CN103420052B - Program-controlled coal feeding device for raw coal bunker - Google Patents
Program-controlled coal feeding device for raw coal bunker Download PDFInfo
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- CN103420052B CN103420052B CN201310359402.6A CN201310359402A CN103420052B CN 103420052 B CN103420052 B CN 103420052B CN 201310359402 A CN201310359402 A CN 201310359402A CN 103420052 B CN103420052 B CN 103420052B
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- coal
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- 239000003245 coal Substances 0.000 title claims abstract description 146
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 34
- 238000010926 purge Methods 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 11
- 239000002817 coal dust Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 abstract 2
- 239000007921 spray Substances 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a program-controlled coal feeding device of a raw coal bunker, which comprises the raw coal bunker, wherein the lower part of the raw coal bunker is a conical section, a smooth lining plate is paved on the inner wall of the conical section, and a coal feeder is correspondingly arranged below a discharge hole at the bottom end of the conical section; a plurality of hot nitrogen purging pipelines are annularly arranged on the outer wall of the conical section from top to bottom at intervals, each hot nitrogen purging pipeline is connected to a hot nitrogen output pipeline of the coal injection station through a corresponding first pipeline and a first control valve arranged in the first pipeline, a plurality of spray pipes are arranged on each hot nitrogen purging pipeline at intervals around the circumference of the outer wall of the conical section, and each spray pipe penetrates through the outer wall of the conical section and the lining plate to be communicated with the interior of the conical section; a quick-opening hand hole is arranged at a discharge hole at the bottom end of the conical section; the raw coal bunker is provided with a monitoring device for monitoring the circulation state of the pulverized coal, and the monitoring device is electrically connected with a PLC automatic control device. When the blanking is not smooth, the PLC automatic control device automatically controls the valve of the hot nitrogen purging pipeline to be opened, and the inside of the raw coal bin is purged, so that the raw coal is smoothly blanked.
Description
Technical field
The invention relates to a kind of attendant equipment of iron-making coal-injecting, particularly relate to a kind of intellectuality and descend the program control lower device for coal of the run coal bin of coal smoothly.
Background technology
Pulverized coal injection is that ironmaking production reduces costs, iron increasing and coke saving the most directly and most effective method.The technological process of pulverized coal injection is: make raw coal enter little run coal bin by grab crane or forklift, then through meausring apparatus, raw coal is transported to large run coal bin by belt feeder, through meausring apparatus, raw coal is delivered to medium-speed pulverizer again to mill, qualified coal dust is delivered to Pulverized Coal Bin and stores after being separated by cloth bag collection machine, then passes through winding-up tank by pulverized coal injection to blast furnace.Run coal bin cone section is usually designed to taper shape, hyperbola, laid inside liner plate also arranges dredging machine, outer setting air bubble, vibrator, when the raw coal of run coal bin does not descend coal smoothly, raw coal vibrates by the equipment such as dredging machine, air bubble, vibrator that start, its direct motion blanking short.
Raw coal in run coal bin does not descend coal smoothly, causes primarily of sticky factors such as () raw coal high humidities, outstanding (raw coal freezes the factors such as block), stifled (factor such as bulk, the blocking of assorted material) three kinds of reasons.Rainy season, there was dampness in the air, and raw coal is all the time in moistening shape, and moor coal cannot carry out abundant natural seasoning, and raw coal very easily bonds, feed opening being blocked.Bulkhead installs vibrator, and after vibration, raw coal shakes tighter and tighter in feed opening position, and effect is undesirable, and because not descending raw coal to make the vibrator opening time longly cause vibrator motor scaling loss.Run coal bin outer wall is installed air bubble and carries out block clearing, divide upper and lower two-layer symmetry that two air bubbles are respectively installed, coal under the equal energy of raw coal installing air bubble position, but air bubble above position raw coal all unsettled not under, and move along with on the installation site of air bubble, raw coal overhead positions in run coal bin is up moved too, poor effect.Run coal bin inside install dredging machine, when material viscosity, high humidity, effect is bad, and install, difficult in maintenance, artificial blocking may be there is when equipment breaks down.
Winter climate is cold, enters factory's raw coal moisture generally more than 6%, and raw coal mainly exists to freeze block form, and make run coal bin hanging serious, mill output is low, and coal dust runs out of, and bulkhead installs vibrator, air bubble, effect is all undesirable.When run coal bin enters bulk raw coal, timber and iron block, blocking run coal bin discharging opening, cannot use mechanical equipment to solve putty problem.
