CN104085625A - Full-automatic coal bunker water cannon dredging device - Google Patents
Full-automatic coal bunker water cannon dredging device Download PDFInfo
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- CN104085625A CN104085625A CN201410321683.0A CN201410321683A CN104085625A CN 104085625 A CN104085625 A CN 104085625A CN 201410321683 A CN201410321683 A CN 201410321683A CN 104085625 A CN104085625 A CN 104085625A
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Abstract
The invention relates to a full-automatic coal bunker water cannon dredging device which is particularly used for dredging blockage inside a coal bunker through pressurized water, and belongs to the technical field of coal bunker devices. The full-automatic coal bunker water cannon dredging device comprises a plurality of spray nozzles, a water conveying pipeline, a water tank and a control cabinet. All the spray nozzles are connected with a main water conveying pipe through branch water conveying pipes. The main water conveying pipe is connected with the water tank. An electromagnetic valve is arranged on each branch water conveying pipe. A pressurization pump is arranged between the water tank and the water conveying pipeline. A water level indicator is arranged in the water tank. A water supplementation valve is arranged on the water inlet of the water tank. A PLC and a time relay are arranged in the control cabinet. The PLC is electrically connected with the water supplementation valve, the water level indicator, the pressurization pump and the electromagnetic valve. By means of the full-automatic coal bunker water cannon dredging device, potential safety hazards caused by blockage and coal shortage in running of a mill can be eliminated, the fuel oil self-injection situation which is caused by coal shortage to the mill is reduced, unsafe factors can be avoided as much as possible for running of a unit, and therefore safety, reliability and economical efficiency of running of the unit are greatly improved; the advantages of being safe, saving energy and being low in cost and good in dredging effect are achieved, and no influence on coal conveying is produced.
Description
Technical field
The present invention relates to a kind of full automaticity coal bunker water cannon dredger, by stopping up in pressure (hydraulic) water coal bunker dredging, belong to coal bunker equipment technical field specifically.
Background technology
At present, the raw coal in coal-burning power plant's coal bunker starts or the latch up phenomenon all there will be in various degree in service at pulverized coal preparation system, concentrates to occur in coal bunker bottom and shrink position, the coal bunker coal spout place to feeder.It is main causes the obstruction of coal dust passage because coal dust becomes block because overstocking knot tying, is all difficult to fragmentation with spade.Coal dust obstruction has not only affected Ball Mill Pulverizer System and has normally started operation, also affect unit and meet the ability of peak tape splicing load, increasing mill group starts with oil, and the disconnected coal of the obstruction that is in operation causes coal-grinding unit tripping also to have influence on the safe operation of unit, reduce electric energy generated, cause no small economic loss.
In the ash content of the reason of raw coal obstruction in coal bunker and the moisture content of coal bunker structure, coal, coal and composition, coal bunker, other characteristic of length of the halt length and coal is relevant.No matter which kind of reason causes the mobile obstruction of raw coal in coal bunker, have be can be qualitatively at 2, the one, it is a kind of physical phenomenon that the wizened knot tying of raw coal results in blockage, as dry mud in rice terrace, picture is like iron-plated, after chance water, be mud bar, after water is dry, knot tying becomes the same stiff mud bar of iron plate piece again, and cob brick is exactly this principle; The 2nd, coal is not that Uniform Flow, particularly a large portion are to be attached on coal bunker wall immobilisingly in coal bunker, rests on for a long time in coal bunker, moisture in coal constantly evaporates, and more dry harder after knot tying, coal cinder is increasing, circulation passage is more and more less, finally causes stopping up.
