CN206207404U - Recirculating fluidized bed bed body and CFBB - Google Patents
Recirculating fluidized bed bed body and CFBB Download PDFInfo
- Publication number
- CN206207404U CN206207404U CN201621059171.2U CN201621059171U CN206207404U CN 206207404 U CN206207404 U CN 206207404U CN 201621059171 U CN201621059171 U CN 201621059171U CN 206207404 U CN206207404 U CN 206207404U
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- China
- Prior art keywords
- protective case
- operation element
- fluidized bed
- recirculating fluidized
- thermocouple
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- 230000003134 recirculating effect Effects 0.000 title claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 abstract description 5
- 238000005406 washing Methods 0.000 abstract description 5
- 239000011343 solid material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model is related to circulating fluidized bed technique FIELD OF THE INVENTIONThe, disclose a kind of recirculating fluidized bed bed body and CFBB, the recirculating fluidized bed bed body includes hearth wall (21), the burner hearth for being formed (20) and thermocouple (11) are enclosed by the hearth wall (21), the thermocouple (11) includes operation element (112), wherein, the recirculating fluidized bed bed body also includes protective case (10), the protective case (10) is installed on the hearth wall (21), and extend to the burner hearth (20), the operation element (112) stretches into the inside of the protective case (10).By installing the protective case (10) on hearth wall (21); then so that the operation element (112) stretches into the inside of the protective case (10); enable to the operation element (112) for stretching into the burner hearth (20) to avoid washing away for whereabouts bed, improve the service life of the thermocouple (11).
Description
Technical field
The utility model is related to circulating fluidized bed technique field, in particular it relates to a kind of recirculating fluidized bed bed body and circulation
Fluidized-bed combustion boiler.
Background technology
CFBB is fuel control to be burnt under special fluidized state in burner hearth produce setting for steam
Standby, it is the novel furnace grown up on the basis of bubbling fluidized bed boiler technology, and has installed gas-solid thing additional in furnace outlet
Material separator.The fine solid particles of discharge burner hearth are carried by flue gas, after separated device is separated, then the burning of stove interior circulation is sent back to.
CFBB can be divided into two parts：Part I is by burner hearth (also referred to as fast fluidized bed), gas-solid
Material separator, solid material recirculation device etc. are constituted, and above-mentioned part forms a solid material circulation loop.Second
It is divided into convection pass, is disposed with superheater, economizer and air preheater etc., it is close with other conventional boilers.
The burning of circulating fluidized bed boiler fuel is main to be completed in burner hearth, and fire box temperature typically can all require that control exists
It is in the prior art, basic using heat between 850~950 DEG C, it is therefore desirable to which temperature measuring equipment is set on CFBB
Galvanic couple insertion burner hearth carries out thermometric.However, due to being washed away by boiler hearth of circulating fluidized bed inside bed, thermocouple abrasion
Seriously so that the service life of thermocouple greatly reduces.
Utility model content
The purpose of this utility model is to provide a kind of recirculating fluidized bed bed body, enables to the thermoelectricity being arranged in the bed body
Even washing away from whereabouts bed, there is provided the service life of thermocouple high.
To achieve these goals, the utility model provides a kind of recirculating fluidized bed bed body, including hearth wall, by the stove
Bore wall encloses the burner hearth and thermocouple to be formed, and the thermocouple includes operation element, and the recirculating fluidized bed bed body also includes
Protective case, the protective case is installed on the hearth wall, and extends to the burner hearth, and the operation element stretches into the protection
The inside of set.
Preferably, the protective case extends to the end of the operation element or extends beyond the institute of the operation element
State end.
Preferably, the protective case is inclined near the opening of the end side, so that the part operation element is exposed.
Preferably, it is described to be open towards the bottom of the burner hearth.
Preferably, the axis of the protective case and the angle of plane where the hearth wall are 25~35 °
Preferably, the depth that the operation element stretches into the burner hearth is 120~162mm.
Preferably, the protective case is in the hollow tubular structure of both ends open.
Preferably, the thermocouple include protection pipe and flange, the protection pipe, the flange and the operation element according to
Secondary connection, the protective case is installed on the inner side of the hearth wall, and the thermocouple is fixed on the burner hearth by the flange
The outside of wall.
The utility model additionally provides a kind of CFBB, including above-mentioned recirculating fluidized bed bed body.
By installing the protective case on hearth wall, then cause that the operation element stretches into the interior of the protective case
Portion, enables to stretch into the operation element of the burner hearth under the protection of the protective case, avoids rushing for whereabouts bed
Brush, in addition, the protective case can also play certain buffer action, it is to avoid the high temperature of the burner hearth is to the straight of the thermocouple
Baking is connect, at the same time, the contact of oxidizing atmosphere and the thermocouple is also greatly reduced, so as to improve the thermocouple
Service life.
Due to employing recirculating fluidized bed bed body provided by the utility model in CFBB, therefore, carry
The service life of the thermocouple in CFBB high.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is further understood to of the present utility model for providing, and constitutes a part for specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the partial structural diagram of the recirculating fluidized bed bed body according to preferred embodiment of the present utility model；
Fig. 2 be the thermocouple in the recirculating fluidized bed bed body shown in Fig. 1 the operation element stretch into it is described
View during protective case.
Description of reference numerals
The flange of 10 protective case 111
The operation element of 11 thermocouple 112
The end of 20 burner hearth 113
The bottom of 21 hearth wall 200
100 openings
110 protection pipes
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described specific embodiment is merely to illustrate and explains the utility model, is not limited to the utility model.
The utility model provide a kind of recirculating fluidized bed bed body, as shown in Figures 1 and 2, including hearth wall 21, by stove
Bore wall 21 encloses the burner hearth 20 and thermocouple 11 to be formed, and thermocouple 11 includes operation element 112, and operation element 112 gos deep into stove
After thorax 20, the temperature of burner hearth 20 can be measured, the recirculating fluidized bed bed body also includes protective case 10, and protective case 10 is installed on stove
Bore wall 21, and extend to burner hearth 20, operation element 112 stretches into the inside of protective case 10.Protected by being installed on hearth wall 21
Sheath 10, then causes that operation element 112 stretches into the inside of protective case 10, enables to stretch into the operation element 112 of burner hearth 20
Under the protection of protective case 10, washing away for whereabouts bed is avoided, in addition, protective case 10 can also play certain buffer action,
The direct baking of the high temperature to thermocouple 11 of burner hearth 20 is avoided, at the same time, oxidizing atmosphere and thermoelectricity is also greatly reduced
Even 11 contact, so as to improve the service life of thermocouple 11.Further, since the setting of protective case 10, also reduces to heat
The repair and replacement number of times of galvanic couple 11, substantially increases operating efficiency and reduces production cost.
Specifically, thermocouple 11 can be arranged in recirculating fluidized bed bed body in the following manner：Thermocouple 11 includes protection
Pipe 110 and flange 111, wherein, protection pipe 110, flange 111 and operation element 112 are sequentially connected, and protective case 10 is installed on burner hearth
The inner side of wall 21, is provided with the mounting hole for allowing operation element 112 to pass through, the operation element 112 of thermocouple 11 on hearth wall 21
Through the mounting hole and stretch into protective case 10, then thermocouple 11 is fixed on the outside of hearth wall 21 by flange 111.
Contrasted through inventor and found, be commonly not provided with the use time of thermocouple 11 of protective case 10 not over half a year.
However, after setting protective case 10 now, the use time of thermocouple 11 is 2~3 years.
Wherein, protective case 10 may extend to the end 113 of operation element 112, and protective case 10 also can extend over work unit
The end 113 of part 112, that is to say, that operation element 112 can be entirely located in the inside of protective case 10 positioned at the part of burner hearth 20,
Such setting can further improve the service life of thermocouple 11.
In order that the operation element 112 for obtaining thermocouple 11 can more fast and accurately measure the temperature of burner hearth 20, will protect
Sheath 10 is obliquely installed near the opening 100 of the side of end 113, so that the part operation element 112 is exposed.Operation element
112 exposed parts can be selected according to the actual requirements, but in order to take into account temperature measuring efficiency and ensure making for operation element 112
With the life-span, 112 need of operation element expose very small part, can measure the temperature of burner hearth 20.It should be noted that
In actual application, after CFBB starts, when temperature rises to 200 DEG C, the thermometric of thermocouple 11 is just established
Environment.
In the above-described embodiment, it is preferable that opening 100 bottoms 200 towards burner hearth 20, therefore, especially protection
In the case that set 10 is obliquely installed so that part operation element 112 is exposed near the opening 100 of the side of end 113, operation element
112 temperature that can not only quick and precisely measure burner hearth 20, it can also be protected from washing away for whereabouts bed.In addition, also preventing
Stop whereabouts bed to fall into protective case 10, cause protective case 10 to be difficult to clear up.
In order to the active force between the bed and protective case 10 that further reduce whereabouts, installed on hearth wall 21 and protected
During sheath 10 so that the axis of protective case 10 is 25~35 ° with the angle (α is shown as in Fig. 2) of the place plane of hearth wall 21, is passed through
The setting of above-mentioned angle, greatly reduces whereabouts bed washing away to protective case 10, there is provided the service life of protective case 10, subtracts
The installation and maintenance frequency of protective case 10 is lacked.Wherein, the axis of protective case 10 can be 25 with the angle of the place plane of hearth wall 21
Any selection is carried out between~35 °, but is studied through inventor and found, 30 ° can reach best effect in angle, enable to
Whereabouts bed greatly reduces with the direct effect of impact of protective case 10.
In actual applications, operation element 112 stretches into the depth of burner hearth 20 and is commonly 50mm, but in above-mentioned depth conditions
Under, thermocouple 11 can not actual response burner hearth 20 temperature.In order to solve the above problems, when setting so that operation element
112 depth (H shown in Fig. 2) for stretching into burner hearth 20 are 120~162mm, particularly when depth is 161mm, Neng Gougeng
Plus the temperature of real reaction burner hearth 20, such that it is able to the temperature of preferably control burner hearth 20 so that CFBB
Temperature reaches required temperature.
As long as it is pointed out that protective case 10 can play the purpose of protection operation element 112, its specific shape
Shape structure can be selected according to actual conditions, it is preferable that protective case 10 is in the hollow tubular structure of both ends open, using upper two
The protective case 10 of the tubular structure of end opening, not only conveniently prepares, and can further reduce whereabouts bed with protection
Active force between set 10.When hollow tubular structure of the protective case 10 in both ends open, the external diameter of protective case 10 can be 70mm,
Internal diameter can be 50mm.In addition, the material of protective case 10 can be ZGCr25Ni20, wherein ZG represents cast steel.
The utility model additionally provides a kind of CFBB, including recirculating fluidized bed provided by the utility model
Bed body.Due to employing recirculating fluidized bed bed body provided by the utility model in CFBB, therefore improve
The service life of the thermocouple in CFBB, further, additionally it is possible to the temperature of accurate measurement burner hearth and true
The temperature of burner hearth is reacted, the operating efficiency after starting CFBB is improve.
Preferred embodiment of the present utility model is described in detail above in association with accompanying drawing, but, the utility model is not limited
Detail in above-mentioned implementation method, in range of the technology design of the present utility model, can be to skill of the present utility model
Art scheme carries out various simple variants, and these simple variants belong to protection domain of the present utility model.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, group can be by any suitable means carried out.In order to avoid unnecessary repetition, the utility model is to various
Possible combination is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the present utility model, as long as it is not disobeyed
Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.
Claims (9)
1. a kind of recirculating fluidized bed bed body, including hearth wall (21), enclosed by the hearth wall (21) burner hearth for being formed (20) with
And thermocouple (11), the thermocouple (11) includes operation element (112), it is characterised in that the recirculating fluidized bed bed body is also
Including protective case (10), the protective case (10) is installed on the hearth wall (21), and extends to the burner hearth (20), described
Operation element (112) stretches into the inside of the protective case (10).
2. recirculating fluidized bed bed body according to claim 1, it is characterised in that the protective case (10) extends to the work
The end (113) for making element (112) or the end (113) for extending beyond the operation element (112).
3. recirculating fluidized bed bed body according to claim 2, it is characterised in that the protective case (10) is near the end
(113) opening (100) of side inclines, so that the part operation element (112) is exposed.
4. recirculating fluidized bed bed body according to claim 3, it is characterised in that the opening (100) is towards the burner hearth
(20) bottom (200).
5. recirculating fluidized bed bed body according to claim 1, it is characterised in that the axis of the protective case (10) with it is described
The angle of plane is 25~35 ° where hearth wall (21).
6. recirculating fluidized bed bed body according to claim 1, it is characterised in that the operation element (112) is stretched into described
Depth in burner hearth (20) is 120~162mm.
7. recirculating fluidized bed bed body according to claim 1, it is characterised in that the protective case (10) is in both ends open
Hollow tubular structure.
8. recirculating fluidized bed bed body according to claim 1, it is characterised in that the thermocouple (11) is including protection pipe
(110) and flange (111), the protection pipe (110), the flange (111) and the operation element (112) are sequentially connected, institute
The inner side that protective case (10) is installed on the hearth wall (21) is stated, the thermocouple (11) is fixed on by the flange (111)
The outside of the hearth wall (21).
9. a kind of CFBB, it is characterised in that including ciculation fluidized described in any one in claim 1~8
Bed bed body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621059171.2U CN206207404U (en) | 2016-09-14 | 2016-09-14 | Recirculating fluidized bed bed body and CFBB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621059171.2U CN206207404U (en) | 2016-09-14 | 2016-09-14 | Recirculating fluidized bed bed body and CFBB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206207404U true CN206207404U (en) | 2017-05-31 |
Family
ID=58760373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621059171.2U Active CN206207404U (en) | 2016-09-14 | 2016-09-14 | Recirculating fluidized bed bed body and CFBB |
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| Country | Link |
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| CN (1) | CN206207404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195475A (en) * | 2018-02-07 | 2018-06-22 | 无锡华光锅炉股份有限公司 | A kind of mounting structure of hearth thermocouple |
-
2016
- 2016-09-14 CN CN201621059171.2U patent/CN206207404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195475A (en) * | 2018-02-07 | 2018-06-22 | 无锡华光锅炉股份有限公司 | A kind of mounting structure of hearth thermocouple |
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