In sum, in the prior art, outside the storehouse such as air cannon block clearer, vibration excitor, during the comparatively large and hanging of erecting equipment humidity of materials and viscosity in warehouse, then treatment effect is bad; Dredging machines etc. are installed to the vibration processing equipment in material bin, and when material viscosity, high humidity, effect is also bad, and install, difficult in maintenance, artificial blocking may be there is when equipment breaks down.And iron-making coal-injecting has the resources such as more rich hot nitrogen, aqueous vapor, and iron-making coal-injecting degree of automation is high, and requiring can coal under Real-Time Monitoring and the not direct motion of intelligent processing method run coal bin.How to make full use of the advantage of coal powder injection, the technical problem underlying making coal under the intelligent direct motion of run coal bin become the application will to solve.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes the program control lower device for coal of a kind of run coal bin, to overcome the defect of prior art.
Summary of the invention
The object of the present invention is to provide the program control lower device for coal of a kind of run coal bin, affect the problem of producing to solve the raw coal existed in prior art in the smooth blanking of run coal bin.
The object of the present invention is achieved like this, the program control lower device for coal of a kind of run coal bin, the program control lower device for coal of described run coal bin includes the run coal bin of tapered section of bottom, and described conical section inwall is equipped with smooth liner plate, and below the discharging opening of described conical section bottom, correspondence is provided with feeder; Described conical section outer wall from top to bottom spacer ring is provided with multiple hot nitrogen purging pipeline, each hot nitrogen purges pipeline is connected to coal powder injection station hot nitrogen delivery conduit by the first control cock arranged in corresponding first pipeline and the first pipeline, each hot nitrogen purges pipeline pressed on ring and is provided with multiple jet pipe around the described conical section outer wall circle spacing, and each jet pipe passes the inner conducting of described conical section outer wall and liner plate and conical section; Described conical section bottom discharge outlet is provided with opens hand hole soon; Described run coal bin is provided with the control monitor unit of monitoring coal dust circulation status, and described control monitor unit is electrically connected a PLC automatic control device.
In a better embodiment of the present invention, described each hot nitrogen purges ducted first control cock and is electrically connected described PLC automatic control device.
In a better embodiment of the present invention, described each hot nitrogen is purged pipeline and is welded on conical section outer wall by angle steel.
In a better embodiment of the present invention, described control monitor unit is be arranged on the weight sensor on run coal bin and/or feeder.
In a better embodiment of the present invention, purge between pipeline be provided with steamtraced piping at described conical section outer wall and multiple hot nitrogen, described steamtraced piping is close to conical section outer wall and is arranged; Described steamtraced piping includes the upper end circulating line being arranged on conical section upper end and the lower end circulating line being arranged on conical section discharge outlet, between described upper end circulating line and lower end circulating line and be that longitudinal interval is provided with multiple communicating pipe around described conical section outer wall, the two ends of each communicating pipe respectively conducting in upper end circulating line and lower end circulating line.
In a better embodiment of the present invention, described upper end circulating line is connected to the steam output circuit at coal powder injection station by the second control cock arranged in the second pipeline and the second pipeline; Described second control cock electrical connection PLC automatic control device; Described lower end circulating line is connected with freeing arrangement.
From the above mentioned, the program control lower device for coal of run coal bin of the present invention, Real-Time Monitoring is carried out by the blanking situation of PLC automatic monitoring controller to run coal bin, when occurring that blanking is not smooth, automatic control hot nitrogen purges the valve opening of pipeline, purge run coal bin inside, make the smooth blanking of raw coal, solving the raw coal existed in prior art thus affects the problem of producing in the smooth blanking of run coal bin.The program control lower device for coal of this run coal bin makes full use of the abundant hot nitrogen resource of existing iron-making coal-injecting system, makes coal powder injection degree of automation higher.The program control lower device for coal of this run coal bin has the advantage that cost is low, structure is simple, easy for installation, dredging scope is wide, practical.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1: be the structural representation of the program control lower device for coal embodiment one of run coal bin of the present invention.
Fig. 2: be the sectional structure schematic diagram at A-A place in Fig. 1.
