CN103243191A - Air dispensation safety control method - Google Patents
Air dispensation safety control method Download PDFInfo
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- CN103243191A CN103243191A CN2013101983462A CN201310198346A CN103243191A CN 103243191 A CN103243191 A CN 103243191A CN 2013101983462 A CN2013101983462 A CN 2013101983462A CN 201310198346 A CN201310198346 A CN 201310198346A CN 103243191 A CN103243191 A CN 103243191A
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- wind turning
- air feed
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Abstract
The invention discloses an air dispensation safety control method, and relates to the field of steel production. The method of controlling the air dispensation comprises the following specific steps: 1) judging whether a fault exists in a fan; 2) judging whether the wind pressure is within a preset range; 3) determining an air dispensation object, and judging whether check valves are closed; 4) judging whether air dispensation valves are in a standby state; and 5) judging whether air supply main pipelines which are connected with the air dispensation valves in the standby state satisfy the air dispensation conditions, if so, switching on one air dispensation valve according to a preset air dispensation sequence, and carrying out air dispensation operation, and otherwise, finishing. According to the method, when one main air supply pipeline can not be used for supplying air for a blast furnace normally, the air dispensation conditions are judged to be satisfied, air is dispensed for the air dispensation object from other main air supply pipelines, thereby preventing the blast furnace from an air cutting situation, and avoiding the great economic loss caused by the air cutting of the blast furnace.
Description
Technical field
The present invention relates to the Iron and Steel Production field, particularly a kind of blast furnace wind turning security method.
Background technology
Blower fan is the key of the normal operation of blast furnace, and whether the production that the fan operation state is directly connected to blast furnace normal and safety.Owing to be subjected to the restriction of power supply mode and the factor of blower fan, the blower fan stopping accident that can break down.After if the blower fan of operation is shut down disconnected wind for some reason, even moment disconnected wind, all may cause the major accident of blast-furnace tuyere pour slag, cause great loss and be forced to urgent damping down to blast furnace.Blast furnace resumes production generally needs 3 to 7 days, needs two weeks when serious.Also need 1-2 hour as emergency start stand-by fan behind the resolute wind, can't satisfy the blast furnace safety in production.
Summary of the invention
Purpose of the present invention just provides a kind of wind turning security personnel control method, and it can can't air feed or air feed when unusual at an air feed main pipe line, guaranteeing that blast furnace can be because of disconnected wind, and causes irritating the slag accident by other air feed main pipe line wind turning.
The objective of the invention is to realize by such technical scheme, it includes the many air feed main pipe lines that are respectively a blast furnace air feed, be provided with the wind turning pipeline between any two air feed main pipe lines, be provided with a wind turning valve at the wind turning pipeline, each air feed main pipe line is respectively by a typhoon machine air feed, air outlet at every typhoon machine is provided with a vacuum breaker, specifically controls the wind turning method and is:
1) judge whether fan trouble, can't send wind, if, then turn to step 3), if not, then turn to step 2);
2) blast of three air feed main pipe lines of monitoring judges whether within preset range, if not, then turn to step 3), if then finish;
3) determine the air feed main pipe line at fault blower fan place or the unusual air feed main pipe line of blast be wind turning to picture, whether be judged as wind turning closed to the fan outlet vacuum breaker of picture air feed, if, then change step 4) over to, if not, then finish;
4) judge whether wind turning handles armed state to wind turning valve between picture and other air feed main pipe line, if there is more than one wind turning valve to be ready, then turns to step 5), if do not have, then finishes;
5) judge whether the air feed main pipe line that the wind turning valve be ready connects meets the wind turning condition, if meet, then opens a wind turning valve according to default wind turning sequencing, carries out the wind turning operation, if do not meet, then finishes.
Further, the condition of wind turning described in the step 5) is: wind turning is lower than preset value a to the blast of picture, and whether other air feed main pipe line is higher than preset value a, and the air feed main pipe line that is higher than preset value a meets the wind turning condition.
Further, preset value a is 0.2Mpa.
Further, the blast that default wind turning sequencing described in the step 5) is applicable to a plurality of wind turning main pipe lines is during greater than preset value a, and selecting one of them wind turning main pipe line sequentially is that wind turning is to the picture wind turning.
Further, the quantity of described blast furnace, wind turning main pipe line and blower fan is three.
