CN103420052A - Program-controlled coal discharging device for raw coal bunker - Google Patents
Program-controlled coal discharging device for raw coal bunker Download PDFInfo
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- CN103420052A CN103420052A CN2013103594026A CN201310359402A CN103420052A CN 103420052 A CN103420052 A CN 103420052A CN 2013103594026 A CN2013103594026 A CN 2013103594026A CN 201310359402 A CN201310359402 A CN 201310359402A CN 103420052 A CN103420052 A CN 103420052A
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Abstract
The invention relates to a program-controlled coal discharging device for a raw coal bunker. The program-controlled coal discharging device comprises a raw coal bunker of which the lower part is of a conical section; a smooth lining plate is paved on the inner wall of the conical section; a coal feeder is correspondingly arranged below a discharge opening of the bottom end of the conical section; a plurality of hot nitrogen gas purging pipelines are arranged on the outer wall of the conical section at intervals from top to bottom; each hot nitrogen gas purging pipeline is formed by connecting a corresponding first pipeline and a first control valve arranged in the first pipeline to a hot nitrogen gas output pipeline of a coal injection station; a plurality of injection pipes are arranged around the circumference of the conical section of the outer wall of the conical section at intervals on each hot nitrogen gas purging pipeline; each injection pipe penetrates through the outer wall of the conical section and the lining plate and is conducted with the inside of the conical section; a quick-open hand hole is formed in the discharge opening of the bottom end of the conical section; a monitoring device for monitoring the flowing state of pulverized coal is arranged on the raw coal bunker; the monitoring device is electrically connected with a PLC (Program Logic Controller) automatic control device; when the discharging is unsmooth, the PLC automatic control device automatically controls valves of the hot nitrogen gas purging pipelines to be opened for purging the inside of the raw coal bunker to enable raw coal to be smoothly discharged.
Description
Technical field
The invention relates to a kind of attendant equipment of iron-making coal-injecting, relate in particular to the program control lower device for coal of run coal bin that coal is descended in a kind of intellectuality smoothly.
Background technology
Pulverized coal injection is that ironmaking production reduces costs, iron increasing and coke saving the most directly and effective method.The technological process of pulverized coal injection is: by grab crane or forklift, make raw coal enter little run coal bin, then pass through meausring apparatus, belt feeder is transported to large run coal bin by raw coal, through meausring apparatus, raw coal being delivered to medium-speed pulverizer again mills, qualified coal dust is delivered to Pulverized Coal Bin after being separated by cloth bag collection machine and stores, then through the winding-up tank by pulverized coal injection to blast furnace.Run coal bin cone section is usually designed to taper shape, hyperbola, the laid inside liner plate also arranges dredging machine, and outer setting air bubble, vibrator, when the raw coal of run coal bin does not descend coal smoothly, the equipment such as dredging machine, air bubble, vibrator that start vibrate raw coal, short its direct motion blanking.
Raw coal in run coal bin not descend coal smoothly, mainly by sticky factors such as () raw coal high humidities, outstanding (raw coal freezes the factors such as piece), stifled (bulk, assorted expect the factors such as obstruction) three kinds of reasons, is caused.Rainy season, there was dampness in the air, and raw coal is moistening shape all the time, and the moor coal can't carry out abundant natural seasoning, and raw coal very easily bonds, feed opening being blocked.Vibrator is installed on bulkhead, and after vibration, raw coal shakes tighter and tighter in the feed opening position, and effect is undesirable, and because not descending raw coal to make the long vibrator motor scaling loss that causes of vibrator opening time.Air bubble is installed on the run coal bin outer wall and is carried out block clearing, divide upper and lower two-layer symmetry that two air bubbles respectively are installed, coal under the equal energy of raw coal that the air bubble position is installed, but the above position of air bubble raw coal all unsettled not under, and move on the installation site along with air bubble, raw coal overhead positions in run coal bin is up moved too, poor effect.At the inner dredging machine of installing of run coal bin, when material viscosity, high humidity, effect is bad, and installation, difficult in maintenance, when equipment breaks down, artificial obstruction may occur.
Winter climate cold, enter the former moisture content of coal of factory and generally surpass 6%, and raw coal mainly exists to freeze the piece form, makes the run coal bin hanging serious, and mill output is low, and coal dust runs out of, and vibrator is installed on bulkhead, air bubble, and effect is all undesirable.When run coal bin enters bulk raw coal, timber and iron block, stop up the run coal bin discharging opening, can't use mechanical equipment to solve the putty problem.
In sum, in the prior art, outside the storehouses such as air cannon block clearer, vibration excitor, treatment effect is bad during the large and hanging of erecting equipment humidity of materials and viscosity in warehouse; Dredging machines etc. are installed to the vibration processing equipment in material bin, and when material viscosity, high humidity, effect is also bad, and installation, difficult in maintenance, when equipment breaks down, artificial obstruction may occur.And iron-making coal-injecting has the resources such as more rich hot nitrogen, aqueous vapor, and the iron-making coal-injecting degree of automation is high, requires coal under energy Real-Time Monitoring and the not direct motion of intelligent processing method run coal bin.How to take full advantage of the advantage of coal powder injection, make coal under the intelligent direct motion of run coal bin become the technical problem underlying that the application will solve.
