CN203256295U - Self-adapted regulation control system of oxygen blowing pressure of converter - Google Patents
Self-adapted regulation control system of oxygen blowing pressure of converter Download PDFInfo
- Publication number
- CN203256295U CN203256295U CN 201320151769 CN201320151769U CN203256295U CN 203256295 U CN203256295 U CN 203256295U CN 201320151769 CN201320151769 CN 201320151769 CN 201320151769 U CN201320151769 U CN 201320151769U CN 203256295 U CN203256295 U CN 203256295U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- valve
- pressure
- pressure transmitter
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a self-adapted regulation control system of oxygen blowing pressure of a converter. The system comprises a converter blowing PLC (Programmable Logic Controller) system and an oxygen pressure adjusting valve controlled by the PLC control system, an oxygen flow adjusting valve, a first oxygen pressure transmitter, a second oxygen pressure transmitter, a flow pore plate, an oxygen differential pressure transmitter, an oxygen inlet cutting-off valve and an oxygen outlet cutting-off valve, wherein one end of the first oxygen pressure transmitter is connected with an oxygen pipe net and the other end of the first oxygen pressure transmitter is connected with one end of the oxygen inlet cutting-off valve; the other end of the oxygen inlet cutting-off valve is connected with the oxygen pressure adjusting valve; the oxygen pressure adjusting valve is connected with the flow pore plate through the second oxygen pressure transmitter; the flow pore plate is connected with an oxygen gun through a pipeline; the pipeline is provided with the oxygen flow adjusting valve and the oxygen outlet cutting-off valve. According to the self-adapted regulation control system disclosed by the utility model, different pressure adjusting valves are automatically arranged according to different oxygen pressures to initially pre-set the opening degree, so as to guarantee that the flows of oxygen from the adjusting valves are basically the same when the oxygen is opened in each time.
Description
Technical field
The utility model refers to a kind of Converter Oxigen Blowing pressure adaptive regulation and control system especially about the Controlling System of bessemerizing in a kind of metallurgy industry steel-making converter technique.
Background technology
Converter Oxigen Blowing generally coordinates the chain control of oxygen lance lifting, when the oxygen rifle drops to out the oxygen point height, automatically open the oxygen cutting valve, and oxygen regulating valve is reached an aperture that presets, oxygen from the external oxygen tracheae is filled with the oxygen rifle, and the nozzle by the oxygen rifle is sprayed onto in converter.Reach PLC(Programmable logic Controller when instantaneous oxygen flow being detected, programmable logic controller) when the systemic presupposition definite value, again oxygen regulating valve is transferred to PID(Proportion Integration Differentiation, proportion integration differentiation) automatically control.There is a defective in this control method: namely the pressure for the oxygen pipe network requires more stable, in the time of the pressure surge of oxygen pipe network, at the blowing initial stage, because the oxygen pressure variable valve is first to reach an initial aperture that fixedly presets, the cymomotive force (CMF) of oxygen ductwork pressure must cause the fluctuation of starting stage oxygen flow.For traditional Wet Dust-trapping of Converter technique, in the first few minutes converting process, by the reaction of the carbon in oxygen and molten steel, the coal gas of generation is all directly to drain by diffusing chimney, and wet dedusting does not have electric precipitator, there is not potential safety hazard, so adopt this method no problem; But for the converter dry dedusting, owing to being provided with electric precipitator, all diffuse, recovery channel is all in the electric precipitator back, this CO that just means that oxygen and carbon reaction produce at any time can pass through electric precipitator, if CO concentration has surpassed the limits of explosion of electric precipitator, will form venting of dust explosion.And if at the blowing initial stage, the instantaneous delivery of oxygen is controlled badly, cause big ups and downs, will make that in stove, CO concentration sharply rises suddenly, thereby cause the urgent venting of dust explosion of electric precipitator.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of and automatically adjusts according to different oxygen pressures the Converter Oxigen Blowing pressure adaptive regulation and control system that oxygen regulating valve initially presets aperture.
For achieving the above object, the utility model provides a kind of Converter Oxigen Blowing pressure adaptive regulation and control system, and it includes oxygen pressure variable valve, oxygen flow rate adjusting valve, the first oxygen pressure transmitter, the second oxygen pressure transmitter, fow-through orifice, oxygen differential pressure transmitter, oxygen intake trip valve and the oxygen outlet trip valve of bessemerizing the PLC Controlling System and being controlled by this PLC Controlling System; This first oxygen pressure transmitter one end connects the oxygen pipe network; The other end connects an end of oxygen intake trip valve; The other end of this oxygen intake trip valve connects the oxygen pressure variable valve; This oxygen pressure variable valve is by the second oxygen pressure transmitter connection traffic plate hole; This flow plate hole connects the oxygen rifle by pipeline; This pipeline is provided with described oxygen flow rate adjusting valve and oxygen outlet trip valve; This oxygen outlet trip valve is positioned at the end near the oxygen rifle; This oxygen differential pressure transmitter connects this fow-through orifice and controls the perforate size of this fow-through orifice; This first oxygen pressure transmitter and this second oxygen pressure transmitter are located at respectively before and after this oxygen pressure variable valve and inlet pressure and top hole pressure are detected.
Described oxygen flow rate adjusting valve includes the first oxygen flow rate adjusting valve and the second oxygen flow rate adjusting valve, described oxygen outlet trip valve includes the first oxygen outlet trip valve and the second oxygen outlet trip valve, pipeline between described fow-through orifice and oxygen rifle is two-way, this fow-through orifice is connected an oxygen rifle by the first oxygen flow rate adjusting valve on a pipeline wherein with the first oxygen outlet trip valve, this flow plate hole is connected another oxygen rifle by the second oxygen flow rate adjusting valve on another pipeline with the second oxygen outlet trip valve, and two oxygen rifles carry out oxygen blast to converter in turn.
Utilize Converter Oxigen Blowing pressure adaptive regulation and control system of the present utility model, can initially preset aperture by the oxygen pressure variable valve different according to different oxygen pressure Lookup protocols, when guaranteeing to open oxygen at every turn, although oxygen pressure may be different, but basically identical from variable valve oxygen flow out, thereby solved satisfactorily at the oxygen blast initial stage the unreasonable electric precipitator venting of dust explosion problem that causes of initial flow that causes due to the oxygen pressure difference.
Description of drawings
Fig. 1 is the structure principle chart of the utility model Converter Oxigen Blowing pressure adaptive regulation and control system.
Embodiment
For ease of structure of the present utility model and method and effect thereof are had further understanding, the existing preferred embodiment that develops simultaneously by reference to the accompanying drawings is described in detail as follows.
As shown in Figure 1, Converter Oxigen Blowing pressure adaptive regulation and control system of the present utility model includes and bessemerizes PLC Controlling System (not shown) and the oxygen pressure variable valve 1 of being controlled by this PLC Controlling System, oxygen flow rate adjusting valve, the first oxygen pressure transmitter 2, the second oxygen pressure transmitter 3, fow-through orifice 4, oxygen differential pressure transmitter 40, oxygen intake trip valve 5 and oxygen outlet trip valve.The first oxygen pressure transmitter 2 one ends connect oxygen pipe network 6, the other end connects an end of oxygen intake trip valve 5, the other end of this oxygen intake trip valve 5 connects oxygen pressure variable valve 1, this oxygen pressure variable valve 1 is by the second oxygen pressure transmitter 3 connection traffic plate holes 4, this flow plate hole 4 connects the oxygen rifle by pipeline, this pipeline is provided with oxygen flow rate adjusting valve and oxygen outlet trip valve, and this oxygen outlet trip valve is positioned at the end near the oxygen rifle.Fow-through orifice 4 also connects oxygen differential pressure transmitter 40 simultaneously, and differential pressure value and flow that oxygen differential pressure transmitter 40 is measured are linear, comes the perforate size of adjust flux orifice plate 4 to regulate oxygen flow according to differential pressure value.Fow-through orifice 4 in the utility model and the pipeline between the oxygen rifle can be two-way, this fow-through orifice 4 is connected an oxygen rifle 90 by the first oxygen flow rate adjusting valve 70 on a pipeline wherein with the first oxygen outlet trip valve 80, this flow plate hole 4 is connected another oxygen rifle 91, two oxygen rifles by the second oxygen flow rate adjusting valve 71 on another pipeline and in turn oxygen blast is carried out in converter 10 with the second oxygen outlet trip valve 81.Wherein the first oxygen pressure transmitter 2 is used for the inlet pressure before oxygen pressure variable valve 1 is detected, and the second oxygen pressure transmitter 3 is used for the top hole pressure after oxygen pressure variable valve 1 is detected.
