CN206831550U - A kind of compact pulverized coal distributor - Google Patents
A kind of compact pulverized coal distributor Download PDFInfo
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- CN206831550U CN206831550U CN201720669480.XU CN201720669480U CN206831550U CN 206831550 U CN206831550 U CN 206831550U CN 201720669480 U CN201720669480 U CN 201720669480U CN 206831550 U CN206831550 U CN 206831550U
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- pulverized coal
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Abstract
The utility model discloses a kind of compact pulverized coal distributor, including base and the annular coal powder distributor case being fixed on base, base is fixed on the exit of external separator for coal mill, the entrance of base is connected with the outlet of external separator for coal mill, annular coal powder distributor case is divided into some warehouses, the bottom inlet of each warehouse is connected with the outlet of base top, the top exit of each warehouse, which is sequentially connected, is connected with resistance adjusting tank and flour extraction pipe, the dispensing arrangement is compact, occupies little space, and the air quantity of primary air piping and coal powder distribation deviation are smaller.
Description
Technical field
The utility model belongs to Dual-Phrase Distribution of Gas olid transportation art, is related to a kind of distributor, and in particular to a kind of compact moulded coal
Powder distributor.
Background technology
Modern large-scale coal-fired power station boiler uses medium-speed pulverizer unit pulverized-coal system more, and generally every coal pulverizer is simultaneously to more
Individual burner provides primary wind and powder.Whether evenly distributed each burner primary wind and powder is the important of decision Combustion Operation of Boilers quality
One of factor, this does not prevent the needs of contamination in stove, slagging, imperfect combustion and high temperature corrosion, and low NOx combustion skill still
The precondition that art is smoothly implemented.It is to install pulverized coal distributor, coal powder distribation additional to solve the uneven Main Means of primary wind and powder distribution
Device is the device that breeze airflow is evenly distributed to as Heavenly Stems and Earthly Branches pipe.Power industry standard《Thermal power plant pulverized coal preparation system design meter
Calculate technical stipulation》(DL/T5145-2012) clear stipulaties in the 7.10.1 articles：To ensure that pulverized coal feed pipe wind powder distribution arranged side by side is equal
It is even, must the certain type of pulverized coal distributor of device in heavy duty boiler unit pulverized-coal system.
Domestic pulverized coal distributor technology is started in last century the seventies, mainly experienced two generation technique progress and hair
Exhibition.The first generation is grid type pulverized coal distributor, and the technology comes from Germany and the former Soviet Union, the eighties are drawn through Domestic Scientific Research unit
Enter, be successfully applied in below 300MW boiler controller system.This kind of pulverized coal distributor inherent variability is ± (10~15) %, plus resistance
Deviation, reachable ± (25~35) % of total distribution deviation are added caused by force characteristic, therefore can not meet that large sized unit passes through safely
Help the needs run.The second generation is double DUALLY ADJUSTABLE PULVERIZED COALs, and double DUALLY ADJUSTABLE PULVERIZED COALs are limited by Xi'an hot working research institute
Company's independent research, containing three patented technologies, (patent No. is respectively：ZL200320103036.X；
ZL200320103037.4；ZL97218197.07), direct-fired mill easily can be exported each one by the technology
The air quantity and coal powder distribation deviation of secondary airduct are controlled within ± (8~10) %, are now widely used for 300MW~1000MW machines
Group.Double DUALLY ADJUSTABLE PULVERIZED COALs essentially eliminate the relevant various problems of considerable coal-fired boiler primary wind and powder partition characteristic, but
Its is complicated, and space-consuming is big, inconvenience is brought to manufacture installation and operation maintenance, especially to original limited space
Coal pulverizer installs the technological transformation project of pulverized coal distributor additional, is difficult to carry out using this kind of pulverized coal distributor.
Utility model content
A kind of the shortcomings that the purpose of this utility model is to overcome above-mentioned prior art, there is provided compact coal powder distribation
Device, the dispensing arrangement is compact, occupies little space, and the air quantity of primary air piping and coal powder distribation deviation are smaller.