Fig. 3: be the structural representation of the program control lower device for coal embodiment two of run coal bin of the present invention.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
Embodiment one
As shown in Figure 1 and Figure 2, the present invention proposes the program control lower device for coal 100 of a kind of run coal bin, the program control lower device for coal 100 of described run coal bin includes the run coal bin 1 of bottom tapered section 11, described conical section 11 inwall is equipped with smooth liner plate 2, and below the discharging opening of described conical section 11 bottom, correspondence is provided with feeder 3; Described conical section 11 outer wall from top to bottom spacer ring is provided with multiple hot nitrogen purging pipeline 4, and described each hot nitrogen purges pipeline 4 and is welded on conical section 11 outer wall by angle steel; Each hot nitrogen purges pipeline 4 is connected to coal powder injection station hot nitrogen delivery conduit (not shown) by the first control cock 42 arranged in corresponding first pipeline 41 and the first pipeline 41, as shown in Figure 2, each hot nitrogen purges on pipeline 4 and is provided with multiple jet pipe 43 around the described conical section 11 outer wall circle spacing, and each jet pipe 43 is through described conical section 11 outer wall and liner plate 2 and the inner conducting of conical section 11; Described conical section bottom discharge outlet is provided with opens hand hole 5 soon; Described run coal bin is provided with the control monitor unit (not shown) of monitoring coal dust circulation status, and described control monitor unit is electrically connected a PLC automatic control device (not shown); In the present embodiment, described control monitor unit is be arranged on the weight sensor on run coal bin and/or feeder; The first control cock 42 that described each hot nitrogen purges in pipeline 4 is electrically connected described PLC automatic control device.
In the present embodiment, by coal dust circulation status in control monitor unit Real-Time Monitoring run coal bin, when judging have the blocking features such as pulverized coal flow minimizing to occur, block clearing actuating signal is sent immediately to PLC automatic control device, PLC automatic control device controls corresponding first control cock 42 action automatically, system controls the first control cock 42 action purging pipeline place successively from bottom to top, open corresponding hot nitrogen purging pipeline 4 and carry out scavenging conduit work, solve sticky, the outstanding problem of coal dust, thus, the smooth blanking of run coal bin is made.If it is not smooth that system still detects coal dust circulation, then hand hole 5 is opened in unlatching soon fast, the blocking of coarse coal, assorted material at the bottom of process storehouse.
From the above mentioned, the present embodiment carries out Real-Time Monitoring by the blanking situation of PLC automatic monitoring controller to run coal bin, when occurring that blanking is not smooth, automatic control hot nitrogen purges the valve opening of pipeline, run coal bin inside is purged, make the smooth blanking of raw coal, solving the raw coal existed in prior art thus affects the problem of producing in the smooth blanking of run coal bin.The present embodiment makes full use of the abundant hot nitrogen resource of existing iron-making coal-injecting system, makes coal powder injection degree of automation higher.The program control lower device for coal of run coal bin of the present invention has the advantage that cost is low, structure is simple, easy for installation, dredging scope is wide, practical.
Embodiment two
The present embodiment is substantially identical with principle with the structure of embodiment one, the difference of itself and embodiment one is, as shown in Figure 3, purge between pipeline 4 be provided with steamtraced piping 6 at described conical section 11 outer wall and multiple hot nitrogen, described steamtraced piping 6 is close to conical section 11 outer wall and is arranged; Described steamtraced piping 6 includes the upper end circulating line 61 being arranged on conical section 11 upper end and the lower end circulating line 62 being arranged on conical section discharge outlet, between described upper end circulating line 61 and lower end circulating line 62 and be that longitudinal interval is provided with multiple communicating pipe 63 around described conical section 11 outer wall, the two ends of each communicating pipe 63 respectively conducting in upper end circulating line 61 and lower end circulating line 62; Described upper end circulating line 61 is connected to the steam output circuit (not shown) at coal powder injection station by the second control cock 612 arranged in the second pipeline 611 and the second pipeline 611; Described second control cock 612 is electrically connected PLC automatic control device; Described lower end circulating line 62 is connected with freeing arrangement 621.
In the north, especially in the winter time, raw coal mainly exists to freeze block form, makes run coal bin hanging serious.When control monitor unit judges have the blocking features such as pulverized coal flow minimizing to occur, PLC automatic control device automatically controls the second control cock 612 and opens, vapours is carried in steamtraced piping 6, be close to conical section 11 outer wall due to steamtraced piping 6 to arrange, the heat of steam can impel and freeze coal cinder quick-thawing in run coal bin, solves thus and to freeze the not smooth problem of blanking that the factors such as block cause due to raw coal.The liquid condensation water produced in steamtraced piping is discharged by described freeing arrangement 621.
