CN203299626U - Intelligent combined-type hydrogen-adding automatic matching device - Google Patents
Intelligent combined-type hydrogen-adding automatic matching device Download PDFInfo
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- CN203299626U CN203299626U CN2013203213725U CN201320321372U CN203299626U CN 203299626 U CN203299626 U CN 203299626U CN 2013203213725 U CN2013203213725 U CN 2013203213725U CN 201320321372 U CN201320321372 U CN 201320321372U CN 203299626 U CN203299626 U CN 203299626U
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- nitrogen
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- automatic matching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model provides an intelligent combined-type hydrogen-adding automatic matching device, and belongs to the technical field of a device control system which is added with hydrogen in nitrogen to deoxidize and improve pure nitrogen. The device comprises a programmable controller main module, and a first analog input module, a second analog input module, and a third analog input module connected with the programmable controller main module. The programmable controller main module is connected with an upper computer, a touch screen, a memory cell, an operation panel, and a nitrogen hydrogenization deoxidization purifying device. The intelligent combined-type hydrogen-adding automatic matching device uses a new technology and a new method. The device integrates a feed-forward control technology and a feed-backward control technology, and some new control ideas and intelligent control programs are added. The device is reasonable in design and good in controllability.
Description
Technical field
The utility model belongs to the nitrogen deoxidization by adding hydrogen and improves purity nitrogen apparatus control system technical field, is specifically related to the box-like hydrogenation gas of a kind of smart group automatic matching device.
Background technology
At present, on air separation plant market, electric control system ability and the manufacturing process of nitrogen deoxidization by adding hydrogen High Purity Nitrogen device processed are poor, analysis specific as follows:
(1) old technology uses single valve to regulate manually hydrogenation, adds amounts of hydrogen and is not easy to control, and causes precision not high, waste source of the gas, electric power energy consumption, and production efficiency is low.
(2) use traffic variable valve hydrogenation is controlled technique (be called for short " rear feed " and control technique), the advantage of this system: be that hydrogen divides instrument always in the monitoring state to rear class nitrogen parameter, can reflect in real time the product nitrogen gas index, and simple and clear.
" rear feed " controls the technique shortcoming: be hydrogen analyzer at first with signal feedback in prime, and then drive control valve and adjust the hydrogenation amount, when actual hydrogen content changed, the hydrogen analyzer response needed the regular hour, reacts slower, has hysteresis phenomenon.In addition, be limited at present valve control accuracy level both at home and abroad, residual hydrogen content is difficult to be controlled in very little scope.Usually, if use inlet flow rate variable valve (as: U.S. ASCO), residual hydrogen content can be controlled in 1000 * 10
-6In; And when using domestic variable valve (as: contain forever in Fuyang), residual hydrogen content only can be controlled in 5000 * 10
-6In.Finally, less (less than 2m in the hydrogenation amount
3In/h) situation, be difficult to realize fine adjustment.
(3) service property (quality) flow controller hydrogenation is controlled technique (be called for short " feedforward " and control technique), the advantage of native system: be nitrogen pressure and stability of flow,, so the hydrogenation amount is also more stable, easily control; Due to the nitrogen parameter has been carried out Real Time Monitoring, the hydrogenation amount also can be regulated thereupon in real time, responds very fast; Control accuracy is higher comparatively speaking, and while using domestic oxygen analyzer, flowmeter, mass flow controller (as: D07 of Beijing Sevenstar-HC series), residual hydrogen content can be controlled in 800 * 10
-6In, and when using import oxygen analyzer, flowmeter, mass flow controller (as Rosemount), residual hydrogen content can be controlled in (300
~500) * 10
-6In.
The shortcoming that " feedforward " controls technique is: uncontrollable to rear class High Purity Nitrogen parameter, also can't feed back the prime hydrogenation system.In addition, if the general nitrogen supply of prime is not normal, as the situation that prime nitrogen index descends rapidly, mass flow controller also increases rapidly aperture thereupon, the instantaneous increase of hydrogenation amount, and hydrogen and oxygen vigorous reaction in degasifier, may burn out oxygen-eliminating device.So during feedback system, the nitrogen gas generating system of suggestion front is furnished with defective nitrogen automatic evacuation function, with the safe operation of protection system before use.