To reach above-mentioned purpose, compact pulverized coal distributor described in the utility model includes base and is fixed on base
Annular coal powder distributor case, base is fixed on the exit of external separator for coal mill, the entrance of base and external coal pulverizer point
Outlet from device is connected, and annular coal powder distributor case is divided into some warehouses, and the bottom inlet of each warehouse goes out with base top
Mouth is connected, and the top exit of each warehouse, which is sequentially connected, is connected with resistance adjusting tank and flour extraction pipe.
The porch of warehouse bottom is provided with the powder quantity regulating device for being used for adjusting warehouse bottom inlet aperture, the outer wall of warehouse
It is provided with the powder amount for being used to control the powder quantity regulating device and adjusts valve.
Two adjustment plates are provided with resistance adjusting tank, are provided with the outer wall of resistance adjusting tank for adjusting adjustment plate and water
Square to angle resistance adjust valve.
The outlet of resistance adjusting tank is connected by having an area of reducer pipe with flour extraction pipe.
The number of warehouse is 2-8, and the size of each warehouse is identical.
Annular coal powder distributor case is fixed on base by flange.
Base is pyramidal structure or straight tube structure.
The utility model has the advantages that：
Compact pulverized coal distributor described in the utility model includes base and annular coal powder distributor case, wherein, base is solid
Due to the exit of external separator for coal mill, while annular coal powder distributor case is divided into some warehouses, and the outlet of each warehouse is successively
Resistance adjusting tank and flour extraction pipe are communicated with, structure is more compact, occupies little space, and need not change powder manufacturing apparatus in installation process
Original arrangement, be easily installed, while the coal dust amount and air quantity of each flour extraction pipe are all separately adjustable, influence each other smaller, so as to have
The air quantity and coal powder distribation deviation of the reduction primary air piping of effect are smaller, can reach higher distributing uniformity requirement.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the sectional view in A-A directions in Fig. 1.
Wherein, 1 be base, 2 be annular coal powder distributor case, 3 be resistance adjusting tank, 4 be circumference reducer pipe, 5 be flour extraction pipe,
6 be powder amount adjustment valve, 7 be resistance adjustment valve.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1 and Fig. 2, compact pulverized coal distributor described in the utility model includes base 1 and is fixed on base 1
Annular coal powder distributor case 2, base 1 is fixed on the exit of external separator for coal mill, the entrance of base 1 and external coal pulverizer
The outlet of separator is connected, and annular coal powder distributor case 2 divides for some warehouses, the bottom inlet of each warehouse with the top of base 1
Outlet be connected, the top exit of each warehouse, which is sequentially connected, is connected with resistance adjusting tank 3 and flour extraction pipe 5.
The porch of warehouse bottom is provided with the powder quantity regulating device for being used for adjusting warehouse bottom inlet aperture, the outer wall of warehouse
It is provided with the powder amount for being used to control the powder quantity regulating device and adjusts valve 6；Two adjustment plates, resistance are provided with resistance adjusting tank 3
The resistance adjustment valve 7 of the angle for adjusting adjustment plate and horizontal direction is provided with the outer wall of adjusting tank 3；Resistance adjusting tank 3
Outlet be connected by having an area of reducer pipe 4 with flour extraction pipe 5；The number of warehouse is 2-8, and the size of each warehouse is identical；Ring
Shape coal powder distributor case 2 is fixed on base 1 by flange；Base 1 is pyramidal structure or straight tube structure.
Operation principle of the present utility model is as follows：
The flaring that the entrance through the bottom of base 1 enters inside base 1 through the primary wind and powder that separator for coal mill is separated
In space, because primary wind and powder has certain rotation, therefore helically formula rises simultaneously for flowing of the primary wind and powder inside base 1
Decline with flow velocity, and the duration is longer, so that primary wind and powder can be mixed uniformly in base 1, it is well mixed
Primary wind and powder enters each warehouse, and user can adjust powder amount adjustment valve 6 as needed, and adjusting valve 6 by powder amount moves powder amount tune
Regulating device, so as to adjust the size of warehouse bottom inlet, the mean allocation of coal dust is realized, the primary wind and powder from warehouse out enters
Enter in resistance adjusting tank 3, by controlling resistance to adjust the angle that valve 7 adjusts adjustment plate and horizontal direction, realize that primary wind and powder exists
The resistance being subject in resistance adjusting tank 3 is adjusted, resistance adjusting tank 3 export primary wind and powder again successively through have an area of reducer pipe 4 and
Flour extraction pipe 5 is discharged.
Because each downstream length of flour extraction pipe 5 is different, therefore its on-way resistance is different, and the utility model passes through resistance adjusting tank
The less flour extraction pipe 5 of 3 pairs of on-way resistances increases certain resistance, makes the drag overall of each flour extraction pipe 5 equal.Air quantity in flour extraction pipe 5
Size and the drag overall of flour extraction pipe 5 be inversely proportional, so as to realize to enter each flour extraction pipe 5 primary air flow leveling.
In addition, the utility model realizes the independent adjustment of coal dust amount and air quantity, and each flour extraction pipe by two-stage adjusting apparatus
It is independent of each other between 5, its whole height is easy for installation between 1.5 meters to 2 meters, and internal structure is simple, is easy at abrasionproof
Reason.
Claims (7)
1. a kind of compact pulverized coal distributor, it is characterised in that including base (1) and the annular coal dust being fixed on base (1)
Distributor box (2), base (1) are fixed on the exit of external separator for coal mill, and the entrance of base (1) separates with external coal pulverizer
The outlet of device is connected, and annular coal powder distributor case (2) is divided into some warehouses, the bottom inlet of each warehouse with the top of base (1)
Outlet be connected, the top exit of each warehouse, which is sequentially connected, is connected with resistance adjusting tank (3) and flour extraction pipe (5).
2. compact pulverized coal distributor according to claim 1, it is characterised in that the porch of warehouse bottom, which is provided with, to be used for
The powder quantity regulating device of warehouse bottom inlet aperture is adjusted, the outer wall of warehouse, which is provided with, to be used to control the powder quantity regulating device
Powder amount adjustment valve (6).
3. compact pulverized coal distributor according to claim 1, it is characterised in that two are provided with resistance adjusting tank (3)
Adjustment plate, the resistance adjustment valve of the angle for adjusting adjustment plate and horizontal direction is provided with the outer wall of resistance adjusting tank (3)
(7)。
4. compact pulverized coal distributor according to claim 1, it is characterised in that the outlet of resistance adjusting tank (3) passes through
Circumference reducer pipe (4) is connected with flour extraction pipe (5).
5. compact pulverized coal distributor according to claim 1, it is characterised in that the number of warehouse is 2-8, and each storehouse
The size of body is identical.
6. compact pulverized coal distributor according to claim 1, it is characterised in that annular coal powder distributor case (2) passes through method
Orchid is fixed on base (1).
7. compact pulverized coal distributor according to claim 1, it is characterised in that base (1) is pyramidal structure or straight tube
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669480.XU CN206831550U (en) | 2017-06-09 | 2017-06-09 | A kind of compact pulverized coal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669480.XU CN206831550U (en) | 2017-06-09 | 2017-06-09 | A kind of compact pulverized coal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206831550U true CN206831550U (en) | 2018-01-02 |
Family
ID=60775274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720669480.XU Active CN206831550U (en) | 2017-06-09 | 2017-06-09 | A kind of compact pulverized coal distributor |
Country Status (1)
| Country | Link |
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| CN (1) | CN206831550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191960A (en) * | 2017-06-09 | 2017-09-22 | 西安热工研究院有限公司 | A kind of compact pulverized coal distributor |
| CN114659135A (en) * | 2022-03-29 | 2022-06-24 | 西安热工研究院有限公司 | Integral type buggy volume distribution adjusting device |
-
2017
- 2017-06-09 CN CN201720669480.XU patent/CN206831550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191960A (en) * | 2017-06-09 | 2017-09-22 | 西安热工研究院有限公司 | A kind of compact pulverized coal distributor |
| CN114659135A (en) * | 2022-03-29 | 2022-06-24 | 西安热工研究院有限公司 | Integral type buggy volume distribution adjusting device |
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