,
Then: L2=P4-P1-P2+P1=P4-P2;
Step 4: the liquid level pressure reduction L2 at the bottom of the tower in liquid level pressure reduction L1 at the bottom of the tower under the normal level of liquid situation and the actual motion is compared, and when L1=L2, fractionator does not have leakage;
< during L2, fractionator negative pressure pipe leaks as L1;
As L1>during L2, the fractionator forward voltage diode leaks.
P3 is a constant in this embodiment, can calculate according to the height value of theoretical liquid level to obtain.
This embodiment through under the normal condition with actual motion in liquid level pressure reduction compare, can judge the practical operation situation of fractionator, when forward voltage diode leaked, liquid level was on the low side or fluctuation increase; When the negative pressure pipe leaked, liquid level was higher.It can also further calculate the leakage rate under the leakage situation according to the actual conditions of pressure.
Claims (1)
1. method of utilizing the manometry fractionator to leak, it is characterized in that: it may further comprise the steps:
Step 1: the pressure P 2 and the tower top pressure P1 of actual liquid level at the bottom of the pressure P 4 at the bottom of the employing manometry fractionation Tata, the tower;
Step 2: calculate and obtain the liquid level pressure reduction L1 at the bottom of the tower under the normal level of liquid situation:
L1=P4-P3; P3 is the pressure of normal level of liquid at the bottom of the tower in the formula;
Step 3: calculate and obtain the liquid level pressure reduction L2 at the bottom of the tower in the actual motion:
L2=（P4-P1）-Δp，
Wherein: Δ p=P2-P1,
Then: L2=P4-P1-P2+P1=P4-P2;
Step 4: the liquid level pressure reduction L2 at the bottom of the tower in liquid level pressure reduction L1 at the bottom of the tower under the normal level of liquid situation and the actual motion is compared, and when L1=L2, fractionator does not have leakage;
< during L2, fractionator negative pressure pipe leaks as L1;
As L1>during L2, the fractionator forward voltage diode leaks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102615571A CN102778338A (en) | 2012-07-26 | 2012-07-26 | Method for measuring leakage of fractionating column through pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102615571A CN102778338A (en) | 2012-07-26 | 2012-07-26 | Method for measuring leakage of fractionating column through pressure meter |
Publications (1)
| Publication Number | Publication Date |
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| CN102778338A true CN102778338A (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102615571A Pending CN102778338A (en) | 2012-07-26 | 2012-07-26 | Method for measuring leakage of fractionating column through pressure meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483135A (en) * | 2014-12-03 | 2015-04-01 | 中国人民解放军国防科学技术大学 | Faulty line isolation method for liquid propellant rocket engines |
Citations (6)
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|---|---|---|---|---|
| DE3427768A1 (en) * | 1984-07-27 | 1986-01-30 | Fa. Karl-Friedrich Simsheuser, 5489 Insul | Leak testing apparatus for gas and compressed air plants |
| CN2087337U (en) * | 1991-01-17 | 1991-10-23 | 中国科学院合肥智能机械研究所高技术开发公司 | Micro-leakage measuring instrument |
| CN1152122A (en) * | 1995-07-20 | 1997-06-18 | 丰田自动车株式会社 | Method of testing pressure relief |
| CN1499183A (en) * | 2002-11-11 | 2004-05-26 | Smc株式会社 | Calculation method for leakage flow of leakage tester |
| CN1869626A (en) * | 2005-05-27 | 2006-11-29 | 宁波宝新不锈钢有限公司 | Measuring method for leakage of hydraulic system and its application |
| CN101349608A (en) * | 2008-09-17 | 2009-01-21 | 王德全 | Method and apparatus for detecting pressure vessel air tightness |
-
2012
- 2012-07-26 CN CN2012102615571A patent/CN102778338A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3427768A1 (en) * | 1984-07-27 | 1986-01-30 | Fa. Karl-Friedrich Simsheuser, 5489 Insul | Leak testing apparatus for gas and compressed air plants |
| CN2087337U (en) * | 1991-01-17 | 1991-10-23 | 中国科学院合肥智能机械研究所高技术开发公司 | Micro-leakage measuring instrument |
| CN1152122A (en) * | 1995-07-20 | 1997-06-18 | 丰田自动车株式会社 | Method of testing pressure relief |
| CN1499183A (en) * | 2002-11-11 | 2004-05-26 | Smc株式会社 | Calculation method for leakage flow of leakage tester |
| CN1869626A (en) * | 2005-05-27 | 2006-11-29 | 宁波宝新不锈钢有限公司 | Measuring method for leakage of hydraulic system and its application |
| CN101349608A (en) * | 2008-09-17 | 2009-01-21 | 王德全 | Method and apparatus for detecting pressure vessel air tightness |
Non-Patent Citations (2)
| Title |
|---|
| 邵宪太等: "差压泄漏检测仪的研究与设计", 《液压与气动》, no. 04, 30 April 2006 (2006-04-30), pages 25 - 27 * |
| 郭绍真: "分馏塔压力及塔顶控制", 《炼油化工自动化》, no. 4, 31 August 1991 (1991-08-31), pages 19 - 22 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483135A (en) * | 2014-12-03 | 2015-04-01 | 中国人民解放军国防科学技术大学 | Faulty line isolation method for liquid propellant rocket engines |
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Application publication date: 20121114 |