(4) can not, according to user's needs, determine to control on off state and the relevant warning of each stage valve
(the too low warning of hydrogen purity, the too low warning of Hydrogen Vapor Pressure, the too high warning of oxygen purity, the warning of finished product nitrogen outlet hypotony, the too high warning of finished product nitrogen dew point, the warning of nitrogen deoxidization by adding hydrogen purification devices excess Temperature etc.); Can not accurately control the nitrogen and hydrogen mixture temperature, cause wasting the electric power energy consumption, the well heater lost of life, service efficiency reduce; Can not provide online demonstration (hydrogen analyser purity, general nitrogen outlet flow, trace oxygen analyzer purity, nitrogen deoxidization by adding hydrogen purification devices temperature, finished product nitrogen outlet pressure, finished product nitrogen outlet dew point, finished product nitrogen outlet flow and hydrogen outlet pressure etc.), online modification technical parameter (as hydrogen analyser purity higher limit, hydrogen analyser purity lower limit; General nitrogen outlet flow higher limit, general nitrogen outlet flux lower limit value; Trace oxygen analyzer purity higher limit, trace oxygen analyzer purity lower limit; Nitrogen deoxidization by adding hydrogen purification devices temperature upper limit, nitrogen deoxidization by adding hydrogen purification devices lowest temperature value; Finished product nitrogen outlet upper pressure limit value, finished product nitrogen outlet low pressure limit value; Finished product nitrogen outlet dew point higher limit, finished product nitrogen outlet dew point lower limit; Finished product nitrogen outlet flow higher limit, finished product nitrogen outlet flux lower limit value; Hydrogen outlet upper pressure limit value, hydrogen outlet low pressure limit value etc.) and provide and keep for the users specification signal to be used as the DCS system.
The utility model content
For the problem that prior art exists, the purpose of this utility model is to design the technical scheme that the box-like hydrogenation gas of a kind of smart group automatic matching device is provided.
The box-like hydrogenation gas of described smart group automatic matching device, it is characterized in that comprising programmable controller primary module and the first analog input module, the second analog input module, the 3rd analog output module that are connected with the programmable controller primary module, be connected with host computer, touch-screen, storage unit, guidance panel and nitrogen deoxidization by adding hydrogen purification devices on described programmable controller primary module.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that described programmable controller primary module connects host computer by RS485 communication interface PORT0 communication.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that described programmable controller primary module connects touch-screen and storage unit by RS485 communication interface PORT1 communication.
The box-like hydrogenation gas of described smart group automatic matching device, it is characterized in that described programmable controller primary module by built-in reception load module attended operation panel, described programmable controller primary module connects nitrogen deoxidization by adding hydrogen purification devices by built-in transmission output module.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that on described the first analog input module being connected with hydrogen analyser detecting unit, general nitrogen outlet flow detection unit, trace oxygen analyzer detecting unit and nitrogen deoxidization by adding hydrogen purification devices temperature detecting unit.
The box-like hydrogenation gas of described smart group automatic matching device, it is characterized in that on described the second analog input module being connected with finished product nitrogen outlet pressure sensing cell, finished product nitrogen outlet dew point detecting unit, finished product nitrogen outlet flow detection unit and hydrogen outlet pressure sensing cell, described hydrogen outlet pressure sensing cell connects hydrogen pipeline.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that on described the 3rd analog output module being connected with mass rate adjusting apparatus detecting unit, described mass rate adjusting apparatus detecting unit quality of connection flow controller.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that described general nitrogen outlet flow detection unit connects nitrogen pipeline, is provided with self-supporting regulation valve between described nitrogen pipeline and general nitrogen outlet flow detection unit.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that described general nitrogen outlet flow detection unit connects the trace oxygen analyzer detecting unit, and described trace oxygen analyzer detecting unit connects nitrogen deoxidization by adding hydrogen purification devices.
