CN202208732U - Distributor adopted anti-blocking control system for coal injection branch pipes in blast furnace coal injection system - Google Patents
Distributor adopted anti-blocking control system for coal injection branch pipes in blast furnace coal injection system Download PDFInfo
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- CN202208732U CN202208732U CN2011202400570U CN201120240057U CN202208732U CN 202208732 U CN202208732 U CN 202208732U CN 2011202400570 U CN2011202400570 U CN 2011202400570U CN 201120240057 U CN201120240057 U CN 201120240057U CN 202208732 U CN202208732 U CN 202208732U
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Abstract
The utility model discloses a distributor adopted anti-blocking control system for coal injection branch pipes in a blast furnace coal injection system. The system comprises a distributor, a plurality of coal injection branch pipes, and a controller, wherein the distributor and the controller are respectively connected with the plurality of coal injection branch pipes. By adopting the system using a cycle sweeping method, the blockage rate of the coal injection branch pipes can be greatly reduced, the uniformity of the coal injection amount at a blast-furnace tuyere is stabilized, the work intensity of operators during the production is reduced, the automation level is improved, the safe production is ensured, and a blast furnace can stably and smoothly operate.
Description
Technical field
The utility model relates to the control techniques field, the anti-blocking system of particularly a kind of bf coal injection system divider coal jetting branch.
Background technology
Furnace coal spraying technology is the key link of blast furnace system composition optimizes; Having and reduce coke ratio significantly, increase economic efficiency, alleviate advantage such as environmental pollution. the coal powder injection technology is one of three big important technology routes of China's steel industry development as the megatrend of blast furnace technology development both at home and abroad.Along with the coal powder injection technology to big injection rate concentrated phase developer conveying direction. stable, uniformly coal powder blowing amount be keep furnace temperature stable, guarantee furnace condition anterograde, make blast furnace reach the important foundation of best smelting state.
The flowability of coal jetting branch coal dust receives very big influences such as the fluctuation, divider of coal dust ature of coal, humidity, granularity, conditions of blast furnace easily; Therefore cause the obstruction of coal jetting branch; Cause the one or more air ports of the blast furnace coal that breaks, make inhomogeneously, unstable, not only can influence blast-furnace roasting and distribute pulverized coal injection; Thereby and can burn the ordinary production that spray gun influences blast furnace, even the destruction working of a furnace causes damping down.All not good to winding-up amount control effect at present.Current; China's pulverized coal injection automatic control technology level is comparatively weak; This body structure of Dual-Phrase Distribution of Gas olid object is quite complicated; The domestic effective detection means that lacks coal jetting branch pulverized coal flow and obstruction, and the measuring instrument of external pulverized coal flow and obstruction costs an arm and a leg and effect is general, domestic application is few.Therefore, how to adopt a kind of system to prevent the obstruction of bf coal injection system winding-up arm, guarantee the stable of pulverized coal injection and evenly just seem particularly important.
At present; Domestic is to adopt temperature differential method or the stifled appearance of survey to judge whether arm stops up to the anti-blocking system of coal jetting branch; If stop up then close the coal injection cutting valve of coal jetting branch, open and purge trip valve coal jetting branch is purged, up to unimpeded; The shut-down purge trip valve is opened the coal injection cutting valve and is continued coal powder injection then.For this mode, have only when judging that arm just purges when stopping up, and can't prevent the obstruction of coal jetting branch in advance; And the purging of arm do not had rule yet, be prone to cause the blast-furnace tuyere coal powder injection inhomogeneous, asymmetric; Thereby influence the ordinary production of blast furnace, even destroy the working of a furnace.
Summary of the invention
One of purpose of the utility model provides a kind of anti-blocking system of coal jetting branch that reduces the coal jetting branch plugging rate.
According to an aspect of the utility model, provide the anti-blocking system of a kind of bf coal injection system divider coal jetting branch to comprise: divider, a plurality of coal jetting branch, unit; Said divider is connected with said a plurality of coal jetting branch respectively with unit.
Further, said system also comprises: module is set, and the said module that is provided with is connected with said unit.
Further, said unit comprises: judge module, control module; Said judge module is connected with control module.
Further, said control module comprises: first control unit, second control unit; Said first control unit and second control unit are connected with said judge module respectively.
Further, said first control unit comprises: first control subelement, first judgment sub-unit and the warning subelement; The said first control subelement is connected with said first judgment sub-unit respectively with said warning subelement.
Further, said second control unit comprises: second control subelement, second judgment sub-unit and the warning subelement; The said second control subelement is connected with said second judgment sub-unit respectively with said warning subelement.
Further, said system also comprises: appearance is blocked up in a plurality of surveys, and the stifled appearance of each said survey is arranged in each coal jetting branch.
