CN109281824A - Zero emptying system of oxygenerator air compressor machine and method of vanadium titanium STEELMAKING PRODUCTION line - Google Patents
Zero emptying system of oxygenerator air compressor machine and method of vanadium titanium STEELMAKING PRODUCTION line Download PDFInfo
- Publication number
- CN109281824A CN109281824A CN201811156142.1A CN201811156142A CN109281824A CN 109281824 A CN109281824 A CN 109281824A CN 201811156142 A CN201811156142 A CN 201811156142A CN 109281824 A CN109281824 A CN 109281824A
- Authority
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- China
- Prior art keywords
- air compressor
- controller
- compressor machine
- production line
- vanadium titanium
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
Abstract
It include air compressor the invention discloses a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line and method, system, the air compressor outlet side is provided with outlet valve, and exhaust-valve branch is provided between outlet valve and air compressor；Further include the controller for controlling air compressor entry guide vane aperture, emptying valve opening, and connect the measuring transducer for feedback air compressor outlet end pressure with controller.Air inlet guide vane aperture carries out chain, realization PID automatic control, adjustment air compressor machine surge curve, guarantee unit operational safety with air compressor machine outlet pressure.
Description
Technical field
The device and method that the present invention relates to a kind of to avoid oxygen making unit air compressor machine from emptying on vanadium titanium STEELMAKING PRODUCTION line.
Background technique
In existing vanadium titanium STEELMAKING PRODUCTION, need to compress air using the air compressor in oxygen making unit, it will
Air pressurized is sent to space division system to 0.5MPa and is separated, and oxygen and nitrogen are generated.Air compressor machine imported valve keeps complete at present
It opens, but prevents air compressor machine from surge occurs, outlet blow valve keeps 15% or so aperture, i.e. air compressor machine is by part after air pressurized
Air is directly vented, and does not enter air separation column.It thus will increase air compressor machine power consumption, lead to the waste of the energy.
Summary of the invention
In view of this, the present invention provides a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line, PID is utilized
Controller is that parameter carries out automatically controlling entry guide vane aperture using air compressor machine outlet pressures, prevents air compressor machine from breathing heavily
Vibration, while avoiding the normally opened caused energy waste of exhaust-valve.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of oxygenerator pneumatics of vanadium titanium STEELMAKING PRODUCTION line
Zero emptying system of machine, including air compressor, the air compressor outlet side are provided with outlet valve, and outlet valve and air
Exhaust-valve branch is provided between compressor；It further include for controlling air compressor entry guide vane aperture, emptying valve opening
Controller, and the measuring transducer for being used for feedback air compressor outlet end pressure is connect with controller.
As an improvement the controller is PID controller.
As a preference, the outlet valve is normally opened.
As a preference, the exhaust-valve is normally closed.
The present invention also provides a kind of methods controlled using above system, comprising the following steps:
A., one pressure preset is set in the controller；
B. period use is carried out to air compressor outlet end pressure using measuring transducer, and sampled data feedback is arrived
Controller；
C. sampled value is compared by controller with preset value and preset logical formula calculate in tape controller
To controlling value；
D. controller controls guide vane opening using controlling value；
E. when guide vane opening is located at minimum and the collected pressure value of measuring transducer is still greater than preset value, controller
Exhaust-valve is controlled to open.
As an improvement preset value is 2.0MPa in step A.
As a preference, the minimum aperture of the entry guide vane is 50%.
As an improvement the sampling period is 0.5 millisecond in step C.
The invention has the beneficial effects that: air inlet guide vane aperture and the progress of air compressor machine outlet pressure are chain, realize that PID is automatic
Control adjusts air compressor machine surge curve, guarantees unit operational safety.Another air compressor machine outlet valve keeps full-gear and exhaust-valve
It keeps full-shut position (normal operation), guarantees that the air after being pressurized all is sent into space division system in this way, reduce air compressor machine power consumption.
Initial estimate is saved electricity 1800KW.h/ days.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, With reference to embodiment
The present invention is described in further detail.
As shown in Figure 1, the present invention includes air compressor, the air compressor outlet side is provided with outlet valve, and
Exhaust-valve branch is provided between outlet valve and air compressor；Further include for control air compressor entry guide vane aperture,
The controller of valve opening is emptied, and connect the measuring transducer for feedback air compressor outlet end pressure with controller.
Controller is PID controller.The outlet valve is normally opened.The exhaust-valve is normally closed.
