CN209415486U - A kind of soot blower system that steam/compressed air automatically switches - Google Patents
A kind of soot blower system that steam/compressed air automatically switches Download PDFInfo
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- CN209415486U CN209415486U CN201822110852.2U CN201822110852U CN209415486U CN 209415486 U CN209415486 U CN 209415486U CN 201822110852 U CN201822110852 U CN 201822110852U CN 209415486 U CN209415486 U CN 209415486U
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- Prior art keywords
- compressed air
- soot blower
- soot
- steam
- heat pipe
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- 239000004071 soot Substances 0.000 title claims abstract description 90
- 238000007664 blowing Methods 0.000 claims abstract description 38
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 31
- 238000013517 stratification Methods 0.000 abstract description 29
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010025 steaming Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Incineration Of Waste (AREA)
Abstract
The utility model relates to electric power and steaming plant field, especially a kind of steam/compressed air automatic switchover soot blower system.Existing boiler of power plant collocation is existed using single sootblowing dielectric soot blower cannot be considered in terms of blow loss, the problems such as soot blowing effect and usage economy, the utility model provides a kind of soot blower system that steam/compressed air automatically switches, including can to heat pipe soot blowing processing soot blower and it is coupled provide sootblowing dielectric conveyance conduit, the soot blower system further includes controller and is connected electrically and is set to the pressure-detecting device of heat pipe position, the conveyance conduit includes jet chimney and compressed air pipe, the controller automatically switches jet chimney and compressed air pipe selects a connection soot blower.The utility model can automatically switch selection steam/compressed air medium according to heat pipe dust stratification degree in use and supply soot blower, and blow loss is reduced while meeting soot blowing demand, improves soot blowing economy.
Description
Technical field
The utility model relates to electric power and steaming plant field, what especially a kind of steam/compressed air automatically switched blows
Ash system.
Background technique
Slagging and dust stratification easily occur for the various heated pipe surfaces of boiler of power plant, such as water-cooling wall, superheater, reheater, save coal
Device and air preheater etc., therefore can all configure the soot blower that purging heat pipe reduces dust stratification.Existing soot blower type is mainly wrapped
Steam sootblower, compressed air soot-blowing device and acoustic wave ash ejector etc. are included, wherein first two is using high pressure gas working medium as soot blowing
Medium, the soot blower that needs to arrange in pairs or groups use.Steam and compressed air both sootblowing dielectrics respectively have feature, the pressure and temperature of steam
It is higher, energy is bigger, soot blowing effect is better than compressed air, is the conventional configuration of power plant, but the high-temperature steam of high speed is also easy
Heat pipe is damaged, metal tube blow loss is made, causes booster and working medium leakage, and steam consumption quantity is larger, usage economy is not
It is good；The general pressure of compressed air is lower, and soot blowing effect is slightly below steam, but not blow loss heat pipe, usage economy are more preferable.It is existing
It is all single steam sootblower or compressed air soot-blowing device that boiler of power plant, which is equipped with the soot blower used, and soot blower sprays in work
Sootblowing dielectric pressure, the temperature penetrated are fixed, and cannot be adjusted and be converted according to the dust stratification degree of heat pipe, can not combined and blow
Damage, soot blowing effect and usage economy.It such as changes existing steam sootblower into compressed air soot-blowing device, is blown although being not a concern
Damage problem, but soot blowing effect can be reduced, the blocking of heat pipe dust stratification is caused to increase security risk；Otherwise compressed air soot-blowing device is changed
At steam sootblower, prevents heat pipe dust stratification from blocking though soot blowing effect can be improved, blow loss problem may be caused.
Utility model content
The technical problems to be solved in the utility model and the technical assignment of proposition are that existing boiler of power plant collocation is overcome to use
Single sootblowing dielectric soot blower cannot be considered in terms of the problem of blow loss, soot blowing effect and usage economy, and the utility model provides
A kind of soot blower system that steam/compressed air automatically switches, the soot blower system can be in use according to heat pipe dust stratification degree
Automatically switch selection steam/compressed air medium and supply soot blower, blow loss is reduced while meeting soot blowing demand, improves soot blowing
Economy.
The utility model solves the technical solution that technical problem uses: a kind of soot blowing that steam/compressed air automatically switches
System, including can to heat pipe soot blowing processing soot blower and it is coupled provide sootblowing dielectric conveyance conduit, it is characterized in that
The soot blower system further includes controller and is connected electrically and is set to the pressure-detecting device of heat pipe position, the delivery pipe
Road includes jet chimney and compressed air pipe, and the controller automatically switches jet chimney and compressed air pipe selects a connection
Soot blower.The utility model connects soot blower by the pipeline of two kinds of different sootblowing dielectrics and alternatively opens, to automatically switch to select
It selects steam/compressed air medium supply soot blower and carries out soot blowing cleaning, it is ensured that reduce blow loss while soot blowing effect and improve
Soot blowing economy；The dust stratification journey for passing through detection heat pipe skin resistance measurement heat pipe set on the pressure-detecting device of heat pipe
Degree, and controller is sent information to, resistance also can be larger when dust stratification degree is serious, and controller receives Resistance Pressure information and installs in advance
Definite value is compared, and control steam/compressed air pipe alternatively opens the suitable sootblowing dielectric for providing and meeting soot blowing needs.This
Outside, pressure-detecting device can be the conventional pressure sensor being attached on walling of flue, and pressure sensor is the prior art.
As further improving and supplementing to above-mentioned technical proposal, the utility model uses following technical measures: described
Pressure-detecting device is divided into the upstream position and downstream position of heat pipe, and the upstream position and downstream position are respectively to press cigarette
Air-flow is on front side of the heat pipe that sequentially passes through and on rear side of heat pipe.Pressure-detecting device is widely scattered in the forward and backward side of heat pipe
Corresponding upstream position and downstream position, can sufficiently monitor the resistance of heat pipe upstream and downstream different location, more fully transmission phase
Resistance Pressure information is closed to controller, so that the soot blower that controller regulates and controls corresponding heat pipe upstream and downstream different location respectively switches choosing
Suitable sootblowing dielectric is selected, blow loss is reduced while meeting soot blowing demand, improves soot blowing economy.
Set up the steam valve and compressed air valve of automatically controlled opening and closing, the steam on the jet chimney and compressed air pipe separately
Valve and compressed air valve are electrically connected with the controller.Controller passes through the steam valve and compressed air valve being connected electrically, can be very
Easily two valves of manipulation select a unlatching, automatically switch steam/compressed air as sootblowing dielectric and supply soot blower, completion by
The soot blowing cleaning works of heat pipe.
The jet chimney connects in common conduit with compressed air pipe, and the common conduit connects soot blower.Steam
Pipeline connects soot blower by same common conduit with compressed air pipe, respectively independent compared with jet chimney and compressed air pipe
It connects soot blower to save duct length, simplify installation, is conducive to save equipment investment, reduces use cost.
The utility model provides a kind of soot blower system that steam/compressed air automatically switches, and the soot blower system can make
Selection steam/compressed air medium supply soot blower is automatically switched according to heat pipe superficial dust degree with middle, is meeting soot blowing
Blow loss is reduced while demand, improves soot blowing economy.When soot blower system works, preferentially make in the case where meeting soot blowing demand
Soot blower is supplied with compressed air, to reduce heat pipe blow loss, improves soot blowing economy, it is only larger in heat pipe skin resistance
It is just switched to steam supply soot blower under necessary condition beyond setting value, and is come back to when heat pipe skin resistance reduces
Compressed air supplies soot blower.
Detailed description of the invention
Fig. 1: soot blower system structural schematic diagram described in the utility model.
Fig. 2: judge the mathematical model schematic diagram of heat pipe superficial dust degree.
In figure: 1. jet chimneys, 2. steam valves, 3. compressed air valves, 4. compressed air pipes, 5. soot blowers, 6. are heated
Pipe, 7. pressure-measuring-points, 8. flues, 9. common conduits, 10. dust stratifications.
Specific embodiment
Explanation and specific embodiment are described further the utility model with reference to the accompanying drawing.
As shown in Figure 1, a kind of steam/soot blower system that automatically switches of compressed air, including can be to 6 soot blowing of heat pipe at
The conveyance conduit of the soot blower 5 of reason and coupled offer sootblowing dielectric, it is characterized in that the soot blower system further includes controller
With the pressure-detecting device for being connected electrically and being set to 6 position of heat pipe, the conveyance conduit includes that jet chimney 1 and compression are empty
Feed channel 4, the controller automatically switches jet chimney 1 and compressed air pipe 4 selects a connection soot blower 5；The pressure inspection
Upstream position and downstream position that device is divided into heat pipe 6 are surveyed, by arrow indicates flue gas flow direction, flue gas in flue 8 in Fig. 1
It is upstream position on front side of the correspondence heat pipe 6 first reached, is downstream position, pressure-measuring-point 7 in figure on rear side of the heat pipe reached afterwards
For the position of corresponding pressure detection device setting；Set up the steam valve 2 of automatically controlled opening and closing on jet chimney 1 and compressed air pipe 4 separately
With compressed air valve 3, the steam valve 2 and compressed air valve 3 are electrically connected with the controller；The jet chimney 1 and compressed air
Pipeline 4 connects in common conduit 9, which connects soot blower 5.
In use, controller by receive pressure-detecting device transmitting come heat pipe skin resistance information and controller
Interior preset resistance versus measures the dust stratification degree of heated pipe surface, and then controls steam valve and compressed air valve is selected one and opened
It opens, selects a connection common conduit to automatically switch jet chimney and compressed air pipe, convey corresponding sootblowing dielectric to soot blower,
Soot blowing cleaning is carried out for soot blower, the system automatically switches to select suitable sootblowing dielectric by measuring heat pipe dust stratification degree
It is cleaned for soot blower soot blowing, blow loss can be reduced while soot blowing effect is effectively ensured and improve soot blowing economy；Pressure
Detection device is widely scattered in the upstream position and downstream position of heat pipe, can sufficiently monitor heat pipe upstream and downstream different location
Resistance, more fully transmission associated resistive information is to controller, so that regulation correspondence heat pipe upstream and downstream are not respectively for controller
Soot blower switching with position selects suitable sootblowing dielectric；Jet chimney and compressed air pipe are connect by same common conduit
Logical soot blower, being respectively independently connected compared with jet chimney and compressed air pipe, soot blower saves duct length, simplification is installed, favorably
In saving equipment investment, use cost is reduced.
As shown in Fig. 2, (a) indicates heat pipe cleaning without dust stratification situation in figure；(b) indicate that there is dust stratification on heat pipe (6) surface
(10) situation after.Wherein, V0Indicate flue gas flow rate when heat pipe cleaning, V1Indicate heat pipe dust stratification after flow velocity, h be by
Heat pipe spacing, e indicate the thickness of dust stratification 9, and hereinafter referred to as heated pipe surface is heating surface.
When heating surface cleaning, resistance P0(resistance when designing) can be indicated with following formula:
K, k' and n are constant in formula.
When fouling of heating surface, resistance P1Are as follows:
Wherein, e is dust stratification thickness.
Define dust stratification plugging rate:
Its physical significance is the dust stratification plugging rate that heat pipe corresponds to heating surface channel, when range 0-1, ξ=0, shows nothing
Dust stratification；When ξ=1, show dust stratification completely plugged heating surface flow channel.
Comprehensive formula above, available:
Thus relationship will be established between dust stratification plugging rate and heating surface pressure difference, as long as monitoring heating surface resistance
It is back-calculated to obtain dust stratification plugging rate.For inertia resistance be it is main the case where, n can approximation take 2.
When dust stratification plugging rate reaches 30%, show that dust stratification is more serious, using this as be switched to the judgement of steam soot blowing according to
According to can be calculated according to formula (4) at this time, the resistance P of heating surface1=2.04P0, i.e. resistance is 2.04 times or so of design value；
When dust stratification plugging rate is reduced to 10%, show that dust stratification is slighter, using this as the judgment basis for being switched to compressed air soot-blowing, this
When P1=1.23P0。
Soot blower system mainly uses compressed air as sootblowing dielectric when work, and is monitored and be heated using pressure-measuring-point 7
Face resistance, steam valve 2 is closed at this time, 3 standard-sized sheet of compressed air valve；If heated pipe surface face resistance reaches 2.04 times of design value
When, show that dust stratification is more serious, close compressed air valve 3 at this time, opens steam valve 2, use steam as sootblowing dielectric；When heated
When pipe surface resistance drop is down to 1.23 times of design value, shows that dust stratification degree improves, at this time steam off valve 2, it is empty to open compression
Air valve 3, uses compressed air as sootblowing dielectric.
Claims (4)
1. the soot blower system that a kind of steam/compressed air automatically switches, including the soot blower that can be handled heat pipe (6) soot blowing
(5) and it is coupled provide sootblowing dielectric conveyance conduit, it is characterized in that the soot blower system further include controller and with its electricity
The pressure-detecting device of heat pipe (6) position is connected and is set to, the conveyance conduit includes jet chimney (1) and compressed air hose
Road (4), the controller automatically switches jet chimney (1) and compressed air pipe (4) selects a connection soot blower (5).
2. the soot blower system that steam according to claim 1/compressed air automatically switches, it is characterized in that the pressure detecting
Device is divided into the upstream position and downstream position of heat pipe (6), and the upstream position and downstream position are respectively to press flue gas stream
On front side of to the heat pipe sequentially passed through and on rear side of heat pipe.
3. the soot blower system that steam according to claim 1/compressed air automatically switches, it is characterized in that the jet chimney
(1) and on compressed air pipe (4) set up separately automatically controlled opening and closing steam valve (2) and compressed air valve (3), the steam valve (2) and
Compressed air valve (3) is electrically connected with the controller.
4. the soot blower system that steam according to claim 1/compressed air automatically switches, it is characterized in that the jet chimney
(1) and in compressed air pipe (4) connection common conduit (9), the common conduit (9) connects soot blower (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822110852.2U CN209415486U (en) | 2018-12-16 | 2018-12-16 | A kind of soot blower system that steam/compressed air automatically switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822110852.2U CN209415486U (en) | 2018-12-16 | 2018-12-16 | A kind of soot blower system that steam/compressed air automatically switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209415486U true CN209415486U (en) | 2019-09-20 |
Family
ID=67938600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822110852.2U Expired - Fee Related CN209415486U (en) | 2018-12-16 | 2018-12-16 | A kind of soot blower system that steam/compressed air automatically switches |
Country Status (1)
| Country | Link |
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| CN (1) | CN209415486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631058A (en) * | 2018-12-16 | 2019-04-16 | 浙江浙能温州发电有限公司 | A kind of soot blower system and its application method that steam/compressed air automatically switches |
-
2018
- 2018-12-16 CN CN201822110852.2U patent/CN209415486U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631058A (en) * | 2018-12-16 | 2019-04-16 | 浙江浙能温州发电有限公司 | A kind of soot blower system and its application method that steam/compressed air automatically switches |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190920 |
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| CF01 | Termination of patent right due to non-payment of annual fee |