Further, each said coal jetting branch is provided with the coal injection cutting valve and purges trip valve.
Further, said system also comprises: the coal injection cutting valve is responsible in coal powder injection and the purging trip valve is responsible in coal powder injection; The coal injection cutting valve is responsible in said coal powder injection and coal powder injection person in charge purging trip valve is arranged at the said coal powder injection person in charge.
Further, the number of said coal jetting branch is 16-40.
Further, said system also comprises: alarm module, and, each said coal jetting branch reports to the police when taking place to stop up.
According to what the utility model provided pulverized coal injection divider coal jetting branch is adopted the system of cycle purge; Can significantly reduce the plugging rate of coal jetting branch; Stablize the homogeneity of blast-furnace tuyere injecting coal quantity, reduce operator's in the production process working strength, improve automatization level; Powerful guarantee the safety of producing, for the blast furnace stable smooth operation creates conditions.
Description of drawings
Fig. 1 is the structured flowchart of the anti-blocking system of bf coal injection system divider coal jetting branch that provides of the utility model embodiment;
Fig. 2 is the structured flowchart of unit shown in Figure 1;
Fig. 3 is the structured flowchart of first control unit shown in Figure 2;
Fig. 4 is the structured flowchart of second control unit shown in Figure 2;
Fig. 5 is the structural representation of the pulverized coal injection dispenser system that provides of the utility model embodiment;
Fig. 6 is the schematic flow sheet of the anti-blocking control of coal jetting branch carried out of the pulverized coal injection dispenser system based on shown in Figure 5 that the utility model embodiment provides;
Fig. 7 is that the control flow synoptic diagram when reporting to the police is stopped up in the appearance that the utility model embodiment provides.
The utility model purpose, function and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
As shown in Figure 1, the anti-blocking system of a kind of bf coal injection system divider coal jetting branch that the utility model embodiment provides comprises divider 1, a plurality of coal jetting branch 2, unit 3, the stifled appearance of module 4, alarm module and a plurality of survey is set.Divider 1 is connected with a plurality of coal jetting branch 2 respectively with unit 3.Module 4 is set to be connected with unit 3.Divider 1 will be distributed to a plurality of coal jetting branch 2 from the coal dust that coal powder injection is responsible for.A plurality of coal jetting branch 2 are under unit 3 control, and in cycle purge in the cycle, the mode through cycle purge purges.Wherein, the number of coal jetting branch 2 is 16-40, can be provided with according to actual needs.Module 4 is set sets the purge time of cycle purge cycle and each coal jetting branch.For example, setting the number in cycle purge cycle is 20 times.The purge time of each coal jetting branch is 10-60 second.Each is surveyed stifled appearance and is arranged in each coal jetting branch.Alarm module is reported to the police when each said coal jetting branch takes place to stop up.Each coal jetting branch is provided with coal jetting branch coal injection cutting valve and coal jetting branch purges trip valve.Be provided with coal powder injection the coal powder injection person in charge and be responsible for coal injection cutting valve and coal powder injection person in charge purging trip valve.
Referring to Fig. 2, unit 3 comprises judge module 30 and control module 31.Judge module 30 is connected with control module 31.Wherein, judge module 30 judges that successively whether coal jetting branch is at automatic coal powder injection state in a loop cycle.For example, the number of setting the cycle purge cycle is 20 times, and in each purge cycles, judge module 30 need judge successively that whether coal jetting branch is at automatic coal powder injection state so.Control module 31, is controlled this coal jetting branch and is purged by purge time at automatic coal powder injection state at judge module 30 judgement coal jetting branch, purges the end back and controls this coal jetting branch coal powder injection.Control module 31 comprises first control unit 311 and second control unit 312.First control unit 311 and second control unit 312 are connected with judge module 30 respectively.Wherein, first control unit 311 judges that at judge module 30 coal jetting branch are during at coal powder injection state automatically, controls the coal injection cutting valve of this coal jetting branch and closes, and purges trip valve and opens, and purges.Second control unit 312 is controlled the purging trip valve of this coal jetting branch automatically and is closed after treating that purge time finishes, and the coal injection cutting valve is opened, and transfers the coal powder injection state to.Judge module 30 also is used for when said a plurality of coal jetting branch are begun to carry out cycle purge, and whether the time of carrying out the cycle of cycle purge begins to judge.
Referring to Fig. 3, the first control subelement 311 comprises first control subelement 3111, first judgment sub-unit 3112 and the warning subelement 3113.The first control subelement 3111 is connected with first judgment sub-unit 3112 respectively with warning subelement 3113.The coal injection cutting valve of first these coal jetting branch of control subelement 3111 control cuts out, and judges that in first judgment sub-unit 3112 the coal injection cutting valve of these coal jetting branch cuts out when putting in place, controls the purging trip valve of this coal jetting branch and opens.Warning subelement 3113 is judged in first judgment sub-unit 3112 that the coal injection cutting valve of these coal jetting branch cuts out and is carried out fault alarm when not in place.