The box-like hydrogenation gas of described smart group automatic matching device, is characterized in that described hydrogen pipeline quality of connection flow controller, the nitrogen deoxidization by adding hydrogen purification devices that described mass flow controller connects.
The box-like hydrogenation gas of above-mentioned smart group automatic matching device, adopt new technology, new method, be about to " feedforward " and control technique and " rear feed " and control the technique combination and add control theory, the intelligent control program that some are new, this scheme is reasonable in design, controllability is strong etc., and concrete advantage shows:
(1) realize automatically regulating and adding amounts of hydrogen, easy to control, controllable precision is high, rationally saves source of the gas, electric power energy, enhance productivity.
(2) " rear feed " controlled technological advantage and be that hydrogen divides instrument always in the monitoring state to rear class nitrogen parameter, can reflect in real time the product nitrogen gas index, and be simple and clear.
(3) " feedforward " control technological advantage is nitrogen pressure and stability of flow,, so the hydrogenation amount is also more stable, easily controls; Due to the nitrogen parameter has been carried out Real Time Monitoring, the hydrogenation amount also can be regulated thereupon in real time, responds very fast; Control accuracy is namely high comparatively speaking, with the safe operation of protection system.
(4) combined type is controlled technique and has been absorbed " feedforward " and control technique and " rear feed " and control the advantage of technique, also has itself advantage to be to monitor simultaneously the oxygen content of entrance nitrogen simultaneously and exports excessive hydrogen content in purity nitrogen.Calculate the hydrogenation amount by oxygen content, flowmeter, then by rear class hydrogen, divide instrument to feed back, excessive hydrogen content can be controlled at a lower scope, oxygen content is less than 5 * 10 in guaranteeing purity nitrogen
-6Situation under, excessive hydrogen content can be controlled in 200 * 10
-6Below.
(5) the box-like hydrogenation gas of smart group automatic matching device has adopted the refreshed color touch screen in advanced the Kunlun and Siemens PLC integrated control system, has antidetonation, shock resistance, anti-interference function; Also have monitoring of tools, contact, management, correction, output, fault alarm, long-rangely open/stop the multiple functions such as opertaing device, have many menu display functions.The duty of the box-like hydrogenation gas of PLC man-machine interface digital monitoring smart group automatic matching device; Also can, according to user's needs, determine to control on off state and the relevant warning (the too low warning of hydrogen purity, the too low warning of Hydrogen Vapor Pressure, the too high warning of oxygen purity, the warning of finished product nitrogen outlet hypotony, the too high warning of finished product nitrogen dew point, the warning of nitrogen deoxidization by adding hydrogen purification devices excess Temperature etc.) of each stage valve; Can accurately control the nitrogen and hydrogen mixture temperature, the conservation of power energy consumption, improve well heater serviceable life, gas producing efficiency; Can provide online demonstration (hydrogen analyser purity, general nitrogen outlet flow, trace oxygen analyzer purity, nitrogen deoxidization by adding hydrogen purification devices temperature, finished product nitrogen outlet pressure, finished product nitrogen outlet dew point, finished product nitrogen outlet flow and hydrogen outlet pressure etc.), online modification technical parameter (as hydrogen analyser purity higher limit, hydrogen analyser purity lower limit; General nitrogen outlet flow higher limit, general nitrogen outlet flux lower limit value; Trace oxygen analyzer purity higher limit, trace oxygen analyzer purity lower limit; Nitrogen deoxidization by adding hydrogen purification devices temperature upper limit, nitrogen deoxidization by adding hydrogen purification devices lowest temperature value; Finished product nitrogen outlet upper pressure limit value, finished product nitrogen outlet low pressure limit value; Finished product nitrogen outlet dew point higher limit, finished product nitrogen outlet dew point lower limit; Finished product nitrogen outlet flow higher limit, finished product nitrogen outlet flux lower limit value; Hydrogen outlet upper pressure limit value, hydrogen outlet low pressure limit value etc.) and above data are authorized a change, by programming, historical record is had access to, checked to above data; The PLC controller is reserved with the RS485 communication interface, adopts Modbus communication protocol and provides and keep for the users specification signal to be used as the DCS system.Can long-range or directly control the box-like hydrogenation gas of smart group automatic matching device by host computer, guidance panel, simple to operate; Can store historical data by storage unit, be convenient to analyze.The box-like hydrogenation gas of smart group automatic matching device is designed to automatic detection, demonstration and closed-loop control system, comprises the operation of system and emptying, really accomplishes Full automatic unmanned.