In prior art, for the obstruction of coal bunker dredging, several ways below general employing: the one, adopt electronic rapping apparatus, electronic rapping apparatus is fixed on to a certain position of coal bunker, dredge in outside in rapping mode, the coal of hundreds of tons is being pressed to coal bunker, fixing rapping dredging effect is limited; The 2nd, adopt hydraulic pressure dredger, pushed away to take off by hydraulic pressure draw-bar and form dredging passage, its deficiency is that pull bar pushes away that to take off stroke be to fix, the raw coal knot tying situation of non-rod stroke is all the more serious, hydraulic oil system maintenance workload is large simultaneously, pull bar does not push away to take off in the time of operation also increases coal resistance to flow, and effect is also undesirable; The 3rd, adopt air bubble dredger, purge by force knot tying coal cinder by pressurized air, there is to certain effect coal bunker part, but air is in the dump of coal bunker compacting, releases pressure energy without direction, still can not meet the object of Quick dredging startup mill group.
Summary of the invention
The object of the invention is to overcome above-mentioned weak point, thereby provide a kind of full automaticity coal bunker water cannon dredger, can solve fired power generating unit coal pulverizer inlet and cause trip phenomenon because stopping up disconnected coal, reduction unit is driven mill and is helped heating oil, strengthen unit and meet peak on-load ability, reduce to stop up disconnected coal tripping operation because of mill group and cause the dangerous phenomenon of unit.
According to technical scheme provided by the invention, full automaticity coal bunker water cannon dredger comprises multiple nozzles, hydraulic pipeline, water tank and control box, it is characterized in that: each nozzle is in charge of common connection water delivery house steward by water delivery, and water delivery house steward connects water tank; Described water delivery is in charge of and is provided with electromagnetic valve, between water tank and hydraulic pipeline, is provided with boost pump; In water tank, be provided with water-level gauge, water tank inlet is provided with water compensating valve; In control box, be provided with PLC controller, PLC is electrically connected with water compensating valve, water-level gauge, boost pump and electromagnetic valve.
Further, multiple nozzles are evenly distributed on coal bunker feeding port surface twist.
Further, the internal diameter of nozzle is less than the internal diameter that water delivery is in charge of.
Further, nozzle and horizontal surface keep included angle A, and the scope of A is 30 ° ~ 60 °.
Further, water delivery house steward is provided with check valve.
Compared with the prior art the present invention has the following advantages:
The present invention can eliminate mill and organize the potential safety hazard that the disconnected ribbing of obstruction in service is come, and reduces mill group and hauls oneself willingly into situation because of disconnected coal fuel oil, avoids as far as possible unit operation safety hazard, thereby greatly improves unit operation safety, reliability, economy; Energy-saving safe, cost is lower, and dredging effect is better, and coal charge is carried and do not exerted an influence.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is nozzle arrangements schematic diagram.
Description of reference numerals: 1-coal bunker feeding port, 2-nozzle, 3-water delivery house steward, 4-boost pump, 5-water tank, 6-electromagnetic valve, 7-water delivery are in charge of, 8-control box, 9-water-level gauge, 10-water compensating valve, 11-check valve.
Detailed description of the invention
The present invention is below further described in connection with the embodiment in accompanying drawing:
As shown in Figure 1 and 2, the present invention mainly comprises multiple nozzles 2, hydraulic pipeline 3 and water tank 5, multiple nozzles 2 are evenly distributed on coal bunker feeding port 1 surface twist, each nozzle 2 is in charge of 7 common connection water delivery house stewards 3 by water delivery, water delivery house steward 3 connects water tank 5, water in water tank 5 is in charge of 7 by water delivery house steward 3, water delivery and is delivered in each nozzle 2, is then ejected into coal bunker feeding port 1 inside face by nozzle 2, and the coal charge stopping up is washed away to block clearing.
Described water delivery house steward 3 is provided with check valve 11.Described water delivery is in charge of 7 and is provided with electromagnetic valve 6, and electromagnetic valve 6 is controlled water delivery and is in charge of 7 opening and closing.
