CN2633806Y - Dredging device for coal bunker blocking water cannon - Google Patents
Dredging device for coal bunker blocking water cannon Download PDFInfo
- Publication number
- CN2633806Y CN2633806Y CN 03262751 CN03262751U CN2633806Y CN 2633806 Y CN2633806 Y CN 2633806Y CN 03262751 CN03262751 CN 03262751 CN 03262751 U CN03262751 U CN 03262751U CN 2633806 Y CN2633806 Y CN 2633806Y
- Authority
- CN
- China
- Prior art keywords
- coal
- water
- nozzle
- contracting
- contracting nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a dredging device for coal bunker blocking water cannon in a coal-fired plant, which comprises a special contracting nozzle 1 on an upper layer, a pressure gauge 2, an adjustment valve 3, a shutdown valve 4, a pressure water 5, a water transfer pipe 6 and a special contracting nozzle 7 on the lower layer. Two contracting nozzles 1 are arranged in offset (opposite) manner at a certain position on a lower cone 11 of the bunker above a coal gate plate door 10, one contracting nozzle 7 is arranged at a certain position on the coal drop tube 9 above a coal feeder 8, the pressure water 5 with pressure from 1.2 to 1.6 Mpa available in a power plant is used to spray into a coal layer after passed through the water transfer pipe 6, the shutdown valve 4, the adjustment valve 3 and the contracting nozzle 1 (or 7), and is penetrated quickly and peripherally to make the friction forces between a coal particle and a surface of the coal particle as well as between the coal particle and the inner wall of a corresponding position to reduce, the coal particle can be continuously dropped on the coal feeder to assure a powder milling system to operate stably and continuously, a water spraying capacity can be controlled by the structural dimension of the contracting nozzle and the water pressure in the front of the nozzle; the utility model has the advantages of simple system, easy operation, non-noise, small maintenance workload, low cost and operation expense.
Description
Technical field
The utility model relates to a kind of coal bunker coal breakage and stops up dredger, and particularly a kind of coal-burning power plant's coal bunker that is used for stops up the water cannon dredger.
Background technology
At present, all there is the disconnected coal phenomenon of obstruction in various degree in raw coal in coal-burning power plant's coal bunker when pulverized coal preparation system starts or in the operational process, the normal startup of generator set, the ability of on-load have according to plan not only been influenced, and the disconnected coal that is in operation also has influence on the safety of equipment, reduce electric energy generated, caused no small economic loss.
It is relevant that the reason that raw coal stops up in the coal bunker and structure, the raw coal of coal bunker contain other characteristic of the length of depositing the coal time in moisture, air-dried moisture, the coal bunker and raw coal.Stop up in order to dredge coal bunker, some power plant is adopted methods such as motor machine rapping, air bubble, or is adopted these methods simultaneously by artificial rapping coal spout.A coal bunker generally will be installed 6～8 air bubbles or motor machine rapping apparatus.Air bubble and mechanical vibrator can play certain vibration and loose effect to the coal cinder that bonds together, but because of fixing the installation site, the size of rapping power can not be controlled, and under the situation that coal bunker has stopped up, often result of use is not good; On the other hand, the maintenance workload of air bubble and mechanical vibrator device is big, thus fail to solve well coal bunker coal breakage blocking problem, and noise in service is also big especially.The patent No. 88209732.6 disclosed coal bunker arch breaking apparatus are made up of water source, check valve, force lift, safety valve, compression indicator, high-pressure pipe and exit skirt nozzle in addition.The port of high-pressure pipe and sidewall are welded with the exit skirt nozzle respectively, and high pressure water directly is sprayed onto on the grid arch and vertical arch of coal bunker through the exit skirt nozzle.
Summary of the invention
The purpose of this utility model provides a kind of water cannon dredger that easy, easy to operate, that over-the-road expense is low coal-burning power plant's coal bunker stops up of installing.
The technical scheme that realizes the utility model purpose is: the water cannon dredger that the coal-burning power plant's coal bunker that is provided stops up is made up of upper strata contracting nozzle, lower floor's contracting nozzle, penstock, compression indicator, control cock, shut-off valve, water-supply-pipe, appropriate location on the coal bunker lower cone above the coal brake plate door liquidate (relatively) two contracting nozzles are installed, a contracting nozzle is installed in position suitable on coal spout above the feeder, contracting nozzle is connected with penstock by water-supply-pipe, compression indicator, control cock, shut-off valve, and shut-off valve is installed between control cock and the penstock.
Principle of work of the present utility model is because water accelerated movement in contracting nozzle, can reach than higher kinetic energy in its outlet, therefore, can inject effectively in the coal seam that bonds together, and around it rapid permeability, increased the surface moisture of coal, make between coal grain and the coal grain surface, the friction force between the internal face of coal grain and corresponding site reduces, because the effect of gravity, the coal grain is continuously fallen on the feeder, has guaranteed stable, the operation continuously of pulverized coal preparation system.What of injection flow rate can be controlled by the scantling of structure of contracting nozzle and the hydraulic pressure before the nozzle.Generally speaking, the local injection flow rate of the design about 3 minutes can not influence the safe operation of feeder and coal mill, and can prevent that coal bunker from stopping up by actv..