Description of drawings
Fig. 1 is control principle drawing of the present utility model.
In figure: 1-programmable controller primary module; 2-the first analog input module; 3-the second analog input module; 4-the 3rd analog output module; The 5-host computer; The 6-touch-screen; The 7-storage unit; The 8-guidance panel; 9-nitrogen deoxidization by adding hydrogen purification devices; 10-hydrogen analyser detecting unit; The general nitrogen outlet flow detection unit of 11-; 12-trace oxygen analyzer detecting unit; 13-nitrogen deoxidization by adding hydrogen purification devices temperature detecting unit; 14-finished product nitrogen outlet pressure sensing cell; 15-finished product nitrogen outlet dew point detecting unit; 16-finished product nitrogen outlet flow detection unit; 17-hydrogen outlet pressure sensing cell; 18-mass rate adjusting apparatus detecting unit; The 19-mass flow controller; The 20-hydrogen pipeline; The 21-self-supporting regulation valve; The 22-nitrogen pipeline.
Embodiment
Further illustrate the utility model below in conjunction with Figure of description.
As shown in the figure, the box-like hydrogenation gas of smart group automatic matching device comprises programmable controller primary module 1 and the first analog input module 2, the second analog input module 3 and the 3rd analog output module 4 that are connected data line and are connected with programmable controller primary module 1.
Programmable controller primary module 1(adopts SIEMENS CPU224XP CN, have 14 input/10 outputs totally 24 digital quantity I/O points, 1 RS485 communication/programming port, have the PPI communications protocol, MPI communications protocol and free way ability to communicate) on be connected with host computer 5, touch-screen 6, storage unit 7, guidance panel 8 and nitrogen deoxidization by adding hydrogen purification devices 9.The concrete connected mode of programmable controller primary module 1 is as follows: programmable controller primary module 1 connects host computer 5 by RS485 communication interface PORT0 communication, connect touch-screen 6 and storage unit 7 by RS485 communication interface PORT1 communication,, by built-in reception load module attended operation panel 8, by built-in transmission output module, connect nitrogen deoxidization by adding hydrogen purification devices 9.
Programmable controller primary module 1 is sent to host computer 5 with the status signal of nitrogen deoxidization by adding hydrogen purification devices 9, alerting signal, on-line monitoring signal, alarm history data etc., and programmable controller primary module 1 receives remote interlocking control high purity nitrogen signal, anxious nitrogen deoxidization by adding hydrogen purification devices signal and the online modification technical parameter of stopping that host computer 5 sends simultaneously.Touch-screen 6 can show the open and close state of duty, accumulated running time, workflow and the valve of nitrogen deoxidization by adding hydrogen purification devices 9; can be by button startup-shutdown, parameter setting above touch-screen 6, check system failure information etc.; can also be by USB flash disk support download and refresh routine, conveniently to data analysis and arrangement.Storage unit 7 has historgraphic data recording and memory function, and historical data can be printed by touch-screen 6 joint control printers.Nitrogen deoxidization by adding hydrogen purification devices 9 is used for high purity nitrogen.