In order to allow the water in nozzle 2 keep certain pressure, between described water tank 5 and hydraulic pipeline 3, be provided with boost pump 4, boost pump 4 guarantees that the water that water tank 5 arrives in nozzle 2 keeps pressure stability.Meanwhile, as shown in Figure 2, the internal diameter of nozzle 2 is less than water delivery and is in charge of 7 internal diameter, and while making water pass through nozzle 2, pressure increases.
In order to allow nozzle 2 form good scouring effect to coal bunker feeding port 1 inside face, described nozzle 2 and horizontal surface keep included angle A, and the scope of A is 30 ° ~ 60 °.
In order to keep the uninterrupted water supply in water tank 5, in water tank 5, be provided with water-level gauge 9, water tank 5 water inlets are provided with water compensating valve 10.Water-level gauge 9 is measured the interior elevation of water surface of water tank 5, and water compensating valve 10 is controlled the opening and closing of filling pipe water inlet.
The present invention also comprises control box 8, is provided with PLC controller in control box 8, and PLC controller is electrically connected with water compensating valve, water-level gauge, boost pump 4 and electromagnetic valve 6.The disconnected coal signal sending to coal chute of coal feeder when coal bunker leads to coal mill, also lead to control box 8, the PLC controller control boost pump 4 in control box 8 is worked simultaneously, and the water pressurization in water tank 5 enters in water delivery house steward 3, the water of pressurization sprays by nozzle 2, and the coal charge stopping up is dredged.In the time that the interior water level of water-level gauge measurement water tank 5 is too low, PLC controller control water compensating valve is to the interior moisturizing of water tank 5.
The present invention utilizes the infiltration natural energy of water to make knot tying coal cinder loose, just as the dry mud chance yew of rice terrace falls apart, stiff coal cinder is met water and loose, the 2nd, water is naturally dirty in vertical passage, coal under loose is together flowed downward by water lubricating, accelerate coal bunker and lead to feeder to coal mill coal supply, the 3rd, the localized ejection water yield is little with the ratio of coal flow, does not affect coal mill and normally works.In the time of coal bunker blocking, by disconnected coal signal, very first time automatic switching the present invention.PLC controller control boost pump work in control box, the water pressurization in water tank enters in water delivery house steward, and the electromagnetic valve that each water delivery is in charge of is opened, and the water of pressurization sprays by nozzle, and the coal charge stopping up is dredged.In the time that water-level gauge measures in water tank that water level is too low, PLC controller control water compensating valve is to moisturizing in water tank.The present invention can eliminate mill and organize the potential safety hazard that the disconnected ribbing of obstruction in service is come, and reduces mill group and hauls oneself willingly into situation because of disconnected coal fuel oil, avoids as far as possible unit operation safety hazard.Thereby greatly improve unit operation safety, reliability, economy.
Claims (5)
1. a full automaticity coal bunker water cannon dredger, comprise multiple nozzles (2), hydraulic pipeline (3), water tank (5) and control box (8), it is characterized in that: each nozzle (2) is in charge of (7) by water delivery and is jointly connected water delivery house steward (3), water delivery house steward (3) connects water tank (5); Described water delivery is in charge of (7) and is provided with electromagnetic valve (6), between water tank (5) and hydraulic pipeline (3), is provided with boost pump (4); In water tank (5), be provided with water-level gauge (9), water tank (5) water inlet is provided with water compensating valve (10); Control box is provided with PLC controller in (8), and PLC controller is electrically connected with water compensating valve (10), water-level gauge (9), boost pump (4) and electromagnetic valve (6).
2. full automaticity coal bunker water cannon dredger as claimed in claim 1, is characterized in that: described multiple nozzles (2) are evenly distributed on coal bunker feeding port (1) surface twist.
3. full automaticity coal bunker water cannon dredger as claimed in claim 1, is characterized in that: the internal diameter of described nozzle (2) is less than the internal diameter that (7) are in charge of in water delivery.
4. full automaticity coal bunker water cannon dredger as claimed in claim 1, is characterized in that: the angle of described nozzle (2) and horizontal surface is A, and the scope of A is 30 ° ~ 60 °.