Owing to adopted technique scheme, the present invention to have following advantage:
When a main feed pipe road can't be for the normal air feed of blast furnace, judge whether to meet the wind turning condition by the present invention, from other main feed pipe road interim for wind turning to the picture wind turning, prevent that disconnected landscape condition from appearring in blast furnace, avoid the big financial loss of tool that causes because of the disconnected wind of blast furnace.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can obtain instruction from the practice of the present invention.Target of the present invention and other advantages can realize and obtain by following specification sheets and claims.
Description of drawings
Description of drawings of the present invention is as follows.
Fig. 1 is wind turning schematic flow sheet of the present invention;
Fig. 2 is the structural representation of embodiment one.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Wind turning security personnel control method, include the many air feed main pipe lines that are respectively a blast furnace air feed, be provided with the wind turning pipeline between any two air feed main pipe lines, be provided with a wind turning valve at the wind turning pipeline, each air feed main pipe line is respectively by a typhoon machine air feed, air outlet at every typhoon machine is provided with a vacuum breaker, specifically controls the wind turning method and is:
1) judge whether fan trouble, can't send wind, if, then turn to step 3), if not, then turn to step 2);
2) blast of three air feed main pipe lines of monitoring judges whether within preset range, if not, then turn to step 3), if then finish;
3) determine the air feed main pipe line at fault blower fan place or the unusual air feed main pipe line of blast be wind turning to picture, whether be judged as wind turning closed to the fan outlet vacuum breaker of picture air feed, if, then change step 4) over to, if not, then finish;
4) judge whether wind turning handles armed state to wind turning valve between picture and other air feed main pipe line, if there is more than one wind turning valve to be ready, then turns to step 5), if do not have, then finishes;
5) judge whether the air feed main pipe line that the wind turning valve be ready connects meets the wind turning condition, if meet, then opens a wind turning valve according to default wind turning sequencing, carries out the wind turning operation, if do not meet, then finishes.
The condition of wind turning described in the step 5) is: wind turning is lower than preset value a to the blast of picture, and whether other air feed main pipe line is higher than preset value a, and the air feed main pipe line that is higher than preset value a meets the wind turning condition.
Preset value a is 0.2Mpa.
The blast that default wind turning sequencing described in the step 5) is applicable to a plurality of wind turning main pipe lines is during greater than preset value a, and selecting one of them wind turning main pipe line sequentially is that wind turning is to the picture wind turning.
The quantity of described blast furnace, wind turning main pipe line and blower fan is three.
Embodiment one
Air dispensation system as shown in Figure 2, comprise the air feed main pipe line I of promising blast furnace I air feed, the air feed main pipe line II of blast furnace II air feed and the air feed main pipe line III of blast furnace III air feed, be provided with the wind turning pipeline between any two air feed main pipe lines, be provided with a wind turning valve at the wind turning pipeline, air feed main pipe line I is by blower fan I air feed, air feed main pipe line II is by blower fan II air feed, air feed main pipe line III is by blower fan III air feed, is provided with a vacuum breaker at the air outlet of blower fan I, blower fan II and blower fan III.
