CN210951291U

CN210951291U - Automatic bed material adding system for external bed of circulating fluidized bed boiler

Info

Publication number: CN210951291U
Application number: CN201921814816.2U
Authority: CN
Inventors: 刘红刚; 乔岗杰; 武建芳; 曹全福; 丁祎; 王亚琴; 胡金彪; 尉万红; 赵云凯; 葛如明
Original assignee: SHANXI PINGSHUO COAL GANGUE POWER GENERATION CO Ltd
Current assignee: SHANXI PINGSHUO COAL GANGUE POWER GENERATION CO Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-07-07
Anticipated expiration: 2029-10-25

Abstract

The utility model belongs to thermal power equipment field, especially, automatic bed material system of installing additional of external bed of circulating fluidized bed boiler, can only recycle the part at subaerial bed material to current emission, it is extravagant great, and in bagging-off in-process difficult free raise dust, be unfavorable for the problem of environmental protection, the scheme as follows now is proposed, it includes cinder storehouse platform and external bed, the top of cinder storehouse platform is equipped with the cinder storehouse, one side of cinder storehouse is equipped with the one end of pipeline, the other end of pipeline is connected with pneumatic dome valve, be equipped with the storehouse pump on the pneumatic dome valve, the intercommunication has the blast pipe between cinder storehouse and the storehouse pump, the outer wall of blast pipe is provided with the valve, the other end of first pipeline is connected on external bed, and be equipped with first manual picture peg on the first pipeline, the one end of second pipeline is installed to the bottom of external bed. The utility model discloses, through the automatic bed material of installing additional of external bed, effectively improve the bed material and install speed additional, save time.

Description

Automatic bed material adding system for external bed of circulating fluidized bed boiler

Technical Field

The utility model relates to a thermal power equipment technical field especially relates to an automatic bed material system of installing additional of circulating fluidized bed boiler outer bed.

Background

The circulating fluidized bed boiler adopts fluidized combustion, is a clean coal combustion technology with high industrialization degree, has the advantages of wide fuel adaptability, high combustion efficiency, high-efficiency desulfurization, low NOx emission, simple structure, convenient operation and the like, and is widely applied nationwide.

When the circulating fluidized bed boiler is stopped for maintenance, bed materials of the external bed and the boiler are all discharged according to maintenance requirements so as to be convenient for maintenance of the external bed, a boiler hood and the like, however, a certain amount of bed materials are required to be additionally arranged on the external bed and a boiler hearth to serve as ignition starting bed materials when the boiler is started. At present, 1060t/h circulating fluidized bed boilers of our company have 4 external beds, all bed materials are discharged on the ground through an accident ash discharging port when the boiler is stopped for maintenance, but the bed materials are required to be added for about 500t when the boiler is started. The mode of additionally installing the bed material on the original external bed is manually additionally installed, namely, part of the available bed material on the ground is recycled and discharged or bottom slag is taken from a slag bin, the bed material is conveyed to an external bed manhole after being bagged, the bed material is poured into the external bed manhole manually, the time for additionally installing the bed material generally needs 2-3 days, the workload of personnel is large, and the time for starting and preparing the unit is seriously influenced. In addition, the bed materials discharged on the ground can only be recycled, so that the waste is large, and the raising dust is inevitably generated in the bagging process, which is not beneficial to environmental protection.

The utility model provides an automatic bed material system of installing additional of circulating fluidized bed external bed through the automatic bed material of installing additional of external bed, effectively improves the bed material and installs speed additional, and save time reduces the cost of labor, and the original bed material of make full use of simultaneously avoids the production of raise dust, reduces extravagantly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems that the prior art has the problem that the discharged bed material on the ground can only be recycled, the waste is large, the dust is inevitably generated in the bagging process, and the environmental protection defect is not facilitated, and the automatic bed material adding system of the external bed of the circulating fluidized bed boiler is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic loading bed material system of an external bed of a circulating fluidized bed boiler comprises a slag storage platform and an external bed, wherein a slag bin is arranged at the top of the slag storage platform, one end of a pipeline is arranged on one side of the slag bin, the other end of the pipeline is connected with a pneumatic dome valve, a bin pump is arranged on the pneumatic dome valve, an exhaust pipe is communicated between the slag bin and the bin pump, a valve is arranged on the outer wall of the exhaust pipe, a fourth pneumatic inserting plate is arranged on the pipeline, a material level meter is arranged on the bin pump, the bottom of the bin pump is connected with a first pipeline, the other end of the first pipeline is connected to the external bed, a first manual inserting plate is arranged on the first pipeline, one end of a second pipeline is arranged at the bottom of the external bed, the other end of the second pipeline is connected with a slag conveying machine, a second manual inserting plate is arranged on the second pipeline, a bucket elevator is arranged below the slag conveying machine, the bucket elevator extends to the upper, and a stop valve and a pneumatic valve are arranged on the first pipeline, and the stop valve and the pneumatic valve are positioned between an air source of the air compressor and the bin pump.

Preferably, the top of cinder house platform is equipped with first passageway, and first pipe connection is on the cinder house, is equipped with manual picture peg of third and first pneumatic picture peg on the first passageway, and first pneumatic picture peg is located the below of the manual picture peg of third, owing to be provided with the manual picture peg of third, can control first passageway through the insertion and the shifting out of the manual picture peg of third.

Preferably, the top of cinder house platform is equipped with the second passageway, and the second pipe connection is on the cinder house, is equipped with fourth manual picture peg and the pneumatic picture peg of second on the second pipeline, and the pneumatic picture peg of second is located the below of fourth manual picture peg, owing to be provided with the manual picture peg of fourth, can control the second passageway through the manual picture peg of fourth.

Preferably, the top of slag storage platform is equipped with the third passageway, and the third pipe connection is on the slag storage, is equipped with fifth manual picture peg and third pneumatic picture peg on the third pipeline, and the third pneumatic picture peg is located the below of fifth manual picture peg, owing to be provided with fifth manual picture peg, can control the third passageway through fifth manual picture peg.

In the utility model, the automatic bed material adding system of the external bed of the circulating fluidized bed boiler fully utilizes the original bed material of the external bed, and the original bed material is temporarily stored in the slag bin during the maintenance period of the external bed; when bed materials are additionally arranged, the bed materials temporarily stored in the slag bin are conveyed to the external bed in a pneumatic conveying mode, so that the cyclic utilization of the bed materials is realized, the generation of raised dust is avoided, the labor intensity of manual carrying and the like is reduced, the set starting preparation time is greatly saved, and the bed material adding cost of the external bed is saved.

The utility model relates to a rationally, through the automatic bed material of installing additional of external bed, effectively improve the bed material and install speed additional, save time reduces the cost of labor, and the original bed material of make full use of simultaneously avoids the production of raise dust, reduces extravagantly.

Drawings

Fig. 1 is a schematic structural view of an automatic bed material adding system of an external bed of a circulating fluidized bed boiler provided by the utility model.

In the figure: 1. a slag bin; 2. a pipeline; 3. a fourth pneumatic plugboard; 4. a pneumatic dome valve; 5. a bin pump; 6. a level gauge; 7. an air source of an air compressor; 8. a stop valve; 9. a pneumatic valve; 10. an external bed; 11. a first manual board plug; 12. a second manual board inserting; 13. a slag conveyor; 14. a bucket elevator; 15. a third manual board inserting; 16. a first pneumatic plugboard; 17. a fourth manual board inserting; 18. a second pneumatic plugboard; 19. a fifth manual board inserting; 20. a third pneumatic plugboard; 21. a slag storage platform.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, an automatic bed material adding system of an external bed of a circulating fluidized bed boiler comprises a slag storage platform 21 and an external bed 10, wherein a slag bin 1 is arranged at the top of the slag storage platform 21, one end of a pipeline 2 is arranged at one side of the slag bin 1, the other end of the pipeline 2 is connected with a pneumatic dome valve 4, a bin pump 5 is arranged on the pneumatic dome valve 4, an exhaust pipe 22 is communicated between the slag bin 1 and the bin pump 5, a valve is arranged on the outer wall of the exhaust pipe 22, due to the fact that the bin pump 5 is arranged, bed materials temporarily stored in the slag bin 1 are conveyed into the external bed 10 in a pneumatic conveying mode, through the arrangement of the exhaust pipe 22, the exhaust pipe 22 exhausts the gas generated in the bin pump 5 out of the slag bin 1, a fourth pneumatic inserting plate 3 is arranged on the pipeline 2, a material level meter 6 is arranged on the bin pump 5, the bed materials can be checked conveniently through the material level meter 6, the bottom of the bin pump 5 is connected with a first pipeline, and be equipped with first manual picture peg 11 on the first pipeline for external bed 10, the one end of second pipeline is installed to the bottom of external bed 10, the other end of second pipeline is connected with defeated sediment machine 13, and be equipped with the manual picture peg 12 of second on the second pipeline, through the manual picture peg 12 of second, the second pipeline can be opened, make the bed material in external bed 10 discharge to defeated sediment machine 13 through the second pipeline, the below of defeated sediment machine 13 is equipped with bucket lifting elevator 14, and bucket lifting elevator 14 extends to the top of sediment storehouse 1, owing to be provided with bucket lifting elevator 14, can be in the sediment storehouse 1 is carried to the bed material that defeated sediment machine 13 output, the other end of first pipeline is connected with air compressor machine air supply 7, be equipped with stop valve 8 and pneumatic valve 9 on the first pipeline, and stop valve 8 and pneumatic valve 9 are located between air compressor machine air supply 7 and storehouse pump 5.

The utility model discloses in, the top of cinder house platform 21 is equipped with first passageway, and first pipe connection is on cinder house 1, is equipped with the manual picture peg 15 of third and first pneumatic picture peg 16 on the first passageway, and first pneumatic picture peg 16 is located the below of the manual picture peg 15 of third, owing to be provided with the manual picture peg 15 of third, can control first passageway through inserting and shifting out of the manual picture peg 15 of third.

The utility model discloses in, the top of cinder house platform 21 is equipped with the second passageway, and the second pipe connection is on cinder house 1, is equipped with the manual picture peg 17 of fourth and the pneumatic picture peg 18 of second on the second pipeline, and the pneumatic picture peg 18 of second is located the below of the manual picture peg 17 of fourth, owing to be provided with the manual picture peg 17 of fourth, can control the second passageway through the manual picture peg 17 of fourth.

The utility model discloses in, the top of cinder house platform 21 is equipped with the third passageway, and the third pipe connection is on cinder house 1, is equipped with the pneumatic picture peg 20 of fifth manual picture peg 19 and third on the third pipeline, and the pneumatic picture peg 20 of third is located the below of the manual picture peg 19 of fifth, owing to be provided with the manual picture peg 19 of fifth, can control the third passageway through the manual picture peg 19 of fifth.

The utility model discloses in, when shutting down the maintenance, when cooling the bed material in the external bed 10 to about 170 ℃, open the manual picture peg 12 of second, make the bed material in the external bed 10 arrange to defeated sediment machine 13 through the second pipeline to carry to original sediment storehouse 1 in through bucket elevator 14. During the unit starts preparation, when external bed 10 need install bed material additional, open fourth pneumatic picture peg 3, open pneumatic dome valve 4, the bed material that will keep in slag silo 1 falls into newly-increased storehouse pump 5 through pipeline 2, open stop valve 8 and pneumatic valve 9, through the pneumatic conveying mode through transporting the bed material to external bed 10 in, realize the cyclic utilization and the automatic device that installs additional of external bed 10 bed material, the bed material is installed the back that finishes additional, close fourth pneumatic picture peg 3 and pneumatic dome valve 4, close stop valve 8 and pneumatic valve 9, do not influence the use of boiler slag silo 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an automatic bed material system of loading additional of circulating fluidized bed boiler outer bed, including slag storehouse platform (21) and external bed (10), a serial communication port, the top of slag storehouse platform (21) is equipped with slag storehouse (1), one side of slag storehouse (1) is equipped with the one end of pipeline (2), the other end of pipeline (2) is connected with pneumatic dome valve (4), be equipped with bin pump (5) on pneumatic dome valve (4), intercommunication has blast pipe (22) between slag storehouse (1) and bin pump (5), the outer wall of blast pipe (22) is provided with the valve, be equipped with fourth pneumatic picture peg (3) on pipeline (2), be equipped with charge level indicator (6) on bin pump (5), the bottom of bin pump (5) is connected with first pipeline, the other end of first pipeline is connected on external bed (10), and be equipped with first manual picture peg (11) on the first pipeline, the one end of second pipeline is installed to the bottom of external bed (10), the other end of second pipeline is connected with defeated sediment machine (13), and is equipped with the manual picture peg (12) of second on the second pipeline, the below of defeated sediment machine (13) is equipped with bucket lifting type lifting machine (14), and bucket lifting type lifting machine (14) extend to the top in sediment storehouse (1), the other end of first pipeline is connected with air compressor machine air supply (7), be equipped with stop valve (8) and pneumatic valve (9) on the first pipeline, and stop valve (8) and pneumatic valve (9) are located between air compressor machine air supply (7) and storehouse pump (5).

2. The automatic feeding system of the external bed of the circulating fluidized bed boiler as recited in claim 1, wherein a first channel is arranged above the slag storage platform (21), the first pipeline is connected to the slag storage (1), a third manual insertion plate (15) and a first pneumatic insertion plate (16) are arranged on the first channel, and the first pneumatic insertion plate (16) is positioned below the third manual insertion plate (15).

3. The automatic feeding system of the external bed of the circulating fluidized bed boiler as recited in claim 1, wherein a second channel is provided above the slag storage platform (21), a second pipeline is connected to the slag storage (1), a fourth manual insertion plate (17) and a second pneumatic insertion plate (18) are provided on the second pipeline, and the second pneumatic insertion plate (18) is located below the fourth manual insertion plate (17).

4. The automatic feeding system of the external bed of the circulating fluidized bed boiler as recited in claim 1, wherein a third channel is arranged above the slag storage platform (21), the third channel is connected to the slag storage (1), a fifth manual insertion plate (19) and a third pneumatic insertion plate (20) are arranged on the third channel, and the third pneumatic insertion plate (20) is positioned below the fifth manual insertion plate (19).