Thus, the inventor, by means of being engaged in experience and the practice of 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, to solve the raw coal existed in prior art, in the smooth blanking of run coal bin, affect the problem of producing.
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 described conical section bottom discharging opening below correspondence is provided with feeder; Described conical section outer wall from top to bottom spacer ring is provided with a plurality of hot nitrogens purging pipelines, the first control cock that each hot nitrogen purging pipeline arranges in corresponding the first pipeline and the first pipeline is connected in the hot nitrogen delivery conduit at coal powder injection station, each hot nitrogen purges the pipeline pressed on ring and is provided with a plurality of jet pipes around the described conical section outer wall circle spacing, and each jet pipe is through described conical section outer wall and liner plate and the inner conducting of conical section; Discharging opening place, described conical section bottom is equipped with and opens soon hand hole; 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 to a PLC automatic control device.
In a better embodiment of the present invention, described each hot nitrogen purges ducted the first control cock and is electrically connected to described PLC automatic control device.
In a better embodiment of the present invention, described each hot nitrogen purges pipeline and is welded on the conical section outer wall by angle steel.
In a better embodiment of the present invention, described control monitor unit is the weight sensor be arranged on run coal bin and/or feeder.
In a better embodiment of the present invention, be provided with steamtraced piping between described conical section outer wall and a plurality of hot nitrogen purging pipeline, described steamtraced piping is close to the setting of conical section outer wall; Described steamtraced piping includes the upper end circulating line that is arranged on the conical section upper end and is arranged on the lower end circulating line at conical section discharging opening place, between described upper end circulating line and lower end circulating line and be longitudinal interval around described conical section outer wall and be provided with a plurality of communicating pipes, 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, the second control cock that described upper end circulating line arranges in the second pipeline and the second pipeline is connected in the steam output pipe road at coal powder injection station; Described the second control cock is electrically connected to the 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, by the PLC automatic monitoring controller, the blanking situation of run coal bin is carried out to Real-Time Monitoring, when occurring that blanking is not smooth, automatically control the valve opening that hot nitrogen purges pipeline, run coal bin inside is purged, make the smooth blanking of raw coal, solving thus the raw coal existed in prior art 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 takes full advantage of the existing abundant hot nitrogen resource of iron-making coal-injecting system, makes the coal powder injection degree of automation higher.The program control lower device for coal of this run coal bin has advantages of that cost is low, simple in structure, easy for installation, the dredging scope is wide, practical.
The accompanying drawing explanation
The following drawings only is intended to the present invention is done and schematically illustrates 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 mono-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 bis-of run coal bin of the present invention.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing explanation the specific embodiment of the present invention.
Embodiment mono-
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 tapered section 11 of bottom, described conical section 11 inwalls are equipped with smooth liner plate 2, and described conical section 11 discharging opening below, bottom correspondences are provided with feeder 3; Described conical section 11 outer walls from top to bottom spacer ring are provided with a plurality of hot nitrogens purging pipelines 4, and described each hot nitrogen purges pipeline 4 and is welded on conical section 11 outer walls by angle steel; The first control cock 42 that each hot nitrogen purging pipeline 4 arranges in corresponding the first pipeline 41 and the first pipeline 41 is connected in the hot nitrogen delivery conduit (not shown) at coal powder injection station, as shown in Figure 2, each hot nitrogen purges on pipeline 4 and is provided with a plurality of jet pipes 43 around the described 11 outer wall circle spacings of conical section, and each jet pipe 43 is through described conical section 11 outer walls and liner plate 2 and the inner conducting of conical section 11; Discharging opening place, described conical section bottom is equipped with and opens soon hand hole 5; 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 to a PLC automatic control device (not shown); In the present embodiment, described control monitor unit is the weight sensor be arranged on run coal bin and/or feeder; The first control cock 42 that described each hot nitrogen purges in pipeline 4 is electrically connected to described PLC automatic control device.
In the present embodiment, by coal dust circulation status in control monitor unit Real-Time Monitoring run coal bin, while having the blocking features such as pulverized coal flow minimizing to occur when judgement, send the block clearing actuating signal to the PLC automatic control device immediately, the PLC automatic control device is controlled corresponding the first control cock 42 actions automatically, system is controlled the first control cock 42 actions that purge the 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, make the smooth blanking of run coal bin.If system still detects coal dust, circulation is not smooth, and hand hole 5 is opened in unlatching soon fast, the obstruction of coarse coal, assorted material at the bottom of the processing storehouse.
From the above mentioned, the present embodiment carries out Real-Time Monitoring by the PLC automatic monitoring controller to the blanking situation of run coal bin, when occurring that blanking is not smooth, automatically control the valve opening that hot nitrogen purges pipeline, run coal bin inside is purged, make the smooth blanking of raw coal, solving thus the raw coal existed in prior art affects the problem of producing in the smooth blanking of run coal bin.The present embodiment takes full advantage of the existing abundant hot nitrogen resource of iron-making coal-injecting system, makes the coal powder injection degree of automation higher.The program control lower device for coal of run coal bin of the present invention has advantages of that cost is low, simple in structure, easy for installation, the dredging scope is wide, practical.