Can adopt force value after the method for picture historical data trend curve is recorded oxygen pressure variable valve initial opening and valve in the debug phase.Then people's pressure of oxygen hose net for a change, and attempt by changing the initial opening of oxygen pressure variable valve, oxygen pressure variable valve downstream pressure can be remained unchanged, by contrasting different oxygen ductwork pressures and different oxygen pressure variable valve initial openings, draw a curve of an oxygen ductwork pressure and oxygen pressure variable valve initial opening, like this when the pressure of oxygen pipe network changes, can regulate the initial opening of oxygen pressure variable valve according to this linearity curve, adjust to automatically a desirable angle.
In the utility model to Converter Oxigen Blowing pressure adaptive adjustment control method be:
1, the signal with each equipment in the utility model accesses the PLC Controlling System, and the debugging of the single-point of completion system;
2, with the operator-machine-interface HMI(Human Machine Interface of picture) be connected with the PLC system;
3, detect respectively oxygen pressure variable valve inlet pressure, oxygen pressure variable valve top hole pressure by the first oxygen pressure transmitter and the second oxygen pressure transmitter, and use the data trend Curve Software of picture to record oxygen pressure variable valve inlet pressure, oxygen pressure variable valve top hole pressure, three parameters of pressure regulator valve output valve;
4, by manual control make oxygen pressure variable valve inlet pressure reach 2.0MPa(or more than), by adjusting the initial opening of oxygen pressure variable valve, make the variable valve top hole pressure reach 1.2 MPa;
5, people's oxygen pressure variable valve inlet pressure for a change reaches the 1.7MPa left and right, changes the initial opening of oxygen pressure variable valve, makes the variable valve top hole pressure reach 1.2 MPa;
6, people's oxygen pressure variable valve inlet pressure for a change again reaches the 1.4MPa left and right, changes the initial opening of oxygen pressure variable valve, makes the variable valve top hole pressure reach 1.2 MPa;
7, by observing the trend curve of above-mentioned parameter, draw more satisfactory rule of thumb data, be organized into the curve that oxygen hose web portal pressure and oxygen pressure variable valve initial opening arrange, and it is arranged in the PLC program.
So far, once complete Converter Oxigen Blowing pressure adaptive regulation and control system setting work just all is through with.At the initial stage of bessemerizing, adopt present method to carry out open loop and control, when the instantaneous delivery of oxygen reaches when setting flux values, then change PID over to and automatically regulate.
Above embodiment is not only in order to restriction in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. Converter Oxigen Blowing pressure adaptive regulation and control system, it is characterized in that, it includes oxygen pressure variable valve, oxygen flow rate adjusting valve, the first oxygen pressure transmitter, the second oxygen pressure transmitter, fow-through orifice, oxygen differential pressure transmitter, oxygen intake trip valve and the oxygen outlet trip valve of bessemerizing the PLC Controlling System and being controlled by this PLC Controlling System; This first oxygen pressure transmitter one end connects the oxygen pipe network; The other end connects an end of oxygen intake trip valve; The other end of this oxygen intake trip valve connects the oxygen pressure variable valve; This oxygen pressure variable valve is by the second oxygen pressure transmitter connection traffic plate hole; This flow plate hole connects the oxygen rifle by pipeline; This pipeline is provided with described oxygen flow rate adjusting valve and oxygen outlet trip valve; This oxygen outlet trip valve is positioned at the end near the oxygen rifle; This oxygen differential pressure transmitter connects this fow-through orifice and controls the perforate size of this fow-through orifice; This first oxygen pressure transmitter and this second oxygen pressure transmitter are located at respectively before and after this oxygen pressure variable valve and inlet pressure and top hole pressure are detected.