5. full automaticity coal bunker water cannon dredger as claimed in claim 1, is characterized in that: described water delivery house steward (3) is provided with check valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410321683.0A CN104085625A (en) | 2014-07-07 | 2014-07-07 | Full-automatic coal bunker water cannon dredging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410321683.0A CN104085625A (en) | 2014-07-07 | 2014-07-07 | Full-automatic coal bunker water cannon dredging device |
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| CN104085625A true CN104085625A (en) | 2014-10-08 |
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| CN201410321683.0A Pending CN104085625A (en) | 2014-07-07 | 2014-07-07 | Full-automatic coal bunker water cannon dredging device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654342A (en) * | 2015-01-28 | 2015-05-27 | 江苏西铭节能环保科技有限公司 | Coal blending combustion anti-blocking device and coal blending combustion method |
| CN108423326A (en) * | 2018-03-09 | 2018-08-21 | 广州港新沙港务有限公司 | A kind of anti-blocking device of coal chute |
| CN111056154A (en) * | 2020-02-11 | 2020-04-24 | 郑州大学 | Hydraulic coal bunker arch breaking device |
| CN113602692A (en) * | 2021-07-19 | 2021-11-05 | 苏州西热节能环保技术有限公司 | Sludge breaking device and sludge discharging system |
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| CN2633806Y (en) * | 2003-09-10 | 2004-08-18 | 周利庆 | Dredging device for coal bunker blocking water cannon |
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| CN202784425U (en) * | 2012-04-10 | 2013-03-13 | 杨安奇 | High pressure air force flow-assisting bin-cleaning device |
| CN203959036U (en) * | 2014-07-07 | 2014-11-26 | 无锡市华通环保设备有限公司 | Full automaticity coal bunker water cannon dredger |
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2014
- 2014-07-07 CN CN201410321683.0A patent/CN104085625A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5793828A (en) * | 1980-11-28 | 1982-06-11 | Kajima Corp | Choking preventing system for coal reservoir |
| CN2037356U (en) * | 1988-08-16 | 1989-05-10 | 刘源崚 | Coal storehouse arch-breaking device |
| JP2001180789A (en) * | 1999-12-27 | 2001-07-03 | Maezawa Ind Inc | Hopper and crusher with the hopper and hopper clogging prevention method |
| CN2633806Y (en) * | 2003-09-10 | 2004-08-18 | 周利庆 | Dredging device for coal bunker blocking water cannon |
| CN201545393U (en) * | 2009-10-30 | 2010-08-11 | 济南鲁盟电力科技发展有限公司 | Air cannon clean-up device |
| CN202784425U (en) * | 2012-04-10 | 2013-03-13 | 杨安奇 | High pressure air force flow-assisting bin-cleaning device |
| CN203959036U (en) * | 2014-07-07 | 2014-11-26 | 无锡市华通环保设备有限公司 | Full automaticity coal bunker water cannon dredger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654342A (en) * | 2015-01-28 | 2015-05-27 | 江苏西铭节能环保科技有限公司 | Coal blending combustion anti-blocking device and coal blending combustion method |
| CN108423326A (en) * | 2018-03-09 | 2018-08-21 | 广州港新沙港务有限公司 | A kind of anti-blocking device of coal chute |
| CN108423326B (en) * | 2018-03-09 | 2020-01-10 | 广州港集团有限公司 | Coal breakage pipe anti-blocking device |
| CN111056154A (en) * | 2020-02-11 | 2020-04-24 | 郑州大学 | Hydraulic coal bunker arch breaking device |
| CN111056154B (en) * | 2020-02-11 | 2022-02-08 | 郑州大学 | Hydraulic coal bunker arch breaking device |
| CN113602692A (en) * | 2021-07-19 | 2021-11-05 | 苏州西热节能环保技术有限公司 | Sludge breaking device and sludge discharging system |
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Application publication date: 20141008 |