PID controller (proportional-integral derivative controller) is a common feedback loop portion in Industry Control Application
Part is made of proportional unit P, integral unit I and differentiation element D.
This it is theoretical and application it is crucial that make correctly measurement and relatively after, how could preferably correcting system.
PID (ratio (proportion), integral (integration), differential (differentiation)) controller is made
Have last 100 years history for earliest practical controller, is currently still most widely used industrial control unit (ICU).PID controller
It is easily understood, the prerequisites such as accurate system model is not required in use, thus become the controller being most widely used.
The present invention also provides a kind of methods controlled using above system, comprising the following steps:
A., one pressure preset is set in the controller；In the present invention, preset value 2.0MPa.
B. period use is carried out to air compressor outlet end pressure using measuring transducer, and sampled data feedback is arrived
Controller；Sampling period is 0.5 millisecond.
C. sampled value is compared by controller with preset value and preset logical formula calculate in tape controller
To controlling value；PID controller is made of proportional unit (P), integral unit (work) and differentiation element (D).Its input e (t) with it is defeated
It is 0 He respectively that the relationship of u (t), which is the bound integrated in u (t)=Kp [e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt] formula, out
t
Therefore its transmission function are as follows: G (s)=U (s)/E (s)=Kp [1+1/ (TI*s)+TD*s].Wherein Kp is ratio
Coefficient；TI is integration time constant；TD is derivative time constant.
D. controller controls guide vane opening using controlling value；The practical aperture of guide vane is 0-100%, in the present invention, will
It leads leaf divergence and is set as 50-100%, guarantee air inlet.
E. when guide vane opening is located at minimum and the collected pressure value of measuring transducer is still greater than preset value, controller
Exhaust-valve is controlled to open.Its purpose is that preventing hypertonia from generating surge, it is ensured that the safety of production.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (8)
1. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line, including air compressor, it is characterised in that: institute
It states air compressor outlet side and is provided with outlet valve, and be provided with exhaust-valve branch between outlet valve and air compressor；Also
It connect including the controller for controlling air compressor entry guide vane aperture, emptying valve opening, and with controller for anti-
Present the measuring transducer of air compressor outlet end pressure.
2. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 1, feature exist
In: the controller is PTD controller.
3. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 1, feature exist
In: the outlet valve is normally opened.
4. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 1, feature exist
In: the exhaust-valve is normally closed.
What 5. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 1 was controlled
Method, it is characterised in that the following steps are included:
A., one pressure preset is set in the controller；
B. using measuring transducer to air compressor outlet end pressure carry out period use, and by sampled data feedback to control
Device；
C. sampled value is compared by controller with preset value and preset logical formula carries out that control is calculated in tape controller
Value processed；
D. controller controls guide vane opening using controlling value；
E. when guide vane opening is located at minimum and the collected pressure value of measuring transducer is still greater than preset value, controller control
Exhaust-valve is opened.
What 6. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 5 was controlled
Method, it is characterised in that: preset value is 2.0MPa in step A.
What 7. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 5 was controlled
Method, it is characterised in that: the minimum aperture of the entry guide vane is 50%.
What 8. a kind of zero emptying system of oxygenerator air compressor machine of vanadium titanium STEELMAKING PRODUCTION line according to claim 5 was controlled
Method, it is characterised in that: the sampling period is 0.5 millisecond in step C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156142.1A CN109281824A (en) | 2018-09-29 | 2018-09-29 | Zero emptying system of oxygenerator air compressor machine and method of vanadium titanium STEELMAKING PRODUCTION line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156142.1A CN109281824A (en) | 2018-09-29 | 2018-09-29 | Zero emptying system of oxygenerator air compressor machine and method of vanadium titanium STEELMAKING PRODUCTION line |
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| Publication Number | Publication Date |
|---|---|
| CN109281824A true CN109281824A (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156142.1A Pending CN109281824A (en) | 2018-09-29 | 2018-09-29 | Zero emptying system of oxygenerator air compressor machine and method of vanadium titanium STEELMAKING PRODUCTION line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389742A (en) * | 2021-06-01 | 2021-09-14 | 开封迪尔空分实业有限公司 | Air separation supercharging process |
| CN113404707A (en) * | 2021-06-01 | 2021-09-17 | 开封迪尔空分实业有限公司 | A pressure boost tower for empty |
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| CN113404707B (en) * | 2021-06-01 | 2023-11-03 | 中冶南方(黄石)气体有限公司 | A booster tower for space division |
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Application publication date: 20190129 |
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