This device can be realized M/C, and can change manually-operated gate into electrically operated valve, realizes Long-distance Control easily, and compared with prior art, the utility model system is simple, installation is easy, easy to operate, over-the-road expense is low.
Description of drawings
Fig. 1 the utility model structural representation
The specific embodiment
During installation, at first on the wall of the installation position of determining, open the hole of contracting nozzle 1 (or 7) outlet external diameter size, contracting nozzle 1 (or 7) along continuous straight runs is inserted, and make the jet expansion end face concordant, then welding with internal face.Utilize the existing 1.2～1.6MPa penstock 5 of power plant, spray in the coal seam through shut-off valve 4, water-supply-pipe 6, control cock 3 and contracting nozzle 1 (or 7), hydraulic pressure in the water-supply-pipe 6 detects by compression indicator 2, what of injection flow rate, can be controlled by control cock 3 by the scantling of structure and the hydraulic pressure before the nozzle of contracting nozzle, shut-off valve 4 is used for the opening and closing of control presssure water.Generally speaking, the design injection flow rate about 3 minutes can not influence the safe operation of feeder 8 and coal mill, and can prevent that coal bunker from stopping up by actv..When coal mill is stopped transport more than 24 hours, when needing to start coal mill, start preceding 30 minutes and at first open upper nozzle 1 water spray about 3 minutes, start preceding 5 minutes and opened lower nozzle 7 water sprays 1～2 minute, can eliminate phenomenon because of pulverized coal preparation system long chute blockage of idle time.When if coal mill coal bunker in operational process stops up, according to block part, opened top or lower nozzle 1～2 minute, can dredge obstruction rapidly.
Claims (1)
1, a kind of coal-burning power plant coal bunker stops up the water cannon dredger, it is characterized in that by upper strata contracting nozzle (1), compression indicator (2), control cock (3), shut-off valve (4), penstock (5), water-supply-pipe (6) and lower floor's contracting nozzle (7) are formed, on the coal bunker lower cone (11) of coal brake plate door (10) top, liquidate two contracting nozzles (1) are installed, go up an installation contracting nozzle (7) at feeder (8) top coal spout (9), contracting nozzle (1) and (7) are by water-supply-pipe (6), compression indicator (2), control cock (3), shut-off valve (4) is connected with penstock (5), and shut-off valve (4) is installed between control cock (3) and the penstock (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03262751 CN2633806Y (en) | 2003-09-10 | 2003-09-10 | Dredging device for coal bunker blocking water cannon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03262751 CN2633806Y (en) | 2003-09-10 | 2003-09-10 | Dredging device for coal bunker blocking water cannon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2633806Y true CN2633806Y (en) | 2004-08-18 |
Family
ID=34296969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03262751 Expired - Fee Related CN2633806Y (en) | 2003-09-10 | 2003-09-10 | Dredging device for coal bunker blocking water cannon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2633806Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303754A (en) * | 2011-05-26 | 2012-01-04 | 株洲冶炼集团股份有限公司 | Anti-blocking structure, anti-blocking powder adding device and powder adding system |
| CN102633068A (en) * | 2012-04-10 | 2012-08-15 | 长沙市奇俊机电科技有限公司 | High-pressure air force flow-assistant cabin clearing equipment and cabin clearing method thereof |
| CN102745431A (en) * | 2012-06-27 | 2012-10-24 | 贵州金元发电运营有限公司盘南分公司 | Method and system for preventing coal blockage of raw coal bunker |
| CN103979229A (en) * | 2014-04-18 | 2014-08-13 | 李长龙 | Hydraulic automatic cleaning device for coal bunker and cleaning method thereof |
| CN104085625A (en) * | 2014-07-07 | 2014-10-08 | 无锡市华通环保设备有限公司 | Full-automatic coal bunker water cannon dredging device |
| 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 |
| CN105501715A (en) * | 2016-02-03 | 2016-04-20 | 湖南万通科技有限公司 | Arch destroying device and impeller coal feeder |
| CN106915573A (en) * | 2017-02-13 | 2017-07-04 | 宝钢集团新疆八钢铁有限公司 | A kind of Method of blockage removal of raw material silo wall sizing |
| CN107824327A (en) * | 2017-10-20 | 2018-03-23 | 华润电力（贺州）有限公司 | Coal feeder protection system device and its application 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 |
| CN110841552A (en) * | 2019-11-23 | 2020-02-28 | 山东钢铁集团日照有限公司 | System and process method for preventing pre-batching bin from being stuck |
