CN105201810A - DCS (distributed control system)-based quick fault finding method - Google Patents
DCS (distributed control system)-based quick fault finding method Download PDFInfo
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- CN105201810A CN105201810A CN201510514515.8A CN201510514515A CN105201810A CN 105201810 A CN105201810 A CN 105201810A CN 201510514515 A CN201510514515 A CN 201510514515A CN 105201810 A CN105201810 A CN 105201810A
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Abstract
The invention discloses a DCS (distributed control system)-based quick fault finding method which comprises the following steps: periodically acquiring a DCS signal input by an oxygen compressor, judging whether the input DCS signal achieves the interlock shutdown condition, if so, transmitting a shutdown command by the DCS system to control the oxygen compressor to shut down, and if not, continuing acquiring the DCS signal input by the oxygen compressor; and after the oxygen compressor is shut down, keeping the DCS signal finally acquired before the shutdown constant, and finding the fault cause. The monitor interface in the DCS system is provided with icons for displaying normality or faults, wherein the normality icon is green, and the fault icon is red. The method intuitively judges the fault cause according to the icon color for marking the fault in the monitor interface in the DCS system, thereby reducing the reasons for finding the fault causes.
Description
Technical field
The present invention relates to technical field of automation in industry, be specifically related to a kind of method of the fast finding fault based on DCS system.
Background technique
In oxygen making unit, Oxygen turbocompressor (hereinafter referred to as oxygen compressor) belongs to oxygen visual plant, rated power 4000KW, is applied in ironmaking, steel-making industry, in mainly providing, low oxygen.
Oxygen compressor has multiple Concatenate shut-down condition (as each measuring point temperature, pressure, vibration etc.), when oxygen compressor causes shutdown because of fault, because Concatenate shut-down parameter is more, adopts DCS control system to monitor it, comparatively loaded down with trivial details when checking tendency chart.In addition, ipc monitor picture image data cycle set is 1000ms, parameter value when so likely upper-position unit does not collect shutdown, thus cannot judge rapidly oxygen compressor disorderly closedown reason, increases the processing time of failure problems.If cannot machine halt trouble be recovered, consider for device security, do not allow to start oxygen compressor, the normal air feed of company will be had a strong impact on, company is produced and causes tremendous influence.
Summary of the invention
In view of this, the application provides a kind of method of the fast finding fault based on DCS system, and the color by the icon indicating fault in the monitoring interface in DCS system judges failure cause intuitively, greatly reduces the reason of looking up the fault reason.
For solving above technical problem, technological scheme provided by the invention is a kind of method of the fast finding fault based on DCS system, the method for described looking up the fault in the following ways:
Periodically gather the DCS signal of oxygen compressor input, judge whether the DCS signal inputted reaches the condition of Concatenate shut-down, if reach DCS system to send the shutdown of cutoff command control oxygen compressor, if do not reach, continue to perform the DCS signal gathering oxygen compressor and input;
After described oxygen compressor is shut down, the DCS signal finally collected before keeping shutdown is constant, looking up the fault reason.
Further, the condition of described Concatenate shut-down interlocks parameter not in normal range of operation, and parameter of wherein interlocking includes but not limited to each measuring point temperature of oxygen compressor, pressure, vibration parameters.
Further, the monitoring interface in described DCS system also comprises the icon showing normal or fault, and wherein normal Icon Color is green, and fault Icon Color is red.
Further, the cycle gathering the DCS signal of oxygen compressor input is 1-2 second.
Further, after oxygen compressor is shut down, the DCS signal that maintenance finally collects is constant until hand reset.
Further, the color according to the icon on the monitoring interface in DCS system judges failure cause fast, looking up the fault.
The method of the fast finding fault based on DCS system of the present invention; there is following beneficial effect: the present invention by keeping the process of a period of time after oxygen compressor is shut down to DCS signal; and the shutdown interlocking parameter represented by DCS signal is presented on the monitoring interface in DCS system in the mode of icon; so that staff judges failure cause intuitively by the color of the icon indicating fault in the monitoring interface in DCS system; greatly reduce the reason of looking up the fault reason, safeguard that the safety and steady of oxyen manutactory's control system runs.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the fast finding fault that the present invention is based on DCS system.
Embodiment
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Primary improvements of the present invention are: in original DCS system structure; after the chain shutdown of judgment device; make the trouble signal collected keep a period of time, and trouble signal is reacted on the monitoring interface in DCS system intuitively in the mode of icon color combining.
See Fig. 1, described by the embodiment of the present invention is the method for fast finding fault based on DCS system, and the realization of the method adopts following steps:
S101, DCS system controller cycle ground gathers the DCS signal of oxygen compressor input.Wherein, the DCS signal of an oxygen compressor input can be gathered second every 1-2.