Suppose that the blower fan I breaks down, can't be the normal air feed of blast furnace I, the blast of sending out air feed main pipe line I through monitoring is higher or lower than normal blast.Judge whether the vacuum breaker of blower fan I air outlet closes this moment, just can carry out the wind turning operation if close, if the situation that wind-fall is poured into blower fan can appear in wind turning under the situation of not closing, can't guarantee the blast of blast furnace I.Behind the closure of check ring of blower fan I air outlet, judge whether the wind turning valve between air feed main pipe line II and the air feed main pipe line I is handled in armed state, perhaps whether the wind turning valve between air feed main pipe line III and the air feed main pipe line I is handled in armed state, and the wind turning valve is ready down and could finishes wind turning work by the wind turning valve.When air feed main pipe line blast deficiency maybe needs to overhaul, can initiatively close wind turning valve between this air feed main pipe line and other air feed main pipe lines, so between wind turning, need to judge whether the wind turning valve is ready earlier.Then, before air feed main pipe line II and air feed main pipe line III are the wind turning of air feed main pipe line I, whether the blast that can judge self again satisfies the wind turning requirement, and when air feed main pipe line II and air feed main pipe line III satisfied the wind turning demand simultaneously, optional one was the wind turning of air feed main pipe line I.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. wind turning security personnel control method, it is characterized in that: include the many air feed main pipe lines that are respectively a blast furnace air feed, be provided with the wind turning pipeline between any two air feed main pipe lines, be provided with a wind turning valve at the wind turning pipeline, each air feed main pipe line is respectively by a typhoon machine air feed, air outlet at every typhoon machine is provided with a vacuum breaker, specifically controls the wind turning method and is:
1) judge whether fan trouble, can't send wind, if, then turn to step 3), if not, then turn to step 2);
2) blast of three air feed main pipe lines of monitoring judges whether within preset range, if not, then turn to step 3), if then finish;
3) determine the air feed main pipe line at fault blower fan place or the unusual air feed main pipe line of blast be wind turning to picture, whether be judged as wind turning closed to the fan outlet vacuum breaker of picture air feed, if, then change step 4) over to, if not, then finish;
4) judge whether wind turning handles armed state to wind turning valve between picture and other air feed main pipe line, if there is more than one wind turning valve to be ready, then turns to step 5), if do not have, then finishes;
5) judge whether the air feed main pipe line that the wind turning valve be ready connects meets the wind turning condition, if meet, then opens a wind turning valve according to default wind turning sequencing, carries out the wind turning operation, if do not meet, then finishes.
2. wind turning as claimed in claim 1 security personnel control method, it is characterized in that, the condition of wind turning described in the step 5) is: wind turning is lower than preset value a to the blast of picture, and whether other air feed main pipe line is higher than preset value a, and the air feed main pipe line that is higher than preset value a meets the wind turning condition.
3. wind turning as claimed in claim 2 security personnel control method, it is characterized in that: preset value a is 0.2Mpa.
4. wind turning as claimed in claim 2 security personnel control method, it is characterized in that, the blast that default wind turning sequencing described in the step 5) is applicable to a plurality of wind turning main pipe lines is during greater than preset value a, and selecting one of them wind turning main pipe line sequentially is that wind turning is to the picture wind turning.
5. wind turning as claimed in claim 1 security personnel control method, it is characterized in that: the quantity of described blast furnace, wind turning main pipe line and blower fan is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101983462A CN103243191A (en) | 2013-05-24 | 2013-05-24 | Air dispensation safety control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101983462A CN103243191A (en) | 2013-05-24 | 2013-05-24 | Air dispensation safety control method |
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| CN103243191A true CN103243191A (en) | 2013-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752721A (en) * | 2022-03-23 | 2022-07-15 | 马鞍山钢铁股份有限公司 | Single-seat blast furnace fan power-saving system and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896895A (en) * | 2005-07-12 | 2007-01-17 | 马鞍山伏斯特科技发展有限公司 | Automatic controller of blast-furnace tuyere pour slag |
| CN201990692U (en) * | 2011-02-24 | 2011-09-28 | 中冶南方工程技术有限公司 | Automatic air dispensation system of multiple blast furnace blowers |
| CN102344980A (en) * | 2011-10-21 | 2012-02-08 | 中冶南方工程技术有限公司 | Air dispensation control system for blower system of blast furnace in metallurgical enterprise |
-
2013
- 2013-05-24 CN CN2013101983462A patent/CN103243191A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896895A (en) * | 2005-07-12 | 2007-01-17 | 马鞍山伏斯特科技发展有限公司 | Automatic controller of blast-furnace tuyere pour slag |
| CN201990692U (en) * | 2011-02-24 | 2011-09-28 | 中冶南方工程技术有限公司 | Automatic air dispensation system of multiple blast furnace blowers |
| CN102344980A (en) * | 2011-10-21 | 2012-02-08 | 中冶南方工程技术有限公司 | Air dispensation control system for blower system of blast furnace in metallurgical enterprise |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752721A (en) * | 2022-03-23 | 2022-07-15 | 马鞍山钢铁股份有限公司 | Single-seat blast furnace fan power-saving system and control method thereof |
| CN114752721B (en) * | 2022-03-23 | 2023-08-25 | 马鞍山钢铁股份有限公司 | Single-seat blast furnace fan supply protection system and control method thereof |
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Application publication date: 20130814 |