CN206037100U - Positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler - Google Patents
Positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler Download PDFInfo
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- CN206037100U CN206037100U CN201621013699.6U CN201621013699U CN206037100U CN 206037100 U CN206037100 U CN 206037100U CN 201621013699 U CN201621013699 U CN 201621013699U CN 206037100 U CN206037100 U CN 206037100U
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- valve
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- powder
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Abstract
The utility model discloses a positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler, agitator, quantitative feeding valve, fluidization storehouse, second grade blocking valve, one -level blocking valve and fluidization pipe at the bottom of the buggy storehouse body, tower, the agitator sets up in the bottom of the buggy storehouse body and feeds through the buggy storehouse body at the bottom of this tower, and this ration feeding valve sets up the below of agitator at the bottom of the tower, and this fluidization storehouse sets up in quantitative feeding valve's below and feeds through quantitative feeding valve's delivery outlet, and the top in fluidization storehouse is provided with the discharge orifice, locks gas through one -level blocking valve and the second grade blocking valve wind pressure in to a tuber pipe, and two stand lock pneumatic valves are put stacking, in two blocking valve intermediate formation pneumatics storehouses, reduce playing a reversed role of a wind. On a small quantity the air through the doublestage blocking valve and blocking valve valve body rotate the air current that produces and can make the buggy fluidization in the fluidization storehouse, put forward the turn to powder degree of consistency of unloading of coal supply to realize the stable transported of buggy, precise measurement reduces and send the whitewashed amount of wind, reduces to supply powder system energy consumption.
Description
Technical field
This utility model is related to coal burning system art, refers in particular to a kind of positive-pressure type suitable for industrial coal powder boiler
Concentrated phase powder-supply system.
Background technology
The requirement reduced discharging to industrial energy saving with China is improved, and the industry as one of the primary pollution source of haze common is fired
Coal burning boiler has welcome the opportunity of reform, and with the Technique Popularizing of high-efficiency pulverized coal boiler, increasing customer selecting is more environmentally-friendly
The high-efficiency pulverized coal boiler of energy-conservation.The stability of one of the core technology for high-efficiency pulverized coal boiler powder-supply system, accuracy is always
It is the technical barrier in industry.
High-efficiency pulverized coal boiler is divided into dilute phase powder feeding and concentrated phase powder feeding for powder technology, and dilute phase powder feeding is generally Venturi tube dilute phase
Powder feeding technology, solid-gas ratio are less than 1：3, Venturi tube dilute phase powder feeding technology has First air power greatly, high energy consumption, pipe wear
The big problem of amount.Because Venturi tube operation logic is limited, Venturi tube internal spout speed need to reach the speed of more than 60m/s,
Negative pressure transportation could be realized, high velocity air makes coal dust be accelerated in Venturi tube, the abrasion of the coal dust of high speed to powder feeding pipes
Amount is greatly increased.And the accurate measurement of its Venturi tube dilute phase powder feed system coal dust difficult to realize.Concentrated phase powder feeding technology is generally
Playpipe powder feeding technology, solid-gas ratio are more than 3：1.Playpipe concentrated phase powder feeding technology is conveyed for malleation, is provided with centre in its system
Storehouse, intermediate bin have storage and the function weighed, but I haven't seen you for ages directly affects powder sending quantity because of coal dust amount of storage many of intermediate bin, when
When intermediate bin powder amount is less than certain value, because the gas positive pressure in powder feeding pipes returns top, powder sending quantity can be caused to reduce suddenly, affect pot
The stable and economical combustion of stove.
In view of this, the present inventor has carried out depth for the problem of the powder-supply system technology presence of existing high-efficiency pulverized coal boiler
Enter research, thus this case produces.
Utility model content
In view of this, disappearance of this utility model for prior art presence, its main purpose are to provide one kind and are applied to
The positive-pressure type concentrated phase powder-supply system of industrial coal powder boiler, the stable conveying of its achievable coal dust, accurate measurement reduce pulverizer air
Amount, reduces powder-supply system energy consumption.