Embodiment bis-
Structure and the principle of the present embodiment and embodiment mono-are basic identical, the difference of itself and embodiment mono-is, as shown in Figure 3, between described conical section 11 outer walls and a plurality of hot nitrogen purging pipeline 4, be provided with steamtraced piping 6, described steamtraced piping 6 is close to conical section 11 outer wall settings; Described steamtraced piping 6 includes the upper end circulating line 61 that is arranged on conical section 11 upper ends and the lower end circulating line 62 that is arranged on conical section discharging opening place, between described upper end circulating line 61 and lower end circulating line 62 and be longitudinal interval around described conical section 11 outer walls and be provided with a plurality of communicating pipes 63, the two ends of each communicating pipe 63 respectively conducting in upper end circulating line 61 and lower end circulating line 62; The second control cock 612 that described upper end circulating line 61 arranges in the second pipeline 611 and the second pipeline 611 is connected in the steam output pipe road (not shown) at coal powder injection station; Described the second control cock 612 is electrically connected to the 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 the piece form, makes the run coal bin hanging serious.When control monitor unit judges that the blocking features such as the pulverized coal flow minimizing is arranged occur, the PLC automatic control device is automatically controlled the second control cock 612 and is opened, carry vapours in steamtraced piping 6, because steamtraced piping 6 is close to conical section 11 outer walls settings, the heat of steam can impel and freeze the coal cinder quick-thawing in run coal bin, solves thus the not smooth problem of blanking that factors such as freezing piece due to raw coal causes.The liquid condensation water produced in steamtraced piping is discharged by described freeing arrangement 621.
The present invention compared with prior art has following advantage and beneficial effect:
1, can timely and effectively the coal dust that is attached to the raw coal bulkhead be blown off, solve the problems such as coal dust glues, hangs, blocks up;
2, the program control lower device for coal cost of this run coal bin is low, simple in structure, easy for installation, the dredging scope is wide, practical;
3, steamtraced piping, hot nitrogen purge pipeline uses that can work long hours continuously, due to use be the resource from the coal powder injection station, can not increase cost;
4, can realize intellectuality and automation, can grasp in real time, control coal breakage situation in run coal bin, make run coal bin descend smoothly coal, substantially not need human intervention;
5, take full advantage of the abundant hot nitrogen of coal injection system, aqueous vapor resource, make the coal powder injection degree of automation higher.
The foregoing is only the schematic specific embodiment of the present invention, not in order to limit scope of the present invention.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification, 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 described conical section bottom discharging opening below correspondence is provided with feeder; It is characterized in that: described conical section outer wall from top to bottom spacer ring is provided with a plurality of hot nitrogens purging pipelines, the first control cock that each hot nitrogen purging pipeline arranges in corresponding the first pipeline and the first pipeline is connected in the hot nitrogen delivery conduit at coal powder injection station, each hot nitrogen purges the pipeline pressed on ring and is provided with a plurality of jet pipes around the described conical section outer wall circle spacing, and each jet pipe is through described conical section outer wall and liner plate and the inner conducting of conical section; Discharging opening place, described conical section bottom is equipped with and opens soon hand hole; 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 to a PLC automatic control device.
2. the program control lower device for coal of run coal bin as claimed in claim 1, it is characterized in that: described each hot nitrogen purges ducted the first control cock and is electrically connected to 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 purges pipeline and is welded on the conical section outer wall by angle steel.
4. the program control lower device for coal of run coal bin as claimed in claim 1, it is characterized in that: described control monitor unit is the weight sensor be arranged 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 and be provided with steamtraced piping at described conical section outer wall and a plurality of hot nitrogen, described steamtraced piping is close to the setting of conical section outer wall; Described steamtraced piping includes the upper end circulating line that is arranged on the conical section upper end and is arranged on the lower end circulating line at conical section discharging opening place, between described upper end circulating line and lower end circulating line and be longitudinal interval around described conical section outer wall and be provided with a plurality of communicating pipes, 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, it is characterized in that: the second control cock that described upper end circulating line arranges in the second pipeline and the second pipeline is connected in the steam output pipe road at coal powder injection station; Described the second control cock is electrically connected to the 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 discharging device for raw coal bunker |
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| CN201310359402.6A CN103420052B (en) | 2013-08-16 | 2013-08-16 | Program-controlled coal discharging device for raw coal bunker |
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| CN103420052B CN103420052B (en) | 2015-02-11 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080639A (en) * | 2015-09-08 | 2015-11-25 | 徐州市全中电力科技有限公司 | Coal pulverizer equipment |
| CN105258755A (en) * | 2015-10-20 | 2016-01-20 | 江苏大唐国际吕四港发电有限责任公司 | Coal bunker amount real-time measuring and calculating method |
| 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 |
| CN111189060A (en) * | 2020-02-26 | 2020-05-22 | 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 |
| CN115258431A (en) * | 2022-08-16 | 2022-11-01 | 国能宝清煤电化有限公司 | Raw coal bin body structure |
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| 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 |
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| 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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