2. Converter Oxigen Blowing pressure adaptive regulation and control system as claimed in claim 1; It is characterized in that; Described oxygen flow rate adjusting valve includes the first oxygen flow rate adjusting valve and the second oxygen flow rate adjusting valve; Described oxygen outlet trip valve includes the first oxygen outlet trip valve and the second oxygen outlet trip valve; Pipeline between described fow-through orifice and oxygen rifle is two-way; This fow-through orifice is connected an oxygen rifle by the first oxygen flow rate adjusting valve on a pipeline wherein with the first oxygen outlet trip valve; This flow plate hole is connected another oxygen rifle by the second oxygen flow rate adjusting valve on another pipeline with the second oxygen outlet trip valve; Two oxygen rifles carry out oxygen blast to converter in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320151769 CN203256295U (en) | 2013-03-29 | 2013-03-29 | Self-adapted regulation control system of oxygen blowing pressure of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320151769 CN203256295U (en) | 2013-03-29 | 2013-03-29 | Self-adapted regulation control system of oxygen blowing pressure of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203256295U true CN203256295U (en) | 2013-10-30 |
Family
ID=49468879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320151769 Expired - Fee Related CN203256295U (en) | 2013-03-29 | 2013-03-29 | Self-adapted regulation control system of oxygen blowing pressure of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203256295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184303A (en) * | 2013-03-29 | 2013-07-03 | 中冶南方工程技术有限公司 | Self-adaptive regulation control system for oxygen blowing pressure of converter and control method thereof |
| CN104120212A (en) * | 2014-08-12 | 2014-10-29 | 中冶赛迪电气技术有限公司 | Novel OG controlling method for dust collection of converter |
| CN108504816A (en) * | 2018-03-21 | 2018-09-07 | 中冶东方工程技术有限公司 | Oxygen blown control method in converter top-blow converting process |
-
2013
- 2013-03-29 CN CN 201320151769 patent/CN203256295U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184303A (en) * | 2013-03-29 | 2013-07-03 | 中冶南方工程技术有限公司 | Self-adaptive regulation control system for oxygen blowing pressure of converter and control method thereof |
| CN104120212A (en) * | 2014-08-12 | 2014-10-29 | 中冶赛迪电气技术有限公司 | Novel OG controlling method for dust collection of converter |
| CN104120212B (en) * | 2014-08-12 | 2016-05-04 | 中冶赛迪电气技术有限公司 | The new OG control method of a kind of converter dust-removing |
| CN108504816A (en) * | 2018-03-21 | 2018-09-07 | 中冶东方工程技术有限公司 | Oxygen blown control method in converter top-blow converting process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104534504B (en) | Rotary kiln combustion control device and method | |
| CN203256295U (en) | Self-adapted regulation control system of oxygen blowing pressure of converter | |
| CN203630649U (en) | Gas flow or pressure adjustment device | |
| CN103184303A (en) | Self-adaptive regulation control system for oxygen blowing pressure of converter and control method thereof | |
| CN201087209Y (en) | Oxygen supply automatic control device for oxygen-enriched smelting | |
| CN102591285A (en) | Universal automatic control system for AOD (Argon Oxygen Decarburization) and top-bottom combined blown furnace | |
| CN220413447U (en) | RH vacuum treatment circulating gas adjusting and controlling device | |
| CN202909645U (en) | Automatic nitrogen-hydrogen proportioning and mixing device | |
| CN104296548A (en) | Temperature cascade control system of casting holding furnace and control method of temperature cascade control system | |
| CN202823158U (en) | Automatic control structure for potential of hydrogen (pH) and desulfurization degree of size of wet desulfurization absorption tower using limestone | |
| CN108504816B (en) | Method for controlling oxygen blowing in converter top blowing process | |
| CN206424788U (en) | Denitration automatic adjustment circuit device | |
| CN108571617A (en) | Steam valve open and close control system and method, tobacco processing equipment | |
| CN105154615A (en) | Automatic adjusting device and method for converter second venturi throat | |
| CN204508811U (en) | Nitrogen gas purity automatic-adjusting device | |
| CN104774992B (en) | Method for adopting control device for converter steelmaking nitrogen-oxygen combined blowing to realize converter steelmaking nitrogen-oxygen combined blowing | |
| CN204918635U (en) | Safety device of oxygen boosting before blast furnace machine | |
| CN210495869U (en) | Ozone input volume automatic control system in ozone denitration | |
| CN208237486U (en) | A kind of tank deck self-checking device | |
| CN203212590U (en) | Oxygen coal gun cooling medium regulating and controlling system | |
| CN208013794U (en) | A kind of wireless gas flow control integrated apparatus | |
| CN203754755U (en) | Pressure and flow control system of bipolar closed loop oxygen lance | |
| CN205237277U (en) | Gas brazing intelligence steady voltage regulating current system | |
| CN108265151B (en) | Double-closed-loop dynamic optimization OG method converter gas recovery and fan energy-saving control method | |
| CN104694685A (en) | System and method for controlling angle of blast furnace throttle valve through redundancy detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20160329 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |