CN103047899A - Surface ash clearing device of pipe heat exchanger - Google Patents
Surface ash clearing device of pipe heat exchanger Download PDFInfo
- Publication number
- CN103047899A CN103047899A CN2012102088323A CN201210208832A CN103047899A CN 103047899 A CN103047899 A CN 103047899A CN 2012102088323 A CN2012102088323 A CN 2012102088323A CN 201210208832 A CN201210208832 A CN 201210208832A CN 103047899 A CN103047899 A CN 103047899A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- controller
- orifice plate
- exchanger tube
- dust
- 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.)
- Pending
Links
Abstract
The invention discloses a surface ash clearing device of a pipe heat exchanger. The clearing device comprises a heat exchanger pipe bundle arranged in a smoke channel, a dust-removing hole plate, a driving connection rod, a smoke resistance sensor, a motor and a controller. The dust-removing hole plate is provided with a plurality of through holes, a heat exchanger pipe outer ring of the heat exchanger pipe bundle respectively penetrates through the through holes, two ends of the driving connection rod are respectively connected with the dust-removing hole plate and a motor rotating shaft, the output end of the controller is connected with the control signal input end of the motor, the smoke resistance sensor is arranged in the smoke channel, and the signal output end is connected with the signal input end of the controller. The clearing device is capable of effectively and conveniently clearing surface ash of heat exchanger pipes, avoids the shortcoming of a traditional ash blowing mode, and ensures stable and economical operation of a boiler.
Description
Technical field
The present invention relates to a kind of scavenge unit of pipe heat exchanger superficial dust.
Background technology
It is interior to realize flue gas heat exchange that pipe heat exchanger is used for boiler back end ductwork mostly, recycles behind the collection fume afterheat.During the interior sweep of gases heat exchanger tube of boiler back end ductwork, in the lee face formation vortex of pipe, the soot particle that granularity is large is large because of its kinetic energy, and difficult quilt involves in the vortex; But the flying dust granularity has extremely strong absorption affinity less than the particle of 30 μ m in the flue gas, is easily involved in whirlpool and hits on tube wall, forms dust stratification.The flying dust that accumulates in the lower heat exchanger tube sub-surface of boiler back end ductwork cigarette temperature generally is dry and soft state, belongs to the laxity dust stratification.
Dust stratification causes heat transfer resistance to increase, and heat transfer coefficient reduces, and heat-transfer effect worsens rapidly, and the exhaust gas temperature of boiler raises, and boiler thermal output reduces greatly, and experience shows, 10 ~ 15 ° of C of the every rising of exhaust gas temperature, and boiler thermal output descends 0.5%.The electrisity consumption of boiler induced-draft fan increases simultaneously, and Boiler Economical Operation reduces.Therefore, need to take effective method that the dust stratification degree is reduced, guarantee the operation that boiler can be stabilized the economy.
For a long time, the method for dust stratification is to utilize soot blower to purge on the reduction boiler operation.The main soot-blowing mode in domestic thermal power plant has steam soot blowing and sonic soot blowing.These two kinds of soot-blowing modes can be removed dust stratification to a certain extent, but because design feature, steam soot blowing causes smoke moisture to increase, and more easily causes dust stratification, and operational reliability is poor, and equipment failure rate is higher, and maintenance cost is high; Acoustic wave ash ejector blows grey DeGrain, and the investment maintenance cost is higher.
Summary of the invention
Technical problem to be solved by this invention provides a kind of scavenge unit of pipe heat exchanger superficial dust, utilize this scavenge unit effectively to make things convenient for and remove the heat exchanger tube superficial dust, avoid the defective of traditional soot-blowing mode, guaranteed the operation that boiler is stabilized the economy.
For solving the problems of the technologies described above, the scavenge unit of pipe heat exchanger superficial dust of the present invention comprises the heat exchanger tube of being located in the flue, the dedusting orifice plate, drive link, the flue gas resistance sensor, motor and controller, described dedusting orifice plate is provided with some through holes and penetrates respectively each heat exchanger tube outer ring of described heat exchanger tube, described drive link two ends connect respectively described dedusting orifice plate and machine shaft, described controller output end connects described motor control signal input, and described flue gas resistance sensor is located at the signal input part that the interior also signal output part of described flue connects described controller.
Further, the aperture of the some through holes of above-mentioned dedusting orifice plate is greater than described heat exchanger tube external diameter.
Because the scavenge unit of pipe heat exchanger superficial dust of the present invention has adopted technique scheme, be that this scavenge unit comprises heat exchanger tube, dedusting orifice plate, drive link, flue gas resistance sensor, motor and the controller of being located in the flue, the dedusting orifice plate is provided with some through holes and penetrates respectively each heat exchanger tube outer ring of heat exchanger tube, the drive link two ends connect respectively dedusting orifice plate and machine shaft, controller output end connects the motor control signal input, and the flue gas resistance sensor is located at the signal input part that the interior also signal output part of flue connects controller.This scavenge unit can effectively make things convenient for removes the heat exchanger tube superficial dust, has avoided the defective of traditional soot-blowing mode, has guaranteed the operation that boiler is stabilized the economy.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the structural representation of the scavenge unit of pipe heat exchanger superficial dust of the present invention.
The specific embodiment
As shown in Figure 1, the scavenge unit of pipe heat exchanger superficial dust of the present invention comprises the heat exchanger tube of being located in the flue, dedusting orifice plate 1, drive link 4, flue gas resistance sensor 2, motor 5 and controller 3, described dedusting orifice plate 1 is provided with some through holes 11 and penetrates respectively each heat exchanger tube 6 outer ring of described heat exchanger tube, described drive link 4 two ends connect respectively described dedusting orifice plate 1 and motor 5 rotating shafts, described controller 3 outputs connect described motor 5 control signal inputs, and described flue gas resistance sensor 2 is located at the signal input part that the interior also signal output part of described flue connects described controller 3.
Further, the aperture of above-mentioned dedusting orifice plate 1 some through holes 11 is greater than described heat exchanger tube 6 external diameters.The wearing and tearing of heat exchanging tube wall in the dedusting orifice plate moving process can be avoided in the aperture of the some through holes of dedusting orifice plate greater than the heat exchanger tube external diameter, and can well coincide with heat exchanger tube, guarantee that the dedusting orifice plate moves smooth and easy.
The flue gas resistance sensor of this scavenge unit detects the flow of flue gas resistance that is installed in pipe heat exchanger in the flue, and in controller preset setting values, when the flow of flue gas resistance of pipe heat exchanger in the flue during less than setting value, the controller attonity, motor remains static, and the dedusting orifice plate is positioned at heat exchanger tube one side; When the flow of flue gas resistance of pipe heat exchanger during greater than setting value, the action of controller drive motors, motor makes the dedusting orifice plate move to the heat exchanger tube opposite side with heat exchanger tube as guide rail by drive link, in the dedusting orifice plate moving process dust stratification on heat exchanger tube surface is removed, the dust stratification of removing is discharged with flue gas; This moment, the flow of flue gas resistance of pipe heat exchanger reduced and less than setting value, controller control motor is stopped transport, and the dedusting orifice plate stops mobile; When the flow of flue gas resistance of pipe heat exchanger raise again, the dedusting orifice plate is oppositely mobile realization heat exchanger tube dust stratification removing again.So the dedusting orifice plate moves back and forth on the heat exchanger tube surface, realizes the automatic removing of dust stratification.
This scavenge unit is simple in structure, and dust stratification is removed automatically control, failure rate is low, and dust stratification is removed successful, and motor need not continuous operation, has reduced energy consumption and operating cost, has guaranteed the operation that boiler is stabilized the economy.
Claims (2)
1. the scavenge unit of a pipe heat exchanger superficial dust, comprise the heat exchanger tube of being located in the flue, it is characterized in that: also comprise the dedusting orifice plate, drive link, the flue gas resistance sensor, motor and controller, described dedusting orifice plate is provided with some through holes and penetrates respectively each heat exchanger tube outer ring of described heat exchanger tube, described drive link two ends connect respectively described dedusting orifice plate and machine shaft, described controller output end connects described motor control signal input, and described flue gas resistance sensor is located at the signal input part that the interior also signal output part of described flue connects described controller.
2. the scavenge unit of pipe heat exchanger superficial dust according to claim 1, it is characterized in that: the aperture of the some through holes of described dedusting orifice plate is greater than described heat exchanger tube external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102088323A CN103047899A (en) | 2012-06-25 | 2012-06-25 | Surface ash clearing device of pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102088323A CN103047899A (en) | 2012-06-25 | 2012-06-25 | Surface ash clearing device of pipe heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047899A true CN103047899A (en) | 2013-04-17 |
Family
ID=48060633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102088323A Pending CN103047899A (en) | 2012-06-25 | 2012-06-25 | Surface ash clearing device of pipe heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987869A (en) * | 2015-07-17 | 2015-10-21 | 南京贝特空调设备有限公司 | Dry quenching furnace system cooling apparatus |
| CN115060085A (en) * | 2022-08-18 | 2022-09-16 | 佛山市蓝之鲸科技有限公司 | Kiln waste heat utilization method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283826Y (en) * | 1996-06-26 | 1998-06-10 | 王星凯 | Machinery scale removing evaporimeter |
| JPH11211389A (en) * | 1998-01-27 | 1999-08-06 | Sakae Sangyo Kk | Dust removing device for tube for heat-exchange |
| CN1851382A (en) * | 2006-05-18 | 2006-10-25 | 东北电力大学 | Ash-scraping waste-heat-recovering coal-saving device |
| CN101543390A (en) * | 2008-03-26 | 2009-09-30 | 迈科机械制造有限及两合公司 | Heat reclaim device with self-cleaning |
| CN202648516U (en) * | 2012-06-25 | 2013-01-02 | 福建成信绿集成有限公司 | Device for removing accumulated dust on surface of tubular heat exchanger |
-
2012
- 2012-06-25 CN CN2012102088323A patent/CN103047899A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283826Y (en) * | 1996-06-26 | 1998-06-10 | 王星凯 | Machinery scale removing evaporimeter |
| JPH11211389A (en) * | 1998-01-27 | 1999-08-06 | Sakae Sangyo Kk | Dust removing device for tube for heat-exchange |
| CN1851382A (en) * | 2006-05-18 | 2006-10-25 | 东北电力大学 | Ash-scraping waste-heat-recovering coal-saving device |
| CN101543390A (en) * | 2008-03-26 | 2009-09-30 | 迈科机械制造有限及两合公司 | Heat reclaim device with self-cleaning |
| CN202648516U (en) * | 2012-06-25 | 2013-01-02 | 福建成信绿集成有限公司 | Device for removing accumulated dust on surface of tubular heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987869A (en) * | 2015-07-17 | 2015-10-21 | 南京贝特空调设备有限公司 | Dry quenching furnace system cooling apparatus |
| CN115060085A (en) * | 2022-08-18 | 2022-09-16 | 佛山市蓝之鲸科技有限公司 | Kiln waste heat utilization method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201110561Y (en) | Boiler smoke discharging residual heat recovery energy-saving apparatus | |
| CN103104926B (en) | A kind of compound soot blower system in low-temperature flue gas waste heat recovery system | |
| CN203478599U (en) | Hot-blast stove for biomass particles | |
| CN206771420U (en) | A kind of block-resistant type air preheater step-by-step arrangement system | |
| CN202452810U (en) | Device for baking waste silk by using smoke gas afterheat of steam boiler | |
| CN103759279A (en) | Soot blowing system of coal-fired boiler heating surface | |
| CN201688747U (en) | Deashing device of heat exchanger | |
| CN106996577A (en) | A kind of block-resistant type air preheater step-by-step arrangement system | |
| CN203771443U (en) | Air preheater | |
| CN201387005Y (en) | Dust-removing fluidized-bed furnace | |
| CN103047899A (en) | Surface ash clearing device of pipe heat exchanger | |
| CN107676802B (en) | Rotary hood for soot blowing of smoke duct and working method thereof | |
| CN202648516U (en) | Device for removing accumulated dust on surface of tubular heat exchanger | |
| CN203309917U (en) | Coal fired boiler vertical shaft flue provided with sound wave soot blowers | |
| CN202297467U (en) | Self-dust removal type dry quenching preheater | |
| CN201964436U (en) | Steam soot blower | |
| CN203131845U (en) | Compound soot blower system for low-temperature flue gas waste heat recovery system | |
| CN103471094B (en) | CFBB utilizes high temperature cyclone separator to purge back-end surfaces device | |
| CN203436987U (en) | Spray washer | |
| CN206875458U (en) | Low-temperature region ash disposal energy saver in a kind of supercritical tower-type boiler | |
| CN202747369U (en) | Balance type exhaust-heat boiler dust removal device | |
| CN203980313U (en) | Machine automatization dust removing machine | |
| CN201517776U (en) | Omnibearing ash remover | |
| CN207162509U (en) | Improve SCR temperature of reactor system and devices | |
| CN203540704U (en) | Integrated flue gas residual heat recovery low-temperature electric precipitator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130417 |