| CN111056154A (en) * | 2020-02-11 | 2020-04-24 | 郑州大学 | Hydraulic coal bunker arch breaking device |
-
2003
- 2003-09-10 CN CN 03262751 patent/CN2633806Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303754A (en) * | 2011-05-26 | 2012-01-04 | 株洲冶炼集团股份有限公司 | Anti-blocking structure, anti-blocking powder adding device and powder adding system |
| CN102633068A (en) * | 2012-04-10 | 2012-08-15 | 长沙市奇俊机电科技有限公司 | High-pressure air force flow-assistant cabin clearing equipment and cabin clearing method thereof |
| CN102745431A (en) * | 2012-06-27 | 2012-10-24 | 贵州金元发电运营有限公司盘南分公司 | Method and system for preventing coal blockage of raw coal bunker |
| CN103979229A (en) * | 2014-04-18 | 2014-08-13 | 李长龙 | Hydraulic automatic cleaning device for coal bunker and cleaning method thereof |
| CN104085625A (en) * | 2014-07-07 | 2014-10-08 | 无锡市华通环保设备有限公司 | Full-automatic coal bunker water cannon dredging device |
| 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 |
| CN105501715A (en) * | 2016-02-03 | 2016-04-20 | 湖南万通科技有限公司 | Arch destroying device and impeller coal feeder |
| CN106915573A (en) * | 2017-02-13 | 2017-07-04 | 宝钢集团新疆八钢铁有限公司 | A kind of Method of blockage removal of raw material silo wall sizing |
| CN107824327A (en) * | 2017-10-20 | 2018-03-23 | 华润电力（贺州）有限公司 | Coal feeder protection system device and its application 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 |
| CN110841552A (en) * | 2019-11-23 | 2020-02-28 | 山东钢铁集团日照有限公司 | System and process method for preventing pre-batching bin from being stuck |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2633806Y (en) | Dredging device for coal bunker blocking water cannon | |
| CN102606842B (en) | Protecting device for forward water hammer | |
| CN208683586U (en) | Coal bunker total management system | |
| CN216194512U (en) | Water conservancy safety gate convenient to open and close | |
| CN202893572U (en) | Air pressure water-storage type atomization device | |
| CN201961727U (en) | Pneumatic block clearing device for coal dropping pipe | |
| CN202082174U (en) | Air pressure drainage device for landfill gas collecting well | |
| CN104085625A (en) | Full-automatic coal bunker water cannon dredging device | |
| CN108100506A (en) | Ceramic superconductivity high pressure rotary-cut blockage-clearing device | |
| CN102900459B (en) | Self-balancing water-seal-type anti-explosion device | |
| CN200968063Y (en) | High-efficiency low dust concrete injection machine | |
| CN105484770A (en) | Full-pneumatic wet-type pulp shooting machine for mine | |
| CN202868714U (en) | Coal drop pipe air injection dredging device | |
| CN116044311A (en) | Air directional drilling system and method for underground crushed soft coal layer of coal mine | |
| CN201179392Y (en) | Improved upper-gas-intake blast furnace cloth bag dust remover | |
| CN107227972A (en) | A kind of automatic sprayer | |
| CN202484515U (en) | Protective device for forward water hammer | |
| CN209405926U (en) | A kind of windrow synchronization device for reducing dust | |
| CN207004564U (en) | A kind of automatic sprayer | |
| CN203877256U (en) | Blockage removal device for cylindrical flat-bottom reinforced concrete bin | |
| CN201625500U (en) | Calcium spraying flue gas desulfurization device in limestone furnace | |
| CN208963787U (en) | A kind of solid feeding device | |
| CN202645011U (en) | Pumping device for super high-rise building steel tube concrete | |
| CN206800442U (en) | A kind of heatable adobe sleeping platform, which encloses, covers enclosing | |
| CN203959036U (en) | Full automaticity coal bunker water cannon dredger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING LANGKUN AUTOMATIZATION CO., LTD. Free format text: FORMER OWNER: ZHOU LIQING; PATENTEE Effective date: 20070316 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070316 Address after: 210013 world window science and technology software garden, No. 12 Huai gate, Nanjing, Jiangsu Patentee after: NANJING LUCULENT CO., LTD. Address before: 226003, Jiangsu, Nantong province natural harbor (Huaneng Nantong power plant) Co-patentee before: Jia Chaoqun Patentee before: Zhou Liqing |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHOU LIQING Free format text: FORMER OWNER: NANJING LANGKUN AUTOMATIZATION CO., LTD. Effective date: 20071221 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071221 Address after: Nantong City, Jiangsu province natural harbor (Huaneng Nantong power plant), zip code: 226003 Patentee after: Zhou Liqing Address before: World window science and technology software park, No. 12, Huai gate, Jiangsu, Nanjing Province, 210013 Patentee before: NANJING LUCULENT CO., LTD. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |