CN103291663A - Boiler induced-draft fan soot blower - Google Patents
Boiler induced-draft fan soot blower Download PDFInfo
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- CN103291663A CN103291663A CN2013102440181A CN201310244018A CN103291663A CN 103291663 A CN103291663 A CN 103291663A CN 2013102440181 A CN2013102440181 A CN 2013102440181A CN 201310244018 A CN201310244018 A CN 201310244018A CN 103291663 A CN103291663 A CN 103291663A
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- soot blower
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Abstract
The invention discloses a boiler induced-draft fan soot blower which is composed of an air inlet (1), air distribution pipes (2), an air outlet pipe (3), a nozzle pipe (4), a nozzle (5) and a supporting frame (6). The air distribution pipes (2) are ring-shaped and are arranged on a round contracted port of a current collector (8), the air nozzle pipes (4) are arranged symmetrically, the nozzle (5) is a gradually-contracted nozzle and is installed with an outlet (41) through threads in a matched mode, and the supporting frame (6) is fixedly connected with the nozzle pipe (4) through bolts (42) to play the role in fixing the nozzle pipe (4). The boiler induced-draft fan soot blower blows air to remove dust in the radial direction from the center of the impeller of the induced draft fan, counter-acting force of air flow inside the nozzle are mutually cancelled, and under the fixing function of the supporting frame, stability and effectiveness of working of the soot blower are ensured. The boiler induced-draft fan soot blower can use air or steam to carry out dust blowing, is simple in part structure, and convenient to process and produce and assemble in batch.
Description
Technical field
The present invention relates to a kind of boiler induced-draft fan device, especially a kind of boiler induced-draft fan soot blower.
Background technique
Boiler induced-draft fan is one of necessaries that guarantees the normal operation of boiler, induced draught fan is in a single day out of service, to directly have influence on the normal operation of boiler and exert oneself, so guaranteeing the normal operation of boiler induced-draft fan is to guarantee one of necessary condition of the normal operation of boiler, the key factor that influences the normal operation of boiler induced-draft fan at present is exactly induced draught fan vane dust deposition and the vibration problem that causes.
Contain water vapor in the boiler smoke; the dust that sulphide and deduster do not eliminate; these materials condense and form mortar with mix dust; very easily stick on the blade of induced draught fan; and before being bonded in the non-working surface and impeller of induced draught fan blade mostly; on the hub disk; treat to form after the water evaporation harder grey shell and sedimentation thickening gradually; when dust stratification reaches certain mass; the grey piece of part comes off under deadweight and rotary centrifugal force acting in conjunction; the fan rotor balance is destroyed and the generation vibration; when vibration surpasses specified value; will shut down and carry out artificial deashing processing; cause boiler to be forced to the banking fire blowing out; simultaneously, careless slightly just can cause the induced draught fan bearing support to shake to split or anchoring bolt loosening, cause equipment badly damaged.
If stop induced draught fan cleaning dust stratification frequently, influence the stability of safe operation and the production of boiler again greatly, so the boiler induced-draft fan of general external import is the supporting blade soot blower that is equipped with all, purpose is exactly just can dispose the dust stratification on the blade under the situation of not shutting down blowing out; At present to blow the mode of ash all be that blowing nozzle is external to these soot blowers, and gas blows from impeller axle center, blade lateral, and this effect of blowing grey mode is undesirable, can not fundamentally solve the problem that vane dust deposition causes fan vibration; Utility model patent boiler induced-draft fan soot blower (ZL200920140941.X) has designed a kind of device of outwards blowing from the impeller center along radial direction, its shortcoming is only to have designed a gas blow pipe extends draught fan impeller from the draught fan impeller airintake direction center, during air blowing because of the asymmetric pressure imbalance that will cause in the induced draught fan, cause the vibration of induced draught fan, particularly when blow grey air-flow when very big pressure imbalance in the induced draught fan more obvious, a gas blow pipe is not easy to fix simultaneously, in nozzle, under the reaction force of air-flow, be difficult to guarantee that nozzle and the fixed distance between the draught fan impeller on the gas blow pipe are constant.
Summary of the invention
The invention provides a kind of nozzle pipe symmetric arrangement, can utilize air or steam to blow grey boiler induced-draft fan soot blower, and component structural is simple, with low cost, is convenient to batch process production and assembling.
Technological scheme of the present invention is:
A kind of boiler induced-draft fan soot blower is made up of suction tude 1, gas-distribution pipe 2, steam outlet pipe 3, nozzle pipe 4, nozzle 5 and supporting frame 6, and material is high temperature high voltage resistant, anti abrasive metal.
Suction tude 1 connects source of the gas, and gas is actual according to producing, and can adopt pressurized air or high pressure steam, and the pressure and temperature of gas regulates to reach the optimum efficiency that induced draught fan blows ash according to the permitted value of induced draught fan and impeller reality; Gas-distribution pipe 2 is the circle shape, is installed on the reducing inwall of induced draught fan slip ring 8 by welding or bolt, does not influence the sectional area of flue gas flow channel, does not increase the resistance of flue gas flow channel; Steam outlet pipe 3 is vertical with gas-distribution pipe 2 circle cross sections, and flange I9 is arranged; Nozzle pipe 4 is connected with steam outlet pipe 3 by flange II43, flange I9, is convenient to installation and removal; On the nozzle 5 outside thread is arranged, in the nozzle pipe outlet 41 internal thread is arranged, nozzle 5 is directly installed in the nozzle pipe outlet 41 by screw thread, is convenient to installation and removal, and can adjust the distance of nozzle and blade; The effect of supporting frame 6 is to support and fixed nozzle pipe 4, and be connected and fixed by bolt and nozzle pipe 4, be convenient to installation and removal, leave 2～3 mm clearance between the axle of supporting frame 6 and draught fan impeller 7, prevent that soot blower from causing vibration because expanding with heat and contract with cold with the impeller shaft contact friction.
Nozzle pipe is even number, and symmetric arrangement along with the difference of nozzle pipe number adopts difform supporting frame, when being two symmetric arrangement as nozzle pipe, adopts " yi word pattern " supporting frame, when being four symmetric arrangement as nozzle pipe, adopts " cross " supporting frame.
Beneficial effect of the present invention:
Nozzle pipe is even number, symmetric arrangement, and the reaction force of air-flow is cancelled out each other because of symmetry in the nozzle, can guarantee well that the fixed distance between nozzle and the draught fan impeller is constant, guarantees the balance of nozzle pipe and does not cause vibration.
The nozzle pipe symmetric arrangement can guarantee the balance of induced draught fan internal air pressure and the balance of vane stress when blowing ash as far as possible, avoids producing new vibration factor and the wearing and tearing of impeller shaft because of unbalance stress.
Gas-distribution pipe is the circle shape, by the welding or bolt be installed in the circular reducing of slip ring, can with the good combination of induced draught fan, do not influence the actual internal area of flue gas and the resistance of flow of flue gas.
This soot blower is the device of outwards blowing from the impeller center along radial direction, can effectively blow down the dust stratification that coils before and after blade non-working surface and the impeller.
Description of drawings
Fig. 1 is the three-dimensional view of four nozzle pipes of a kind of boiler induced-draft fan soot blower of the present invention:
1---suction tude, 2---gas-distribution pipe, 3---steam outlet pipe, 4---nozzle pipe, 5---nozzle, 6---supporting frame, 9---flange I.
Fig. 2 is the inside assembled perspective view of four nozzle pipes of a kind of boiler induced-draft fan soot blower of the present invention:
1---suction tude, 2---gas-distribution pipe, 3---steam outlet pipe, 4---nozzle pipe, 5---nozzle, 6---supporting frame, 7---impeller, 8---slip ring, 9---flange I.
Fig. 3 is the three-dimensional view of a kind of boiler induced-draft fan soot blower of the present invention nozzle pipe 4:
41---outlet, 42---bolt, 43---flange II.
Fig. 4 is the sectional drawing of a kind of boiler induced-draft fan soot blower of the present invention nozzle 5.
Fig. 5 is the three-dimensional view of two nozzle pipes of a kind of boiler induced-draft fan soot blower of the present invention:
1---suction tude, 2---gas-distribution pipe, 3---steam outlet pipe, 4---nozzle pipe, 5---nozzle, 6---supporting frame.
Embodiment
Be described in further detail by the working procedure of embodiment to a kind of boiler induced-draft fan soot blower of the present invention below in conjunction with accompanying drawing 1, accompanying drawing 2 and accompanying drawing 5:
High pressure steam or air enter gas-distribution pipe 2 by suction tude 1, enter nozzle pipe after by gas-distribution pipe high pressure steam or air being distributed to 4 or 2 steam outlet pipes, the side of nozzle pipe is equipped with row's negative throat noz(zle) 5, the outlet of nozzle faces the impeller of induced draught fan and keeps suitable distance with the blade of impeller, high pressure steam or air blow out after accelerating through negative throat noz(zle) 5, directly impact in the inboard of draught fan impeller 7 blades, by powerful air-flow the dust stratification on draught fan impeller 7 blades is blown down; The effect that supporting frame 6 plays the fixed nozzle pipe is installed on the nozzle pipe 4, prevents that nozzle pipe from rocking the friction that causes nozzle and draught fan impeller blade, collision and damage draught fan impeller; Nozzle 5 is directly installed in the nozzle pipe outlet 41 by screw thread, and the distance between adjustable nozzles and the draught fan impeller blade, guarantees the grey effect of blowing that reaches best; Nozzle number symmetric arrangement on the nozzle pipe 4 guarantees that the reaction force of nozzle inner high voltage steam or air generation is cancelled out each other, and prevents that nozzle pipe is offset and rocks because produced by force unbalance; Gas-distribution pipe 2 is circular, directly welds or is installed in by bolt in the circular reducing of slip ring 8, does not reduce the cross section of flue gas circulation, does not increase the resistance of flow of flue gas.
Claims (7)
1. boiler induced-draft fan soot blower is characterized in that sootblower arrangement is made up of suction tude (1), gas-distribution pipe (2), steam outlet pipe (3), nozzle pipe (4), nozzle (5) and supporting frame (6).
2. a kind of boiler induced-draft fan soot blower according to claim 1 is characterized in that: described gas-distribution pipe (2) is the circle shape, is installed in the circular reducing of slip ring (8).
3. a kind of boiler induced-draft fan soot blower according to claim 1 is characterized in that: row's threaded outlet (41) is arranged on the described gas-distribution pipe (4).
4. a kind of boiler induced-draft fan soot blower according to claim 1, it is characterized in that: described nozzle (5) is negative throat noz(zle).
5. a kind of boiler induced-draft fan soot blower according to claim 1, it is characterized in that: described nozzle (5) cooperates installation by screw thread with outlet (41), by the distance between rotation adjustable nozzles and the draught fan impeller blade.
6. a kind of boiler induced-draft fan soot blower according to claim 1 is characterized in that: support frame as described above (6) is fixedlyed connected with nozzle pipe (4) by bolt (42), plays the effect of fixed nozzle pipe.
7. a kind of boiler induced-draft fan soot blower according to claim 1 is characterized in that: described suction tude (1), gas-distribution pipe (2), steam outlet pipe (3), nozzle pipe (4), nozzle (5) and supporting frame (6) are high temperature high voltage resistant, anti abrasive metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102440181A CN103291663A (en) | 2013-06-20 | 2013-06-20 | Boiler induced-draft fan soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102440181A CN103291663A (en) | 2013-06-20 | 2013-06-20 | Boiler induced-draft fan soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103291663A true CN103291663A (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102440181A Pending CN103291663A (en) | 2013-06-20 | 2013-06-20 | Boiler induced-draft fan soot blower |
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| Country | Link |
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| CN (1) | CN103291663A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678846A (en) * | 2016-12-14 | 2017-05-17 | 北京神雾环境能源科技集团股份有限公司 | Soot blower |
| CN109028111A (en) * | 2018-08-24 | 2018-12-18 | 浙江浙能温州发电有限公司 | A kind of soot blower with air-flow guiding groove and exchangeable nozzle |
| CN110155682A (en) * | 2018-02-09 | 2019-08-23 | 张民基 | The intelligent general assembly line of LED-TV intelligent integrated machine mould group |
| CN111570107A (en) * | 2020-05-09 | 2020-08-25 | 南京玛格耐特智能科技有限公司 | Special gas-saving nozzle structure for ash cleaning device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052932A (en) * | 1989-12-30 | 1991-07-10 | 汶河发电厂 | Method for blowing out dust on blades of draught fan for boiler and device |
| JPH09133100A (en) * | 1995-11-10 | 1997-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Blower device |
| CN2526691Y (en) * | 2002-03-07 | 2002-12-18 | 夏才明 | Ash cleaner for draught fin |
| CN201539451U (en) * | 2009-06-09 | 2010-08-04 | 广西丰林木业集团股份有限公司 | Soot blower for draught fan of boiler |
| CN102465928A (en) * | 2010-11-18 | 2012-05-23 | 天津永盛万达环境设备安装工程有限公司 | Dust blowing device for reinforced draught fan blade |
-
2013
- 2013-06-20 CN CN2013102440181A patent/CN103291663A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052932A (en) * | 1989-12-30 | 1991-07-10 | 汶河发电厂 | Method for blowing out dust on blades of draught fan for boiler and device |
| JPH09133100A (en) * | 1995-11-10 | 1997-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Blower device |
| CN2526691Y (en) * | 2002-03-07 | 2002-12-18 | 夏才明 | Ash cleaner for draught fin |
| CN201539451U (en) * | 2009-06-09 | 2010-08-04 | 广西丰林木业集团股份有限公司 | Soot blower for draught fan of boiler |
| CN102465928A (en) * | 2010-11-18 | 2012-05-23 | 天津永盛万达环境设备安装工程有限公司 | Dust blowing device for reinforced draught fan blade |
Non-Patent Citations (1)
| Title |
|---|
| 尹晓天: "引风机蒸汽吹灰装置", 《中国电力》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678846A (en) * | 2016-12-14 | 2017-05-17 | 北京神雾环境能源科技集团股份有限公司 | Soot blower |
| CN110155682A (en) * | 2018-02-09 | 2019-08-23 | 张民基 | The intelligent general assembly line of LED-TV intelligent integrated machine mould group |
| CN110155682B (en) * | 2018-02-09 | 2024-02-09 | 张民基 | Intelligent assembly line of LED-TV intelligent all-in-one module |
| CN109028111A (en) * | 2018-08-24 | 2018-12-18 | 浙江浙能温州发电有限公司 | A kind of soot blower with air-flow guiding groove and exchangeable nozzle |
| CN111570107A (en) * | 2020-05-09 | 2020-08-25 | 南京玛格耐特智能科技有限公司 | Special gas-saving nozzle structure for ash cleaning device |
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Application publication date: 20130911 |