CN104930501A - Circulating fluidized bed boiler and assembly thereof - Google Patents
Circulating fluidized bed boiler and assembly thereof Download PDFInfo
- Publication number
- CN104930501A CN104930501A CN201410120716.5A CN201410120716A CN104930501A CN 104930501 A CN104930501 A CN 104930501A CN 201410120716 A CN201410120716 A CN 201410120716A CN 104930501 A CN104930501 A CN 104930501A
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- CN
- China
- Prior art keywords
- blast cap
- cfbb
- pipe
- blast
- assembly
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention discloses an assembly of a circulating fluidized bed boiler. The assembly comprises a wind cap and an air inlet pipe. The wind cap comprises a wind cap top and a wind cap bottom, and a through hole in the wind cap bottom is communicated with an inner cavity of the wind cap; a plurality of air outlets are formed in the side wall, close to the wind cap bottom, of the wind cap at intervals, and the air outlets are communicated with the inner cavity; one end, away from an air inlet of the air inlet pipe, of the air inlet pipe is provided with a wind cap casing pipe connected with a main body portion of the air inlet pipe into a whole, and the air inlet pipe is detachably and tightly sleeved with the wind cap; the wind cap casing pipe is inserted in the inner cavity of the wind cap, and blind seal design is adopted in the top end of the wind cap casing pipe; and a plurality of air outlets are formed in the side wall, close to the top end of the wind cap casing pipe, of the wind cap casing pipe, and the air outlets are communicated with the air inlet. The invention further discloses the circulating fluidized bed boiler. By means of the manner, the air inlet pipe can be detachably and tightly sleeved with the wind cap, and falling of the wind cap and abrasion caused by ash leakage can be avoided; and the assembly is simple in structure and convenient to manufacture, and the design cost is effectively reduced.
Description
Technical field
The present invention relates to Combustion technology of circulating fluidized field, particularly relate to a kind of CFBB assembly and apply the CFBB of this assembly.
Background technology
Along with the development of Technology of Circulating Fluidized Bed Boiler, many large circulating fluidized bed boilers are put into commercial operation.Wherein, can whether the fluidisation of CFBB be even and damage the efficiency that directly will affect its burning by heat resistant and wear resistant, blast cap is the vitals of CFBB, which determine CFBB whether can safely, economical and stably run.Screwing type bell jar head blast cap produced problem in actual motion of current employing is more, and mainly screwing type bell jar head blast cap easily comes off, thus makes blast cap casing wear.In addition, the air outlet of screwing type bell jar head blast cap often occurs that stifled slag easily causes fluidisation uneven, aweather indoorly can leak ash in a large number and cause the even broken pipe of boiler tube inordinate wear simultaneously, thus causing the safe and stable operation cycle of CFBB short high with the cost of overhaul.
In sum, be necessary that the CFBB providing a kind of CFBB assembly and apply this assembly is to solve the problem.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of CFBB assembly and applies the CFBB of this assembly, the present invention can avoid coming off of blast cap and leak the grey wearing and tearing caused, and this modular construction is simple and easy to make, effectively reduces design cost.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of CFBB assembly, this assembly comprises: blast cap, inner chamber is provided with in blast cap, blast cap comprises bottom blast cap top and blast cap, is provided with through hole bottom blast cap, through hole and inner space, and sidewall bottom contiguous blast cap is interval with multiple air outlet, air outlet and inner space; Blast pipe, one end of the main part of blast pipe is provided with air inlet, and blast pipe is provided with the blast cap sleeve pipe be connected as a single entity with the main part of blast pipe in the one end away from its air inlet; Wherein, blast cap is removably closely set in the outside of blast pipe, and the through hole of blast cap sleeve pipe bottom blast cap is plugged in the inner chamber of blast cap, and the top of blast cap sleeve pipe adopts blind envelope to design, blast cap sleeve pipe is provided with multiple exhaust vent on the sidewall near its top, and exhaust vent is communicated with air inlet.
Wherein, the main part of blast pipe and through hole are threaded connection realization and removably closely cooperate.
Wherein, the main part of blast pipe is provided with external screw thread, and through hole is provided with internal thread, and external screw thread and internal thread are threaded.
Wherein, the main part of blast pipe comprises the first body and the second body, and the first body, between blast cap sleeve pipe and the second body, the first body is provided with the screw thread matched with through hole, and the diameter of the first body is greater than the diameter of blast cap sleeve pipe.
Wherein, this assembly also comprises the cast bed of material and the adiabatic bed of material, and the main part of blast pipe is successively through the cast bed of material and the adiabatic bed of material.
Wherein, assembly also comprises fixed structure, and fixed structure closely cooperates with main part and the adiabatic bed of material respectively.
Wherein, fixed structure is fixed cover, and fixed cover is closely cooperated with main part and the adiabatic bed of material respectively by welding.
Wherein, blast pipe is cylindric, and inner chamber is cylindrical hole, and the diameter of inner chamber is greater than the diameter of through hole.
Wherein, on the sidewall of blast cap, the setting direction of air outlet is vertical with the setting direction of through hole.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of CFBB, and CFBB comprises the CFBB assembly of any one of the claims.
The invention has the beneficial effects as follows: the situation being different from prior art, blast pipe in CFBB assembly of the present invention is provided with the blast cap sleeve pipe be connected as a single entity with the main part of blast pipe in the one end away from its air inlet, be integrated by blast cap sleeve pipe and blast pipe are designed and produced dexterously, even if in making to run from now on there is absent-mindedness and also there will not be blast cap to come off and blast cap casing wear in screw thread, when changing assembly, only blast cap need be backed out, without the need to changing blast cap sleeve pipe, the easy of installation can be improved; On the other hand, the through hole of blast cap sleeve pipe bottom blast cap is plugged in the inner chamber of blast cap, the top of blast cap sleeve pipe adopts blind envelope to design, blast cap is removably closely set in the outside of blast pipe, because blast cap sleeve pipe height goes directly blast cap top, even if occur that thread abrasion lost efficacy also can avoid coming off and then causing the wearing and tearing of blast cap sleeve pipe and leak to air compartment the boiler tube wear that ash causes in a large number of blast cap completely; In addition, structure of the present invention is simple and easy to make, effectively can reduce design cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of CFBB assembly of the present invention;
Fig. 2 is the structural representation of the blast cap of CFBB assembly in Fig. 1;
Fig. 3 is the structural representation of the blast pipe of CFBB assembly in Fig. 1.
Detailed description of the invention
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Please also refer to Fig. 1-Fig. 3, the present invention discloses a kind of CFBB assembly, and CFBB assembly comprises blast cap 11, blast pipe 12, the cast bed of material 13, the adiabatic bed of material 14 and fixed structure 15.Wherein, blast cap 11 is removably closely set in the outside of blast pipe 12.
Be provided with inner chamber 111 in blast cap 11, the outer cover of blast cap 11 is cylinder bell shape, and the outer wall upper part of blast cap 11 is outer-hexagonal shape, and the outer wall lower part of blast cap 11 is cylindrical.Blast cap 11 to comprise bottom blast cap top 112 and blast cap 113, and bottom blast cap, 113 are provided with through hole 114, and through hole 114 is communicated with inner chamber 111, and bottom contiguous blast cap 113 sidewall on be interval with multiple air outlet 115, air outlet 115 is communicated with inner chamber 111.In the present embodiment, through hole 114 is preferably provided with internal thread 1141.
In the present embodiment, on the sidewall of blast cap 11, the setting direction of air outlet 115 is vertical with the setting direction of through hole 114.Certainly, in other embodiments, the setting direction of air outlet 115 can also be inclined on the sidewall of blast cap 11, and concrete needs determines according to actual design.
In the present embodiment, the height D1 of blast cap 11 is preferably 175mm, outer wall upper part is that the diameter D2 of outer-hexagonal shape is preferably 113mm, the diameter D3 of inner chamber 111 is preferably 95mm, the cylindrical diameter D4 of lower part of blast cap 11 is preferably 148mm, and the diameter D5 of air outlet 115 is preferably 22mm.Wherein, air outlet 115 is preferably 8, and certainly, in other embodiments, the concrete number of air outlet 115 can specific design as required.Bottom the central point distance blast cap of air outlet 115, the distance D6 of 113 is 22mm, and the height D7 of through hole 114 is preferably 18mm.Certainly, the size of the above-mentioned parts of blast cap 11 is not limited in above-mentioned concrete size, can also be specific design according to actual needs.In addition, the concrete size of the building block do not related to for above-mentioned blast cap 11 also can specific design according to actual needs.
The blast cap sleeve pipe 122 that blast pipe 12 comprises main part 123 and is connected with the main part 123 of blast pipe 12.Wherein, blast pipe 12 is provided with air inlet 121, and blast pipe 12 is provided with away from one end of its air inlet 121 the blast cap sleeve pipe 122 be connected as a single entity with the main part 123 of blast pipe 12.Shown in Fig. 1, blast cap sleeve pipe 122 bottom blast cap 113 through hole 114 be plugged in the inner chamber 111 of blast cap 11, and the top 124 of blast cap sleeve pipe 122 adopts blind envelope to design.In addition, the inner top surface 116 at blast cap sleeve pipe 122 and blast cap top 112 closely cooperates, i.e. the highly through blast cap top 112 of blast cap sleeve pipe 122.Blast cap sleeve pipe 122 is provided with multiple exhaust vent 125 on the sidewall near its top 124, and exhaust vent 125 is communicated with air inlet 121.
In the present embodiment, the main part 123 of blast pipe 12 is provided with external screw thread 126, and the main part 123 of blast pipe 12 is threaded by external screw thread 126 and internal thread 1141 with through hole 114.Certainly, in other embodiments, the main part 123 of blast pipe 12 can also arrange other structures and is fixedly connected with through hole 114.
Wherein, the main part 123 of blast pipe 12 comprises the first body 1231 and the second body 1232, first body 1231 is between blast cap sleeve pipe 122 and the second body 1232, first body 1231 is provided with the screw thread matched with through hole 114, the first body 1231 and through hole 114 are threaded connection realization and removably closely cooperate.
In the present embodiment, blast pipe 12 is in cylindric, and the inner chamber 111 of blast cap 11 is in cylindrical hole, and the diameter of inner chamber 111 is greater than the diameter of through hole 114, and the diameter of the first body 1231 is greater than the diameter of blast cap sleeve pipe 122.
In the present embodiment, the length d1 of blast pipe 12 is 540mm, and the length d2 of blast cap sleeve pipe 122 is 130mm, and the diameter d 4 of blast cap sleeve pipe 122 is 70mm, and top 124 thickness d 8 of blast cap sleeve pipe 122 is 8mm.The diameter d 5 of the first body 1231 is 72.5mm, and the diameter d 7 of the second body 1232 is 72mm, and the diameter d 6 of air inlet 121 is 56mm.The diameter of exhaust vent 125 is 12.5mm, and the number of exhaust vent 125 is preferably 40, certainly, can also design the number of air holes 125 according to actual needs.Exhaust vent 125 points of different interval are arranged on the sidewall on the top 124 of blast cap sleeve pipe 122, wherein the distance d9 on the top 124 of the central point distance blast cap sleeve pipe 122 of first exhaust vent 125 is 16mm, and the distance d10 on the top 124 of the central point distance blast cap sleeve pipe 122 of the exhaust vent 125 of second batch is 28mm.
In the present embodiment, the length d3 of the external screw thread 126 on the first body 1231 is preferably greater than the height D7 of through hole 114, has enough spaces to be threaded to make the external screw thread 126 on the first body 1231 and through hole 114.Preferably, the length d3 of the external screw thread 126 on the first body 1231 is 50mm.
In the present embodiment, main part 123 and the blast cap sleeve pipe 122 of blast pipe 12 are connected, certainly, the main part 123 of blast cap sleeve pipe 122 and blast pipe 12 is such as connected by integral molding techniques, and the structural design of knot integration makes anatomical connectivity reliable, non-loosening, and threaded portion is not oxidizable, replacing parts are few, are easy to dismounting, and airduct can ensure Long-Time Service.In addition, in other embodiments, can also by the outer wall that blast cap sleeve pipe 122 is set in the main part 123 of blast pipe 12 and and the main body 123 of blast pipe 12 one-body molded, or the main part 123 of blast pipe 12 to be plugged on blast cap sleeve pipe 122 also and blast cap sleeve pipe 122 one-body molded.
Should understand, the size specifically enumerated in previous embodiment of the present invention, component shape are and illustrate, the present invention is not as limit, and the technical scheme that those skilled in the art can disclose according to the present invention adopts different sizes according to actual demand or is transformed to other component shapes in actual applications.
Mounting means and the operation principle of CFBB assembly are described below in conjunction with embodiment.
When installing CFBB assembly, the main part 123 of blast pipe 12 is successively through the cast bed of material 13 and the adiabatic bed of material 14.Fixed structure 15 closely cooperates with main part 123 and the adiabatic bed of material 14 respectively.Specifically, fixed structure 15 is fixed cover, and fixed cover is closely cooperated with main part 123 and the adiabatic bed of material 14 respectively by welding.Or fixed structure 15 comprises fixed cover 151 and solder joint 152.Fixed cover 151 is fixedly connected with solder joint 152, and fixed cover 151 to be set on blast pipe 12 and to be fixedly connected with the adiabatic bed of material 14 with blast pipe 12 respectively by solder joint 152.Boiler tube 16 is arranged on the side of the adiabatic bed of material 14.
Blast cap 11 is threaded with the external screw thread 126 of blast pipe 12 by through hole 114, and blast cap 11 is fixedly connected with blast pipe 12, avoids the possibility come off to air compartment leakage ash and blast cap 11.
When changing CFBB assembly, only need to back out blast cap 11 on blast pipe 12, change an other blast cap 11, the replacing of CFBB assembly can being realized, without the need to changing miscellaneous part, effectively promoting operating efficiency.
The present invention also discloses a kind of CFBB, and this boiler comprises above-mentioned CFBB assembly.
CFBB assembly of the present invention achieves noticeable achievement in preliminary test uses, and its Apoplexy cap 11 from without to come off and air compartment does not leak ash, thus ensure that the long-term safe and stable operation continuously of boiler from source.Application the present invention, when installing or change not only without the need to the consumption of carbon-point, welding rod and the electric energy needed for plane, weldering, and do not need to cut castable, greatly reduce working service cost and the labour intensity of user, particularly save maintenance and furnace outage time, increase work efficiency, bring significant economic benefit to enterprise.The present invention can be widely used in the multi-form CFB(Circulating Fluidized Bed that different manufacturers is produced, CFBB), be the development of CFB siege blast cap.
In sum, blast pipe in CFBB assembly of the present invention is provided with the blast cap sleeve pipe be connected as a single entity with the main part of blast pipe in the one end away from its air inlet, be integrated by blast cap sleeve pipe and blast pipe are designed and produced dexterously, even if in making to run from now on there is absent-mindedness and also there will not be blast cap to come off and blast cap casing wear in screw thread, when changing assembly, only need backing out blast cap, without the need to changing blast cap sleeve pipe, the easy of installation can be improved; On the other hand, the through hole of blast cap sleeve pipe bottom blast cap is plugged in the inner chamber of blast cap, the top of blast cap sleeve pipe adopts blind envelope to design, blast cap is removably closely set in the outside of blast pipe, because blast cap sleeve pipe height goes directly blast cap top, even if occur that thread abrasion lost efficacy also can avoid coming off and then causing the wearing and tearing of blast cap sleeve pipe and leak to air compartment the boiler tube wear that ash causes in a large number of blast cap completely; In addition, structure of the present invention is simple and easy to make, effectively can reduce design cost.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a CFBB assembly, is characterized in that, described assembly comprises:
Blast cap, is provided with inner chamber in described blast cap, and described blast cap comprises bottom blast cap top and blast cap, through hole is provided with bottom described blast cap, described through hole and described inner space, and sidewall bottom contiguous described blast cap is interval with multiple air outlet, described air outlet and described inner space;
Blast pipe, one end of the main part of described blast pipe is provided with air inlet, and described blast pipe is provided with the blast cap sleeve pipe be connected as a single entity with the main part of described blast pipe in the one end away from described air inlet;
Wherein, described blast cap is removably closely set in the outside of described blast pipe, the described through hole of described blast cap sleeve pipe bottom described blast cap is plugged in the inner chamber of described blast cap, and the top of described blast cap sleeve pipe adopts blind envelope to design, described blast cap sleeve pipe is provided with multiple exhaust vent on the sidewall near top described in it, and described exhaust vent is communicated with described air inlet.
2. CFBB assembly according to claim 1, is characterized in that, the main part of described blast pipe and described through hole are threaded connection realization and removably closely cooperate.
3. CFBB assembly according to claim 2, is characterized in that, the main part of described blast pipe is provided with external screw thread, and described through hole is provided with internal thread, and described external screw thread and described internal thread are threaded.
4. CFBB assembly according to claim 2, it is characterized in that, the main part of described blast pipe comprises the first body and the second body, described first body is between described blast cap sleeve pipe and described second body, described first body is provided with the screw thread matched with described through hole, and the diameter of described first body is greater than the diameter of described blast cap sleeve pipe.
5. CFBB assembly according to claim 2, is characterized in that, described assembly also comprises the cast bed of material and the adiabatic bed of material, and the main part of described blast pipe is successively through the described cast bed of material and the described adiabatic bed of material.
6. CFBB assembly according to claim 5, is characterized in that, described assembly also comprises fixed structure, and described fixed structure closely cooperates with described main part and the described adiabatic bed of material respectively.
7. CFBB assembly according to claim 6, is characterized in that, described fixed structure is fixed cover, and described fixed cover is closely cooperated with described main part and the described adiabatic bed of material respectively by welding.
8. CFBB assembly according to claim 1, is characterized in that, described blast pipe is cylindric, and described inner chamber is cylindrical hole, and the diameter of described inner chamber is greater than the diameter of described through hole.
9. CFBB assembly according to claim 1, is characterized in that, on the sidewall of described blast cap, the setting direction of described air outlet is vertical with the setting direction of described through hole.
10. a CFBB, is characterized in that, described CFBB comprises the CFBB assembly described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120716.5A CN104930501A (en) | 2014-03-18 | 2014-03-27 | Circulating fluidized bed boiler and assembly thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410100103 | 2014-03-18 | ||
| CN2014101001035 | 2014-03-18 | ||
| CN201410120716.5A CN104930501A (en) | 2014-03-18 | 2014-03-27 | Circulating fluidized bed boiler and assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104930501A true CN104930501A (en) | 2015-09-23 |
Family
ID=51924499
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420144020.1U Expired - Fee Related CN203963920U (en) | 2014-03-18 | 2014-03-27 | CFBB and assembly thereof |
| CN201410120716.5A Pending CN104930501A (en) | 2014-03-18 | 2014-03-27 | Circulating fluidized bed boiler and assembly thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420144020.1U Expired - Fee Related CN203963920U (en) | 2014-03-18 | 2014-03-27 | CFBB and assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN203963920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065857A (en) * | 2017-08-30 | 2020-04-24 | 三菱日立电力系统株式会社 | Air nozzle, outer cylinder, boiler, power generation system, and method for replacing outer cylinder of air nozzle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852902A (en) * | 2019-04-28 | 2020-10-30 | 无锡小天鹅电器有限公司 | Fan and washing equipment with same |
-
2014
- 2014-03-27 CN CN201420144020.1U patent/CN203963920U/en not_active Expired - Fee Related
- 2014-03-27 CN CN201410120716.5A patent/CN104930501A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065857A (en) * | 2017-08-30 | 2020-04-24 | 三菱日立电力系统株式会社 | Air nozzle, outer cylinder, boiler, power generation system, and method for replacing outer cylinder of air nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203963920U (en) | 2014-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150923 |
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| WD01 | Invention patent application deemed withdrawn after publication |