The present invention compared with prior art tool has the following advantages and beneficial effect:
1, can timely and effectively the coal dust being attached to raw coal bulkhead be blown off, the problems such as solution coal dust is sticky, outstanding, stifled;
2, the program control lower device for coal cost of this run coal bin is low, structure is simple, easy for installation, dredging scope is wide, practical;
3, steamtraced piping, hot nitrogen purge pipeline and can to work long hours continuously use, owing to using the resource from coal powder injection station, can not increase cost;
4, intellectuality and automation can be realized, can grasp in real time, control coal breakage situation in run coal bin, make run coal bin descend coal smoothly, substantially do not need human intervention;
5, make full use of hot nitrogen, aqueous vapor resource that coal injection system is abundant, make coal powder injection degree of automation higher.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (6)
1. the program control lower device for coal of run coal bin, the program control lower device for coal of described run coal bin includes the run coal bin of tapered section of bottom, and described conical section inwall is equipped with smooth liner plate, and below the discharging opening of described conical section bottom, correspondence is provided with feeder; It is characterized in that: described conical section outer wall from top to bottom spacer ring is provided with multiple hot nitrogen purging pipeline, each hot nitrogen purges pipeline is connected to coal powder injection station hot nitrogen delivery conduit by the first control cock arranged in corresponding first pipeline and the first pipeline, each hot nitrogen purges pipeline pressed on ring and is provided with multiple jet pipe around the described conical section outer wall circle spacing, and each jet pipe passes the inner conducting of described conical section outer wall and liner plate and conical section; Described conical section bottom discharge outlet is provided with opens hand hole soon; Described run coal bin is provided with the control monitor unit of monitoring coal dust circulation status, and described control monitor unit is electrically connected a PLC automatic control device.
2. the program control lower device for coal of run coal bin as claimed in claim 1, is characterized in that: described each hot nitrogen purges ducted first control cock and is electrically connected described PLC automatic control device.
3. the program control lower device for coal of run coal bin as claimed in claim 1, is characterized in that: described each hot nitrogen is purged pipeline and is welded on conical section outer wall by angle steel.
4. the program control lower device for coal of run coal bin as claimed in claim 1, is characterized in that: described control monitor unit is be arranged on the weight sensor on run coal bin and/or feeder.
5. the program control lower device for coal of run coal bin as claimed in claim 1, is characterized in that: purge between pipeline at described conical section outer wall and multiple hot nitrogen and be provided with steamtraced piping, and described steamtraced piping is close to conical section outer wall and is arranged; Described steamtraced piping includes the upper end circulating line being arranged on conical section upper end and the lower end circulating line being arranged on conical section discharge outlet, between described upper end circulating line and lower end circulating line and be that longitudinal interval is provided with multiple communicating pipe around described conical section outer wall, the two ends of each communicating pipe respectively conducting in upper end circulating line and lower end circulating line.
6. the program control lower device for coal of run coal bin as claimed in claim 5, is characterized in that: described upper end circulating line is connected to the steam output circuit at coal powder injection station by the second control cock arranged in the second pipeline and the second pipeline; Described second control cock electrical connection PLC automatic control device; Described lower end circulating line is connected with freeing arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310359402.6A CN103420052B (en) | 2013-08-16 | 2013-08-16 | Program-controlled coal feeding device for raw coal bunker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310359402.6A CN103420052B (en) | 2013-08-16 | 2013-08-16 | Program-controlled coal feeding device for raw coal bunker |
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| CN103420052A CN103420052A (en) | 2013-12-04 |
| CN103420052B true CN103420052B (en) | 2015-02-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105080639A (en) * | 2015-09-08 | 2015-11-25 | 徐州市全中电力科技有限公司 | Coal pulverizer equipment |
| CN105258755B (en) * | 2015-10-20 | 2018-11-02 | 江苏大唐国际吕四港发电有限责任公司 | A kind of real-time survey calculation method of coal bunker coal amount |
| CN110143371A (en) * | 2019-05-27 | 2019-08-20 | 国家能源投资集团有限责任公司 | Main shaft loading equipment station hangs goods processing method and system |
| CN111189060B (en) * | 2020-02-26 | 2022-02-15 | 杭州特盈能源技术发展有限公司 | Method for conveying pulverized coal by oxygen-enriched air |
| CN114212559A (en) * | 2021-12-16 | 2022-03-22 | 中国铝业股份有限公司 | Blanking weighing method and blanking weighing device |
| CN114751103A (en) * | 2022-04-13 | 2022-07-15 | 华能(广东)能源开发有限公司汕头电厂 | Raw coal bunker ventilation anti-blocking device and method |
| CN115258431B (en) * | 2022-08-16 | 2023-08-08 | 国能宝清煤电化有限公司 | Raw coal bin body structure |
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| DE19701017A1 (en) * | 1997-01-14 | 1998-07-16 | Boehner Maria | Method of activating flow of bulk goods by compressed air or gas |
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| CN203450637U (en) * | 2013-08-16 | 2014-02-26 | 中冶京诚工程技术有限公司 | Program-controlled coal feeding device for raw coal bunker |
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2013
- 2013-08-16 CN CN201310359402.6A patent/CN103420052B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1729953A1 (en) * | 1989-05-10 | 1992-04-30 | М.Г.Гончаров | Hopper for semiloose materials |
| DE19701017A1 (en) * | 1997-01-14 | 1998-07-16 | Boehner Maria | Method of activating flow of bulk goods by compressed air or gas |
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