Referring to Fig. 4, second control unit 312 comprises second control subelement 3121, second judgment sub-unit 3122 and the warning subelement 3123.The second control subelement 3121 is connected with second judgment sub-unit 3122 respectively with warning subelement 3123.Second judgment sub-unit 3122 judges whether the purge time of this coal jetting branch finishes, judges that the purging trip valve of this coal jetting branch cuts out whether to put in place and judge that this coal jetting branch coal injection cutting valve is opened whether puts in place.
When the second control subelement 3121 judges that in second judgment sub-unit 3122 purge time of this coal jetting branch has finished, control this coal jetting branch and get into the coal powder injection state, control the purging trip valve of coal jetting branch automatically and close; Judge that in second judgment sub-unit 3122 the purging trip valve of these coal jetting branch cuts out when putting in place, control the coal injection cutting valve of this coal jetting branch and open; Judge that in second judgment sub-unit 3122 these coal jetting branch coal injection cutting valves open when putting in place, control this coal jetting branch coal powder injection.Warning subelement 3123 judges that in second judgment sub-unit purging trip valve of this coal jetting branch cuts out when not putting in place, carries out fault alarm; Judge that in second judgment sub-unit 3122 these coal jetting branch coal injection cutting valves do not open when putting in place, carry out fault alarm.
Below in conjunction with a specific embodiment system shown in Figure 1 is set forth in detail.
Participate in Fig. 5, the pulverized coal injection dispenser system comprises that divider, 1 coal powder injection be responsible for coal injection cutting valve VA0,1 coal powder injection and be responsible for and purge trip valve VB0,20 coal jetting branch, 20 coal jetting branch coal injection cutting valve VA1 ~ VA20,20 coal jetting branch and purge trip valve VB1 ~ VB20,20 and survey stifled appearance and unit (not shown).Coal dust has been distributed to 20 spray guns uniformly at the divider place.In the winding-up process, have the situation that coal jetting branch stops up; If do not make coal jetting branch unimpeded fast; Not only can influence blast-furnace roasting distributes; And can burn spray gun, and at this moment just leaning on coal jetting branch to stop up proofing unit and detect its stopping state, the valve of controlling corresponding coal jetting branch by unit then purges.Every coal jetting branch all has a blowing valve, and a purging trip valve purges trip valve during normal coal powder injection and cuts out, and the coal injection cutting valve is opened.During purging, the coal injection cutting valve cuts out, and purges trip valve and opens.When purging state and coal powder injection state switched, first shut-down purge trip valve purged and opens the coal injection cutting valve again after the trip valve pass puts in place.When coal powder injection state and purging state switch, close the coal injection cutting valve earlier, the coal injection cutting valve is opened the purging trip valve after closing and putting in place again.
Fig. 6 is based on the flow process of the anti-blocking control of coal jetting branch that pulverized coal injection dispenser system shown in Figure 5 carries out, and at first carries out the initialize setting, confirms the purge time of cycle purge cycles and each coal jetting branch by module 4 is set.After starting cycle purge, when a plurality of coal jetting branch were begun to carry out cycle purge, whether the time of carrying out the cycle of cycle purge began to judge by judge module 30.If the time in the cycle of cycle purge, then system begins successively 20 coal jetting branch to be purged from the 1# coal jetting branch.Judge by judge module 30 whether the 1# coal jetting branch drops into automatic coal powder injection state; Dropped into automatic coal powder injection state if judge the 1# coal jetting branch; Then close by the coal injection cutting valve of the first control subelement, 3111 control 1# coal jetting branch; And after first judgment sub-unit 3112 judged that the coal injection cutting valve pass of 1# coal jetting branch puts in place, control purged trip valve and opens, and transfers the purging state to.When the second control subelement 3121 judged that in second judgment sub-unit 3122 purge time of 1# coal jetting branch has finished, control 1# coal jetting branch got into the coal powder injection state, controls the purging trip valve of coal jetting branch automatically and closes; Judge that in second judgment sub-unit 3122 the purging trip valve of 1# coal jetting branch cuts out when putting in place, the coal injection cutting valve of the second control subelement, 3121 control 1# coal jetting branch is opened; Judge that in second judgment sub-unit 3122 1# coal jetting branch coal injection cutting valves open when putting in place, the 3121 control 1# coal jetting branch coal powder injections of the second control subelement get into the coal powder injection state.After judge module 30 confirms that the purging trip valve cuts out, the purging program that then gets into the 2# coal jetting branch.If the 1# coal jetting branch is not at auto state; Then the 1# coal jetting branch maintains the original state constant; Directly skip the purging program that 1# coal powder injection straight tube gets into the 2# coal jetting branch, if the failsafe valve of 1# coal jetting branch then report to the police and skip this arm simultaneously directly gets into the purging program of 2# coal jetting branch.In like manner, 2# ~ 20# coal jetting branch all purges by such scheme successively, after the 20th coal jetting branch purges end; One of then whole divider coal jetting branch purges loop ends, is in waiting status this moment, after the cycle purge end of setting period; Then get into the cycle purge of next round; Again begin to judge from the l# coal jetting branch to purge, reciprocal successively, go round and begin again.
Be illustrated in figure 4 as the control flow when occurring stopping up warning, when in the cycle purge process, having coal jetting branch to stop up warning, then immediate precedence purges until stopping up the disappearance of reporting to the police this coal jetting branch, and the purging order of other coal jetting branch is constant.With the 1# coal jetting branch is example, if the 1# coal jetting branch has dropped into auto state and at the coal powder injection state, occurs stopping up when reporting to the police as the 1# coal jetting branch; Control the coal injection cutting valve of corresponding coal jetting branch and close, purge trip valve and open, transfer the purging state immediately to; After stopping up the end of reporting to the police; Then control the purging trip valve of corresponding coal jetting branch and close, the coal injection cutting valve is opened, and transfers the coal powder injection state to.In like manner, 2# ~ 20# pci extension pipe plug stops up to report to the police and all handles by such scheme.
According to what the utility model provided pulverized coal injection divider coal jetting branch is adopted the system of cycle purge; Can significantly reduce the plugging rate of coal jetting branch; Stablize the homogeneity of blast-furnace tuyere injecting coal quantity, reduce operator's in the production process working strength, improve automatization level; Powerful guarantee the safety of producing, for the blast furnace stable smooth operation creates conditions.
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (10)
1. the anti-blocking system of bf coal injection system divider coal jetting branch is characterized in that, comprising:
Divider, a plurality of coal jetting branch, unit; Said divider is connected with said a plurality of coal jetting branch respectively with unit.
2. system according to claim 1 is characterized in that, also comprises:
Module is set, and the said module that is provided with is connected with said unit.
3. system according to claim 2 is characterized in that, said unit comprises:
Judge module, control module;
Said judge module is connected with control module.
4. system according to claim 3 is characterized in that, said control module comprises:
First control unit, second control unit;
Said first control unit and second control unit are connected with said judge module respectively.
5. system according to claim 4 is characterized in that, said first control unit comprises:
First control subelement, first judgment sub-unit and the warning subelement;
The said first control subelement is connected with said first judgment sub-unit respectively with said warning subelement.
6. system according to claim 4 is characterized in that, said second control unit comprises:
Second control subelement, second judgment sub-unit and the warning subelement;
The said second control subelement is connected with said second judgment sub-unit respectively with said warning subelement.
7. according to each described system of claim 1-6, it is characterized in that, also comprise:
Appearance is blocked up in a plurality of surveys, and the stifled appearance of each said survey is arranged in each coal jetting branch;
Alarm module is reported to the police when each said coal jetting branch takes place to stop up.
8. system according to claim 7 is characterized in that:
Each said coal jetting branch is provided with the coal injection cutting valve and purges trip valve.
9. system according to claim 8 is characterized in that, also comprises:
The coal injection cutting valve is responsible in coal powder injection and the purging trip valve is responsible in coal powder injection; The coal injection cutting valve is responsible in said coal powder injection and coal powder injection person in charge purging trip valve is arranged at the said coal powder injection person in charge.
10. system according to claim 9 is characterized in that:
The number of said coal jetting branch is 16-40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202400570U CN202208732U (en) | 2011-07-08 | 2011-07-08 | Distributor adopted anti-blocking control system for coal injection branch pipes in blast furnace coal injection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202400570U CN202208732U (en) | 2011-07-08 | 2011-07-08 | Distributor adopted anti-blocking control system for coal injection branch pipes in blast furnace coal injection system |
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| CN202208732U true CN202208732U (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202400570U Expired - Fee Related CN202208732U (en) | 2011-07-08 | 2011-07-08 | Distributor adopted anti-blocking control system for coal injection branch pipes in blast furnace coal injection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019157148A (en) * | 2018-03-07 | 2019-09-19 | Ｊｆｅスチール株式会社 | Pulverized coal injection method to blast furnace |
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2011
- 2011-07-08 CN CN2011202400570U patent/CN202208732U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019157148A (en) * | 2018-03-07 | 2019-09-19 | Ｊｆｅスチール株式会社 | Pulverized coal injection method to blast furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20120708 |