Be connected with hydrogen analyser detecting unit 10, general nitrogen outlet flow detection unit 11, trace oxygen analyzer detecting unit 12 and nitrogen deoxidization by adding hydrogen purification devices temperature detecting unit 13 on the first analog input module 2.The first analog input module 2 gathers respectively and monitors oxygen content and the nitrogen deoxidization by adding hydrogen purification devices temperature of the excessive hydrogen content of outlet in purity nitrogen, general nitrogen outlet flow, entrance nitrogen, and sends programmable controller primary module 1 to and carry out computational analysis.Calculate the hydrogenation amount by oxygen content, general nitrogen outlet flowmeter, then by the rear class hydrogen analyzer, fed back, excessive hydrogen content can be controlled at a lower scope, oxygen content is less than 5 * 10 in guaranteeing purity nitrogen
-6Situation under, excessive hydrogen content can be controlled in 200 * 10
-6Below.
General nitrogen outlet flow detection unit 11 connects nitrogen pipeline 22, is provided with self-supporting regulation valve 21 between nitrogen pipeline 22 and general nitrogen outlet flow detection unit 11, and self-supporting regulation valve 21 plays steady pressure.General nitrogen outlet flow detection unit 11 also connects trace oxygen analyzer detecting unit 12, and trace oxygen analyzer detecting unit 12 connects nitrogen deoxidization by adding hydrogen purification devices 9.
Be connected with finished product nitrogen outlet pressure sensing cell 14, finished product nitrogen outlet dew point detecting unit 15, finished product nitrogen outlet flow detection unit 16 and hydrogen outlet pressure sensing cell 17 on the second analog input module 3, the hydrogen pipeline 20 that connects of hydrogen outlet pressure sensing cell 17 wherein, hydrogen pipeline 20 quality of connection flow controllers 19.The second analog input module 3 gathers respectively and monitors finished product nitrogen outlet pressure, finished product nitrogen outlet dew point, finished product nitrogen outlet flow and hydrogen outlet pressure, and sends programmable controller primary module 1 to and carry out computational analysis; Connect touch-screen 6, storage unit 7 and output signal by RS485 communication interface PORT1 communication; Also by RS485 communication interface PORT0 communication, connect host computer 5, adopt Modbus communication protocol and provide and keep for the users specification signal to be used as the DCS system.
Be connected with mass rate adjusting apparatus detecting unit 18 on the 3rd analog output module 4, the mass flow controller 19 that mass rate adjusting apparatus detecting unit 18 connects, mass flow controller 19 connects nitrogen deoxidization by adding hydrogen purification devices 9.
During work, the oxygen content signal of general nitrogen outlet flow detection unit 11 output signals, trace oxygen analyzer detecting unit 12 and the hydrogen richness signal of hydrogen analyser detecting unit 10 are uploaded to analog input module 2, calculate oxygen flow in entrance nitrogen through programmable controller primary module 1, then can calculate the amount that needs hydrogenation.The 3rd analog output module 4, be converted to 4 with this value
~The 20mA current signal, export to mass rate adjusting apparatus detecting unit 18, controls the size of mass flow controller 19 apertures by mass rate adjusting apparatus detecting unit 18, regulates the hydrogenation amount.Exit to nitrogen in the hydrogen richness of hydrogen analyser detecting unit 10 detect, and as feedback signal, hydrogen richness and settings are made real-time comparison, when hydrogen content surpasses or lower than setting range, is, through the 1 inner PID computing of programmable controller primary module, output current signal is done corresponding the adjustment, and the hydrogenation amount is adjusted, this is closed-loop control system.
Shown in the above and figure is only preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. the box-like hydrogenation gas of smart group automatic matching device, it is characterized in that comprising programmable controller primary module (1) and the first analog input module (2), the second analog input module (3), the 3rd analog output module (4) that are connected with programmable controller primary module (1), be connected with host computer (5), touch-screen (6), storage unit (7), guidance panel (8) and nitrogen deoxidization by adding hydrogen purification devices (9) on described programmable controller primary module (1).