S102, judge whether the DCS signal inputted reaches the condition of Concatenate shut-down, send cutoff command and control oxygen compressor if reach DCS system and shut down, if do not reach, continue to perform the DCS signal gathering oxygen compressor input.
The DCS signal collected is converted accordingly to the interlocking parameter value involved by oxygen compressor shutdown; and this value and the parameter threshold of Concatenate shut-down pre-set are compared see whether in normal range of operation; if not in normal range of operation, DCS system will send cutoff command and control oxygen compressor shutdown.If in normal range (NR), devices illustrated normal operation, so DCS system continues to perform the DCS signal gathering oxygen compressor input.
After S103, oxygen compressor are shut down, the DCS signal finally collected before keeping shutdown is constant, looking up the fault reason.Wherein, the DCS signal finally collected before keeping shutdown is constant until hand reset.
The monitoring interface of the DCS system described in the present embodiment also correspondingly arranges the icon showing normal or fault, and wherein normal Icon Color is green, and fault Icon Color is red.The shutdown interlocking parameter represented by the corresponding DCS signal of display of this icon.If interlocking parameter is not in normal range of operation, what icon showed is exactly red, if interlocking parameter is in normal range (NR), devices illustrated normal operation, what icon showed is exactly green, therefore, only needs the color relation of viewing icon to judge whether fault.
Interlocking parameter described in the present embodiment includes but not limited to the parameter such as each measuring point temperature of oxygen compressor, pressure, vibration.
Embodiment 1
Compressor one section outlet gas temperature stops because of 160 DEG C of (Concatenate shut-down threshold value is higher than 154.3 DEG C) overtemperatures.After existing DCS system sends cutoff command parking, if one section outlet temperature return is to operation enabled condition, the color of the icon of monitoring interface display returns to green by redness, so just cannot judge to shut down reason from monitored picture.Current looking up the fault just only have parking then one by one equipment go manually to fix a breakdown, lose time.
Embodiment 2
Apply the present invention to search oxygen compressor fault, compressor one section outlet gas temperature stops because of 160 DEG C of (Concatenate shut-down threshold value is higher than 154.3 DEG C) overtemperatures.After DCS system sends cutoff command parking, because trouble signal remains unchanged always, so no matter how this temperature changes, the color of the icon of monitoring interface display will keep red, until hand reset always.Technician can location determination to be out of order reason rapidly by the color tips of icon, thus substantially reduces the failure problems processing time.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1., based on a method for the fast finding fault of DCS system, it is characterized in that, the method for described looking up the fault in the following ways:
Periodically gather the DCS signal of oxygen compressor input, judge whether the DCS signal inputted reaches the condition of Concatenate shut-down, if reach DCS system to send the shutdown of cutoff command control oxygen compressor, if do not reach, continue to perform the DCS signal gathering oxygen compressor and input;
After described oxygen compressor is shut down, the DCS signal finally collected before keeping shutdown is constant, looking up the fault reason.
2. the method for the described fast finding fault based on DCS system according to claim 1; it is characterized in that; the condition of described Concatenate shut-down interlocks parameter not in normal range of operation, and parameter of wherein interlocking includes but not limited to each measuring point temperature of oxygen compressor, pressure, vibration parameters.
3. the method for the described fast finding fault based on DCS system according to claim 2, is characterized in that, the monitoring interface in described DCS system also comprises the icon showing normal or fault, and wherein normal Icon Color is green, and fault Icon Color is red.
4. the method for the described fast finding fault based on DCS system according to claim 1, is characterized in that, the cycle gathering the DCS signal of oxygen compressor input is 1-2 second.
5. the method for the described fast finding fault based on DCS system according to claim 1, is characterized in that, after oxygen compressor is shut down, the DCS signal that maintenance finally collects is constant until hand reset.
6. the method for the described fast finding fault based on DCS system according to claim 3, it is characterized in that, the color according to the icon on the monitoring interface in DCS system judges failure cause fast, looking up the fault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510514515.8A CN105201810B (en) | 2015-08-20 | 2015-08-20 | A kind of method of the quick lookup failure based on DCS system |
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| CN201510514515.8A CN105201810B (en) | 2015-08-20 | 2015-08-20 | A kind of method of the quick lookup failure based on DCS system |
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| CN105201810A true CN105201810A (en) | 2015-12-30 |
| CN105201810B CN105201810B (en) | 2017-06-13 |
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| CN106351825A (en) * | 2016-08-30 | 2017-01-25 | 安徽三星化工有限责任公司 | Method for achieving judgment on machine pump running state and interlocking through relevant parameters |
| CN107368053A (en) * | 2017-08-23 | 2017-11-21 | 上海云统信息科技有限公司 | A kind of production line stop reponse system based on Distributed Control System |
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| CN105201810B (en) | 2017-06-13 |
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