For achieving the above object, this utility model is using such as purgation technical scheme：
A kind of positive-pressure type concentrated phase powder-supply system suitable for industrial coal powder boiler, include coal dust warehouse, bottom of towe agitator,
Dosing valve, fluidisation storehouse, secondary latch air valve, one-level blocking valve and fluidisation pipe；The bottom of towe agitator is arranged at coal dust warehouse
Bottom and connect coal dust warehouse, the dosing valve is arranged at the lower section of bottom of towe agitator and connects the output of bottom of towe agitator
Mouthful, the fluidisation storehouse is arranged at the lower section of dosing valve and connects the delivery outlet of dosing valve, and fluidisation is provided with the top of storehouse
Discharge orifice, the secondary latch air valve are arranged at the bottom in fluidisation storehouse and connect fluidisation storehouse, and the one-level blocking valve is arranged at secondary latch gas
The lower section of valve simultaneously connects the delivery outlet of secondary latch air valve, and the fluidisation pipe is arranged at the lower section of one-level blocking valve and connects one-level lock gas
The delivery outlet of valve.
Used as a kind of preferred version, the discharge orifice is connected with air exhauster, and the air exhauster connects boiler.
Used as a kind of preferred version, the fluidisation pipe has discharging opening and First air input port, and the discharging opening connects boiler
Burner, has the two ends of powder feeding spout and fluidisation spout, the two ends of the powder feeding spout and fluidisation spout respectively in fluidisation pipe
Connection discharging opening and First air input port.
This utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology
Scheme understands：
Lock gas is carried out by one-level blocking valve and secondary latch air valve to the blast in primary air piping, two stand lock air valves are to stacking
Put, in two blocking valve intermediate formation air compression warehouses, reduce playing a reversed role for First air.A small amount of air and lock gas by twin-stage blocking valve
Valve body rotates the air-flow for producing and can make the powder fluidized in fluidisation storehouse, there is provided the uniformity of coal dust blanking, so as to realize coal
The stable conveying of powder, accurate measurement reduce powder feeding air quantity, reduce powder-supply system energy consumption.
For more clearly illustrating architectural feature of the present utility model and effect, come right with specific embodiment below in conjunction with the accompanying drawings
This utility model is described in detail：
Description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of this utility model；
Fig. 2 be this utility model preferred embodiment in fluidize pipe enlarged diagram.
Accompanying drawing identifier declaration：
10th, coal dust warehouse 20, bottom of towe agitator
30th, dosing valve 40, fluidisation storehouse
41st, discharge orifice 50, secondary latch air valve
60th, one-level blocking valve 70, fluidisation pipe
71st, discharging opening 72, First air input port
73rd, powder feeding spout 74, fluidisation spout
80th, air exhauster
Specific embodiment
Refer to shown in Fig. 1 and Fig. 2, that show the concrete structure of the preferred embodiment of this utility model, include
Coal dust warehouse 10, bottom of towe agitator 20, dosing valve 30, fluidisation storehouse 40, secondary latch air valve 50, one-level blocking valve 60 and stream
Change pipe 70.
The bottom of towe agitator 20 is arranged at the bottom of coal dust warehouse 10 and connects coal dust warehouse 10, and the dosing valve 30 sets
It is placed in the lower section of bottom of towe agitator 20 and connects the delivery outlet of bottom of towe agitator 20, the fluidisation storehouse 40 is arranged at dosing valve 30
Lower section and connect the delivery outlet of dosing valve 30, the top for fluidizing storehouse 40 is provided with discharge orifice 41, the secondary latch air valve 50
It is arranged at the bottom in fluidisation storehouse 40 and connects fluidisation storehouse 40, the one-level blocking valve 60 is arranged at the lower section of secondary latch air valve 50 and connects
The delivery outlet of logical secondary latch air valve 50, the fluidisation pipe 70 are arranged at the lower section of one-level blocking valve 60 and connect one-level blocking valve 60
Delivery outlet.
In the present embodiment, the discharge orifice 41 is connected with air exhauster 80, and the air exhauster 80 connects boiler.
And, the fluidisation pipe 70 has discharging opening 71 and First air input port 72, and the discharging opening 71 connects boiler combustion
Device (not shown), has powder feeding spout 73 and fluidisation spout 74, the two ends of the powder feeding spout 73 and fluidisation spray in fluidisation pipe 70
The two ends of mouth 74 respectively connect discharging opening 71 and First air input port 72.
In addition, one-level blocking valve 60 is the wear-resisting pass air exhauster of high accuracy, its necessary electromotor is power frequency motor, plays one-level lock
Gas is acted on, and the positive pressure air slowed down in fluidisation pipe 70 is blown upwards.The secondary latch air valve 50 and the superposition arrangement of one-level blocking valve 60,
Pneumatics cabin is formed in two valves, further prevents the positive pressure air in powder feeding pipes from up emitting.Jing after two-stage blocking valve, work as fluidisation
When conveying blast in pipe 70 is 50kpa, the blast after two-stage blocking valve is less than 200pa, plays a part of to lock gas.It is described
Fluidisation storehouse 40 play buffering and gas solid separation, built-in deduster, and discharged by discharge orifice 41.The air exhauster 80
It is arranged at outside the discharge orifice 41 in fluidisation storehouse 40, for extracting fluidisation 40 expellant gas of storehouse, is sent in boiler.The dosing
Valve 30 is located at fluidisation 40 top of storehouse, gives fluidisation 40 feeding of storehouse.The bottom of towe agitator 20 plays a part of to coal dust broken arch and loosens,
Make dosing valve 30 interior constant per turn given coal dust amount, reach the effect of accurate feeding and metering.
During work, the coal dust in coal dust warehouse 10 passes through the bidirectional screw of bottom of towe agitator 20 to intermediate blanking mouth feeding,
Bottom of towe agitator 20 and dosing valve 30 link, and the pressure perseverance suffered by dosing valve 30 reaches, make dosing valve 30 per turn
Powder sending quantity it is constant, by the rotating speed of dosing valve 3 and it is accumulative rotate the number of turns accurately can calculate instantaneous powder-feeding amount and
Accumulative powder-feeding amount.Coal dust is provided with gas powder separator by entering fluidisation storehouse 40 after dosing valve 30 in fluidisation storehouse 40 (in figure not
Show), secondary latch air valve 50 is fallen within coal dust, and is entered in fluidisation pipe 70 by one-level blocking valve 60.First air is from fluidisation pipe 70
First air input port 72 enters, and is divided into two-way, is led directly in the powder feeding spout 73 of fluidisation pipe 70, for pulverized coal conveying all the way；Separately
The fluidisation spout 74 of fluidisation pipe 70 is led up to, the air-flow for fluidizing spout 74 forms eddy flow in the abdomen storehouse of fluidisation pipe 70, makes coal
Powder is fluidized, and improves the uniformity and stability of powder feeding.
Malleation powder feeding mainly need solve a wind-fall seal in feeding system, because powder feeding counteracted by pressure part coal dust from
Fall, cause powder sending quantity not enough and unstable.This utility model passes through one-level blocking valve 60 and secondary latch air valve 50 to primary air piping
Interior blast carries out lock gas, and one-level blocking valve 60 and secondary latch air valve 50 close air exhauster, two stand lock air valves from high accuracy
Put to stacking, in two blocking valve intermediate formation air compression warehouses, reduce playing a reversed role for First air.A small amount of air by twin-stage blocking valve
Rotating the air-flow for producing with blocking valve valve body can make the powder fluidized in fluidisation storehouse 40, there is provided the uniformity of coal dust blanking, and
Fluidizing gas separates coal dust and air by fluidizing the gas powder separator in storehouse 40, and air is discharged by discharge orifice 41,
Air exhauster 80 is provided with outside discharge orifice 41, the valve opening of air exhauster is controlled, and intermediate bin can be made to keep tiny structure shape
State, negative pressure value are about -50pa, so as to be further ensured that dosing valve 30 is not affected by gas pressure of playing a reversed role, fixed so as to realize
Accurate, the even feeding of amount feed valve.
The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made
Any restriction, therefore every any trickle amendment made to above example according to technical spirit of the present utility model, equivalent become
Change and modification, still fall within the range of technical solutions of the utility model.
Claims (3)
1. a kind of positive-pressure type concentrated phase powder-supply system suitable for industrial coal powder boiler, it is characterised in that：Include coal dust warehouse, tower
Bottom agitator, dosing valve, fluidisation storehouse, secondary latch air valve, one-level blocking valve and fluidisation pipe；The bottom of towe agitator is arranged at
The bottom of coal dust warehouse simultaneously connects coal dust warehouse, and the dosing valve is arranged at the lower section of bottom of towe agitator and connects bottom of towe stirring
The delivery outlet of device, the fluidisation storehouse are arranged at the lower section of dosing valve and connect the delivery outlet of dosing valve, fluidize the top in storehouse
Portion is provided with discharge orifice, and the secondary latch air valve is arranged at the bottom in fluidisation storehouse and connects fluidisation storehouse, and the one-level blocking valve is arranged at
The lower section of secondary latch air valve simultaneously connects the delivery outlet of secondary latch air valve, and the fluidisation pipe is arranged at the lower section of one-level blocking valve and connects
The delivery outlet of one-level blocking valve.
2. a kind of positive-pressure type concentrated phase powder-supply system suitable for industrial coal powder boiler according to claim 1, its feature exist
In：The discharge orifice is connected with air exhauster, and the air exhauster connects boiler.
3. a kind of positive-pressure type concentrated phase powder-supply system suitable for industrial coal powder boiler according to claim 1, its feature exist
In：With discharging opening and First air input port, the discharging opening connects boiler-burner to the fluidisation pipe, has powder feeding in fluidisation pipe
Spout and fluidisation spout, two ends and the two ends of fluidisation spout of the powder feeding spout respectively connect discharging opening and First air input
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013699.6U CN206037100U (en) | 2016-08-31 | 2016-08-31 | Positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013699.6U CN206037100U (en) | 2016-08-31 | 2016-08-31 | Positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206037100U true CN206037100U (en) | 2017-03-22 |
Family
ID=58301282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013699.6U Active CN206037100U (en) | 2016-08-31 | 2016-08-31 | Positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206037100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442465A (en) * | 2018-09-30 | 2019-03-08 | 上海全应科技有限公司 | The fitting sample of the instantaneous powder-feeding amount of pulverized-coal fired boiler chooses and metering method |
| CN109625784A (en) * | 2018-11-30 | 2019-04-16 | 东南大学 | A kind of biomass charging system |
-
2016
- 2016-08-31 CN CN201621013699.6U patent/CN206037100U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442465A (en) * | 2018-09-30 | 2019-03-08 | 上海全应科技有限公司 | The fitting sample of the instantaneous powder-feeding amount of pulverized-coal fired boiler chooses and metering method |
| CN109442465B (en) * | 2018-09-30 | 2020-06-26 | 上海全应科技有限公司 | Fitting sample selection and metering method for instantaneous powder feeding amount of pulverized coal boiler |
| CN109625784A (en) * | 2018-11-30 | 2019-04-16 | 东南大学 | A kind of biomass charging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Positive pressure concentrated phase supplies powder system suitable for industrial pulverized coal boiler Effective date of registration: 20181121 Granted publication date: 20170322 Pledgee: Industrial Bank Limited by Share Ltd Quanzhou branch Pledgor: Fujian Eternal Energy Management Co., Ltd. Registration number: 2018350000138 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220528 Granted publication date: 20170322 Pledgee: Industrial Bank Limited by Share Ltd. Quanzhou branch Pledgor: FUJIAN ETERNAL ENERGY MANAGEMENT Co.,Ltd. Registration number: 2018350000138 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |