CN1186952A - Detecting technology for steam and dry air ratio - Google Patents
Detecting technology for steam and dry air ratio Download PDFInfo
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- CN1186952A CN1186952A CN 96119721 CN96119721A CN1186952A CN 1186952 A CN1186952 A CN 1186952A CN 96119721 CN96119721 CN 96119721 CN 96119721 A CN96119721 A CN 96119721A CN 1186952 A CN1186952 A CN 1186952A
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- steam
- dry air
- air ratio
- detecting device
- gas
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Abstract
The technology is composed of detector installed in the detecting box and intelligent secondary instrument. The advantages are capable of directly measuring the ratio value of steam and dry air independent to technological process, small lag, good property of repetition, low cost and convenient to form the control system.
Description
The present invention relates to a kind of by microcomputer form can continuous coverage kinds of processes flow process in the system of ratio of steam and all the other dry gas.
The ratio of steam and butt gas is the important technical parameter of most of industrial processs.Need measure the ratio of steam and dry gas in the pipeline to obtain corresponding calorific value as the urban coal gasification; The gas making workshop section of chemical fertilizer factory need measure the ratio of steam in institute's producing coal gas to judge steam decomposition rate; The synthesis ammonia plant conversion section need be measured the ratio of steam and all the other dry gas to satisfy technological requirements such as protection catalyst and steady production.
Condensation method can be used for the measurement of steam and dry air ratio generally speaking; Shang Weijian is suitable for the apparatus measures method of generalized case.Condensation method is because the long error affected by environment of Measuring Time is bigger.The method of measuring steam and dry air ratio at specific production run is arranged,, can only measure the parameter of specific flow process ad-hoc location, need measure steam and dry air ratio great majority as patent 89108654 and patent 92110757.Occasion can't be used.
The objective of the invention is at above-mentioned the deficiencies in the prior art, propose the measuring technique of steam and dry air ratio in the general production run.Making it can not rely on specific commercial production flow process measures in the multiple industrial processes, as the urban coal gasification continuously; The ratio of steam and butt gas in the industrial processes such as the coal gas producing of chemical fertilizer factory is measured the needs of steam and dry air ratio to satisfy various industrial flows.
For humidity sensor, its output is by the dividing potential drop and the gas temperature decision of water vapour.That is:
G
Out=f (PH
2O, T) ... (1) have:
PH
2O=g (G
Out, T) ... (2) steam and butt gas (volume) ratio:
The way that realizes task of the present invention is: the detecting device of industrial processes gas to be measured being introduced the scene of being placed in detects parameters input microsystem via reduction valve (5) gas purifier (6) flowrate control valve (7) and flowmeter (4) by temperature sensor (1), humidity sensor (2) and pressure transducer (3) and adopts following formula to calculate steam and dry air ratio.The present invention adopts the data acquisition of microcomputer, handle and digital-to-analogue, prior aries such as analog to digital conversion are finished automatic continuous coverage to steam and dry air ratio in conjunction with system and method for the present invention, can be used for existing various industrial flow MEASUREMENT OF STEAM air ratio, the present invention owing to employing gas to be measured is drawn some steam of direct measurement and dry air ratio improves the response speed of measuring system.The present invention is fit to form the vapor-air ratio control system especially.
The course of work of intelligent steam and dry air ratio analyzer is described below in conjunction with embodiment.This instrument is made up of detecting device and secondary instrument.Gas to be measured is reduced pressure by reduction valve (5), remove oxious component by gas purifier (6), flowrate control valve (7) and flowmeter (4) control enter the detecting device that is equipped with sensor and detect parameter T, G by temperature sensor (1), humidity sensor (2) and pressure transducer (3)
OUT, the Ps transmission cable is sent to intelligent secondary instrument with the signal of each sensor.Intelligence secondary instrument theory diagram as shown in Figure 1, complete machine is by signal conditioning circuit, data acquisition module/number conversion circuit, microsystem, display circuit, power supply etc. are partly formed.The signal that each sensor comes is through signal conditioning circuit (9) A/D circuit (10), enter microsystem (11) and carry out filtering, conversion gets vapor-air ratio through calculated with mathematical model, its digital quantity form is shown that by LED charactron (12) its analog quantity form is via D/A and change-over circuit output.Detecting device can not adorned pressure unit (3) and be replaced by fixed value in intelligent secondary instrument when pressure stability; Pressure unit when constant voltage (3) reduction valve (5) flowrate control valve (7) and flowmeter (4) can not adorned.There is a way switch amount when temperature is too high, to close sensing chamber with the protection sensor.
Accompanying drawing 1: secondary instrument theory diagram accompanying drawing 2: instrument face plate figure accompanying drawing 3: detecting device block diagram
Claims (3)
1, a kind ofly comprises demonstration, A/D, D/A conversion communication interface and signal conditioning circuit by microcomputer system, the measuring system of the ratio of steam and all the other butt gas in the automatic measurement chemical process flow that detecting device is formed.It is characterized in that comprising in the detecting device humidity sensor (2), temperature sensor (1).
2,, it is characterized in that comprising in the detecting device pressure transducer (3) by the described system of claim 1.
3,, it is characterized in that comprising in the detecting device flowrate control valve (7) and flowmeter (4) by the described system of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96119721 CN1186952A (en) | 1996-12-31 | 1996-12-31 | Detecting technology for steam and dry air ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96119721 CN1186952A (en) | 1996-12-31 | 1996-12-31 | Detecting technology for steam and dry air ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1186952A true CN1186952A (en) | 1998-07-08 |
Family
ID=5125952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96119721 Pending CN1186952A (en) | 1996-12-31 | 1996-12-31 | Detecting technology for steam and dry air ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1186952A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401772A (en) * | 2010-09-17 | 2012-04-04 | 袁志军 | Humidity method for measuring ratio of water vapor to dry gas |
| CN104483450A (en) * | 2014-12-11 | 2015-04-01 | 湖北华辕科技有限公司 | System for determining steam-gas ratio of inlets of all shift converters at conversion section of tandem type synthesis ammonia plant |
| CN104897871A (en) * | 2014-03-05 | 2015-09-09 | 航天长征化学工程股份有限公司 | Water/gas ratio measurement system in transformation unit |
| CN109580711B (en) * | 2018-12-17 | 2021-06-01 | 江苏海事职业技术学院 | Soft measurement method for gas calorific value under condition of blast furnace gas and converter gas co-combustion |
-
1996
- 1996-12-31 CN CN 96119721 patent/CN1186952A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401772A (en) * | 2010-09-17 | 2012-04-04 | 袁志军 | Humidity method for measuring ratio of water vapor to dry gas |
| CN104897871A (en) * | 2014-03-05 | 2015-09-09 | 航天长征化学工程股份有限公司 | Water/gas ratio measurement system in transformation unit |
| CN104897871B (en) * | 2014-03-05 | 2018-01-05 | 航天长征化学工程股份有限公司 | Aqueous vapor ratio measuring system in converter unit |
| CN104483450A (en) * | 2014-12-11 | 2015-04-01 | 湖北华辕科技有限公司 | System for determining steam-gas ratio of inlets of all shift converters at conversion section of tandem type synthesis ammonia plant |
| CN109580711B (en) * | 2018-12-17 | 2021-06-01 | 江苏海事职业技术学院 | Soft measurement method for gas calorific value under condition of blast furnace gas and converter gas co-combustion |
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