CN209688817U - A kind of circulating fluidized bed boiler ash control valve anti-block apparatus - Google Patents
A kind of circulating fluidized bed boiler ash control valve anti-block apparatus Download PDFInfo
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- CN209688817U CN209688817U CN201822145801.3U CN201822145801U CN209688817U CN 209688817 U CN209688817 U CN 209688817U CN 201822145801 U CN201822145801 U CN 201822145801U CN 209688817 U CN209688817 U CN 209688817U
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Abstract
The utility model relates to boiler technology fields, refer specifically to a kind of circulating fluidized bed boiler ash control valve anti-block apparatus；Valve body and valve head including ash control valve, material returning device, fluidize anti-blocking component, the adjusting port of the valve body is connect with material returning device, refractory lining is attached on valve body and its inner wall of adjusting port, valve head to change valve head and can adjust the backflow gap between port in transverse shifting in valve body by adjusting rod；The anti-blocking component of fluidisation includes compressed air pipe and purging spray gun, adjusts port and is equipped with several purging spray guns, several purging spray guns are connect by compressed air pipe with compressed gas source；The utility model is structurally reasonable, ash control valve entry zone is realized normally to fluidize and purge online, block clearing, the grey control valve import blocking of effective solution and the lower unsmooth problem of ash, the operational safety and reliability of ash control valve are improved, overall structure is simple and convenient to operate, manufacturing cost is low, practical.
Description
Technical field
The utility model relates to boiler technology fields, refer specifically to a kind of circulating fluidized bed boiler ash control valve anti-block apparatus.
Background technique
Large circulating fluidized bed boiler material returning device with external bed is to pass through high temperature to the flow of external bed circulation lime-ash
Ash controls valve to adjust control, and high temperature ash control valve is poured by adjusting the high temperature resistant cone-shaped valve head with internal cooling water with valve body liner
Gap size between material feeding enters the circulation lime-ash flow of external bed to control material returning device, to control burner hearth bed temperature and external
The caloric receptivity and its vapor (steam) temperature of bed internal heating surface.It is passed through in the circulating fluidized bed boiler power plant actual motion with external bed at home
Often occur due to recycling the originals such as lime-ash fluidisation is insufficient, recycle the coking of lime-ash overtemperature, wearing-proof refractory material falls off at grey control valve inlet
Cause causes the blocking of ash control valve entry zone, lime-ash unsmooth flowing phenomenon, seriously affects boiler normal safe operation.And ash control
The super pressure-high temperature that is positive inside valve import recycles lime-ash, cannot achieve and manually discloses Slag treatment online.Circulation at ash control valve import valve head
Lime-ash blocking and lime-ash unsmooth flowing problem, have seriously affected the normal safe operation of circulating fluidized bed boiler.
Utility model content
The purpose of this utility model is that in view of the drawbacks of the prior art and insufficient, provide it is a kind of it is structurally reasonable, realize
Ash control valve entry zone normally fluidizes and the circulating fluidized bed boiler ash control valve anti-block apparatus of online purging, block clearing.
To achieve the goals above, the utility model uses following technical scheme:
A kind of circulating fluidized bed boiler ash control valve anti-block apparatus described in the utility model, valve body and valve including ash control valve
Head, material returning device fluidize anti-blocking component, and the adjusting port of the valve body is connect with material returning device, valve body and its inner wall for adjusting port
On be attached with refractory lining, valve head can be in transverse shifting in valve body to change valve head and adjust between port by adjusting rod
Backflow gap；The anti-blocking component of fluidisation includes compressed air pipe and purging spray gun, adjusts port and sprays equipped with several purgings
Rifle, several purging spray guns are connect by compressed air pipe with compressed gas source.
According to above scheme, several purging spray guns are distributed in the circumferential direction for adjusting port with 90 degree of angle equi-angularly spaces
On, the nozzle of the purging spray gun is embedded in refractory lining, and the injection tip of nozzle is concordant with refractory lining medial surface.
According to above scheme, the angle between injection track and the valve head cross central line of the nozzle is φ, φ >=
30°；Spacing between the crosspoint and valve head top of several nozzle injections track is L, L >=150mm.
According to above scheme, connection hose is provided between purging spray gun and the compressed air pipe.
According to above scheme, the anti-blocking component of fluidisation further includes fluidisation air piping and several fluidization hoods, several fluidisations
In material returning device inner cavity corresponding with port is adjusted, several fluidization hoods are connect by fluidizing air piping with boiler for blast cap setting.
The utility model has the beneficial effect that the utility model is structurally reasonable, realizes ash control valve entry zone and normally fluidizes
With online purging, block clearing, effective solution grey control valve import blocking and the lower unsmooth problem of ash improve ash and control the operation of valve and pacify
Complete and reliability, overall structure is simple and convenient to operate, manufacturing cost is low, practical.
Detailed description of the invention
Fig. 1 is the whole schematic cross-sectional view of the utility model；
Fig. 2 is the portion A enlarged structure schematic diagram in Fig. 1.
In figure:
1, valve body；2, material returning device；11, valve head；12, port is adjusted；13, refractory lining；31, spray gun is purged；32, compression is empty
Feed channel；33, hose is connected；34, nozzle；35, fluidization hood；36, air piping is fluidized.
Specific embodiment
The technical solution of the utility model is illustrated with embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of circulating fluidized bed boiler ash control valve anti-block apparatus described in the utility model, including ash control valve
Valve body 1 and valve head 11, material returning device 2 fluidizes anti-blocking component, and the adjusting port 12 of the valve body 1 is connect with material returning device 2, valve body 1
And its adjust and be attached with refractory lining 13 on the inner wall of port 12, valve head 11 by adjusting rod can in valve body 1 transverse shifting from
And changes valve head 11 and adjust the backflow gap between port 12；The anti-blocking component of fluidisation includes compressed air pipe 32 and blows
Spray gun 31 is swept, port 12 is adjusted and is equipped with several purging spray guns 31, several purging spray guns 31 pass through compressed air pipe 32 and pressure
The connection of contracting gas source；Under nonserviceabling, valve entry zone can be controlled to ash using the purging spray gun 31 that compressed gas source is used mixedly by power plant
Carry out online circulation lime-ash blows stifled and dredging, solves the problems, such as that ash control valve import blocking and lower ash are unsmooth, improves ash control valve
Operational safety and reliability.
Several purging spray guns 31 are distributed in the circumferential direction for adjusting port 12 with 90 degree of angle equi-angularly spaces, described to blow
The nozzle 34 for sweeping spray gun 31 is embedded in refractory lining 13, and the injection tip of nozzle 34 is concordant with 13 medial surface of refractory lining, institute
It states and is provided with four purging spray guns 31 in the circumferential direction for adjusting port 12, to realize all standing to 12 inlet port region of port is adjusted
Purging, prevent lime-ash blocking ash control valve entry zone.
Angle between 11 cross central line of injection track and valve head of the nozzle 34 is φ, φ >=40 °；It is described several
It is L, L >=150mm that nozzle 34, which sprays the spacing between 11 top of crosspoint and valve head of track,；The injection direction of the nozzle 34
The entry zone that 11 front of valve head is collected in towards the injection track of 2 inner cavity of material returning device, and several nozzles 34 prevents purging spray gun
31 compressed airs sprayed directly impact valve head 11 and refractory lining 13.
Connection hose 33, the absorbable ash of connection hose 33 are provided between the purging spray gun 31 and compressed air pipe 32
It controls the valve body 1 of valve and purges the thermal expansion of spray gun 31, pipeline is avoided to generate deformation.
The anti-blocking component of fluidisation further includes fluidisation air piping 36 and several fluidization hoods 35, and several fluidization hoods 35 are arranged
In 2 inner cavity of material returning device corresponding with port 12 is adjusted, several fluidization hoods 35 are connect by fluidizing air piping 36 with boiler；In
When normal work, fluidisation gas source of the fluidization hood 35 using boiler fluidized wind as normal operation, the fluidization hood in material returning device 2
35 can enhance the circulation lime-ash suspension fluidization of ash control valve entry zone, prevent the circulation ash deposition in the region from blocking.
The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range
The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.
Claims (5)
1. a kind of circulating fluidized bed boiler ash control valve anti-block apparatus, valve body (1) and valve head (11) including ash control valve, material returning device
(2), anti-blocking component is fluidized, it is characterised in that: the adjusting port (12) of the valve body (1) is connect with material returning device (2), valve body (1)
And its be attached with refractory lining (13) on the inner wall of adjusting port (12), valve head (11) passes through adjusting rod can be horizontal in valve body (1)
To mobile to change valve head (11) and adjust the backflow gap between port (12)；The anti-blocking component of fluidisation includes that compression is empty
Feed channel (32) and purging spray gun (31) adjust port (12) and are equipped with several purging spray guns (31), several purging spray guns (31)
It is connect by compressed air pipe (32) with compressed gas source.
2. circulating fluidized bed boiler ash control valve anti-block apparatus according to claim 1, it is characterised in that: several purgings
Spray gun (31) is distributed in the circumferential direction for adjusting port (12) with 90 degree of angle equi-angularly spaces, the nozzle of purging spray gun (31)
(34) it is embedded in refractory lining (13), the injection tip of nozzle (34) is concordant with refractory lining (13) medial surface.
3. circulating fluidized bed boiler ash control valve anti-block apparatus according to claim 2, it is characterised in that: the nozzle (34)
Injection track and valve head (11) cross central line between angle be φ, φ >=40 °；The phase of several nozzle (34) injections track
Spacing between intersection point and valve head (11) top is L, L >=150mm.
4. circulating fluidized bed boiler ash control valve anti-block apparatus according to claim 2, it is characterised in that: the purging spray gun
(31) it is provided between compressed air pipe (32) and connect hose (33).
5. circulating fluidized bed boiler ash control valve anti-block apparatus according to claim 1, it is characterised in that: the fluidisation is anti-blocking
Component further includes fluidisation air piping (36) and several fluidization hoods (35), several fluidization hoods (35) settings with adjusting port
(12) in corresponding material returning device (2) inner cavity, several fluidization hoods (35) are connect by fluidizing air piping (36) with boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145801.3U CN209688817U (en) | 2018-12-20 | 2018-12-20 | A kind of circulating fluidized bed boiler ash control valve anti-block apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145801.3U CN209688817U (en) | 2018-12-20 | 2018-12-20 | A kind of circulating fluidized bed boiler ash control valve anti-block apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209688817U true CN209688817U (en) | 2019-11-26 |
Family
ID=68596524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822145801.3U Active CN209688817U (en) | 2018-12-20 | 2018-12-20 | A kind of circulating fluidized bed boiler ash control valve anti-block apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209688817U (en) |
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2018
- 2018-12-20 CN CN201822145801.3U patent/CN209688817U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200617 Address after: 430223 Room 309, floor 3, Kaidi building, No.1, Jiangxia Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Fengying Energy Technology Engineering Co.,Ltd. Address before: 613, room 430223, Katie building, Jiangxia Road, Miao Shan Development Zone, Jiangxia District, Hubei, Wuhan Patentee before: WUHAN KAIDI ELECTRIC POWER ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right |