2. the box-like hydrogenation gas of smart group as claimed in claim 1 automatic matching device, is characterized in that described programmable controller primary module (1) connects host computer (5) by RS485 communication interface PORT0 communication.
3. the box-like hydrogenation gas of smart group as claimed in claim 1 automatic matching device, is characterized in that described programmable controller primary module (1) connects touch-screen (6) and storage unit (7) by RS485 communication interface PORT1 communication.
4. the box-like hydrogenation gas of smart group as claimed in claim 1 automatic matching device, it is characterized in that described programmable controller primary module (1) by built-in reception load module attended operation panel (8), described programmable controller primary module (1) connects nitrogen deoxidization by adding hydrogen purification devices (9) by built-in transmission output module.
5. the box-like hydrogenation gas of smart group as claimed in claim 1 automatic matching device, is characterized in that being connected with hydrogen analyser detecting unit (10), general nitrogen outlet flow detection unit (11), trace oxygen analyzer detecting unit (12) and nitrogen deoxidization by adding hydrogen purification devices temperature detecting unit (13) on described the first analog input module (2).
6. the box-like hydrogenation gas of smart group as claimed in claim 1 automatic matching device, it is characterized in that being connected with finished product nitrogen outlet pressure sensing cell (14), finished product nitrogen outlet dew point detecting unit (15), finished product nitrogen outlet flow detection unit (16) and hydrogen outlet pressure sensing cell (17) on described the second analog input module (3), described hydrogen outlet pressure sensing cell (17) connects hydrogen pipeline (20).
7. the box-like hydrogenation gas of smart group as claimed in claim 1 automatic matching device, it is characterized in that on described the 3rd analog output module (4) being connected with mass rate adjusting apparatus detecting unit (18), described mass rate adjusting apparatus detecting unit (18) quality of connection flow controller (19).
8. the box-like hydrogenation gas of smart group as claimed in claim 5 automatic matching device, it is characterized in that described general nitrogen outlet flow detection unit (11) connects nitrogen pipeline (22), is provided with self-supporting regulation valve (21) between described nitrogen pipeline (22) and general nitrogen outlet flow detection unit (11).
9. the box-like hydrogenation gas of smart group as claimed in claim 5 automatic matching device, it is characterized in that described general nitrogen outlet flow detection unit (11) connects trace oxygen analyzer detecting unit (12), described trace oxygen analyzer detecting unit (12) connects nitrogen deoxidization by adding hydrogen purification devices (9).
10. the box-like hydrogenation gas of smart group as claimed in claim 6 automatic matching device, it is characterized in that described hydrogen pipeline (20) quality of connection flow controller (19), the nitrogen deoxidization by adding hydrogen purification devices (9) that described mass flow controller (19) connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203213725U CN203299626U (en) | 2013-06-05 | 2013-06-05 | Intelligent combined-type hydrogen-adding automatic matching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203213725U CN203299626U (en) | 2013-06-05 | 2013-06-05 | Intelligent combined-type hydrogen-adding automatic matching device |
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| CN203299626U true CN203299626U (en) | 2013-11-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980260A (en) * | 2017-05-22 | 2017-07-25 | 辽宁沃德玛克工业设备制造有限公司 | One kind hydrogenation purification system closed loop Automatic-hydrogenation control system and control method |
| CN107543425A (en) * | 2017-07-07 | 2018-01-05 | 无锡斯贝尔磁性材料有限公司 | A kind of furnace atmosphere Auto-Test System |
-
2013
- 2013-06-05 CN CN2013203213725U patent/CN203299626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980260A (en) * | 2017-05-22 | 2017-07-25 | 辽宁沃德玛克工业设备制造有限公司 | One kind hydrogenation purification system closed loop Automatic-hydrogenation control system and control method |
| CN107543425A (en) * | 2017-07-07 | 2018-01-05 | 无锡斯贝尔磁性材料有限公司 | A kind of furnace atmosphere Auto-Test System |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20160605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |