CN202253617U - Thermal-insulation rotary slag feed valve for slag cooler of fluidized bed boiler - Google Patents
Thermal-insulation rotary slag feed valve for slag cooler of fluidized bed boiler Download PDFInfo
- Publication number
- CN202253617U CN202253617U CN2011203269350U CN201120326935U CN202253617U CN 202253617 U CN202253617 U CN 202253617U CN 2011203269350 U CN2011203269350 U CN 2011203269350U CN 201120326935 U CN201120326935 U CN 201120326935U CN 202253617 U CN202253617 U CN 202253617U
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- slag
- valve
- main body
- feed pipe
- compensator
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Abstract
The utility model discloses a thermal-insulation rotary slag feed valve for a slag cooler of a fluidized bed boiler. The thermal-insulation rotary slag feed valve comprises a slag feed pipe, a manual grate type combined valve and a compensator, wherein the manual grate type combined valve is arranged on the slag feed pipe, the compensator is arranged below the slag feed pipe and fixed with the slag feed pipe, a slag outlet at the lower part of the compensator is communicated with a slag inlet at the front end of a main body, the rear end of the main body is provided with a slag discharge pipe, the slag inlet of the main body is provided with a negative pressure pipe, and the main body is connected with a motor and driven by the same. Bottom slag discharged by the boiler is fed into the main body of the slag feed valve after passing through the slag feed pipe, the grate type combined valve and the compensator; the main body is driven to rotate by the motor; and along with the rotation of the main body, the bottom slag gradually moves to the slag discharge pipe at the rear end of the main body and then is discharged to the slag cooler. The slag feed valve has the characteristics of good linearity in adjustment of bottom slag delivery, no blocking caused by deposition of the bottom slag at the slag feed valve, high strength and long service life.
Description
Technical field
The utility model relates to slag cooling emission control technique field, the end, is specifically related to a kind of fluidized bed boiler slag-cooling device with adiabatic rotation slag input valve.
Background technology
At present, the CFBB slag cooler that range of application is wider has three kinds of L valve, pneumatic or electronic push-pull valve and comb formula combination valves with the slag input control valve.
The operation principle of L valve: utilize bed to press the automatic continuous discharging slag of signal; When pressing, bed is raised to certain value; When the bed material is too much, open L valve flow wind transmission adjustment door automatically, adjust to suitable wind flow; Make the lime-ash of horizontal segment in the L valve be the suspension fluidization, utilize the material level differential pressure of L valve vertical section and horizontal segment to send lime-ash to slag cooler.When the bed pressure drop is got off, just close L valve flow wind transmission adjustment door, lime-ash just drops in the valve no longer mobile.Practical operation situation shows: the L valve is prone to stop up or gravity flow, can't effectively control deslagging.Its reason is following: 1. feeding granularity is defective, has the gangue of a lot of bulks and stone to get lodged in the L valve; 2. L valve flow wind transmission adjustment door sealing is not tight, the air of the L valve that bleeds with react near 800 ℃ of high-temperature ash that contain a spot of combustible, form the low temperature slag of bulk, get lodged in the L valve.
Pneumatic or the electronic control of the normal employing of push-pull valve, its principle is simple, mainly leans on the aperture control slag input amount of plate, and when the plate aperture was big, the slag input amount was big; When valve opening hour, the slag input amount is little.Practical operation situation shows: abominable because of slag input valve running environment, the long-term erosive wear plate of slag at the bottom of 900 ℃ of high temperature is prone to cause plate distortion bite, thereby can't its aperture of normal regulating.In addition, near flow area cross section push-pull valve of its operation principle decision slag feed pipe diminishes, and occurs easily that bulk gets into slag feed pipe and can't be through the situation of push-pull valve, and the normal deslagging of boiler is brought influence.
The operation principle basically identical of comb formula combination valve and push-pull valve, but the part of its control slag input is improved to inserted link by plate, and this valve base has originally solved the problem of push-pull valve bite distortion.But, occur easily also that bulk gets into slag feed pipe and can't be through the situation of slag input valve because of there is the slag feed pipe variable section structure equally in it.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists; The purpose of the utility model is to provide a kind of fluidized bed boiler slag-cooling device with adiabatic rotation slag input valve; This slag input valve has end slag feed adjustment good linearity and end slag and can in the slag input valve, not pile up and result in blockage; Also has the intensity height, the characteristics that the life-span is long.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of fluidized bed boiler slag-cooling device is with adiabatic rotation slag input valve; Comprise slag feed pipe 1; Be arranged on the manual comb formula combination valve 2 on the slag feed pipe 1, be arranged on slag feed pipe 1 below and with its compensator 3 of fixing, the slag inlet of the slag notch of compensator 3 belows and body 4 front ends is connected; Body 4 rear ends are provided with scum pipe 6, and said body 4 is connected with motor to drive its rotation.
Said body 4 comprises shell 10, shell 10 set inside guide plates 9, and guide plate 9 set inside metal blades 8, abrasion-proof and refractory pouring material 7 is laid in guide plate 9 outsides.
Slag inlet place at said body 4 is provided with negative pressure pipe 5.
Compared with prior art, the utlity model has following advantage:
(1) owing to adopt 4 rotations of driven by motor body, operation is only regulated slag input valve rotating speed, depresses at certain burner hearth bed, and there are one-to-one relationship in end slag mass rate of emission and slag input valve rotating speed, and linear adjustment is good, is convenient to end slag emission control.
(2) body 4 set inside guide plates 9 can guarantee the smooth delivery of power of end slag, avoid end slag in valve body, to pile up; Guide plate 9 set inside metal blades 8 improve the intensity of guide plate, and body 4 adopts abrasion-proof and refractory pouring material 7 adiabatic liners can improve the anti-wear performance of guide plate, increases the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model slag input valve.
Fig. 2 is the cutaway view of the utility model body 4.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done more detailed explanation.
As shown in Figure 1, a kind of fluidized bed boiler slag-cooling device of the utility model comprises slag feed pipe 1 with adiabatic rotation slag input valve; Be arranged on the manual comb formula combination valve 2 on the slag feed pipe 1, during the assurance overhaul of the equipments, the isolation of slag cooler and boiler side; Be arranged on slag feed pipe 1 below and with its fixing compensator 3 absorption boiler expansions; The slag inlet of the slag notch of compensator 3 belows and body 4 front ends is connected, and the slag inlet place of body 4 is provided with negative pressure pipe 5, makes the flue gas that gets into the slag input valve with end slag via 5 discharges of negative pressure pipe; Body 4 rear ends are provided with scum pipe 6, and body 4 is connected with motor to drive its rotation.
As shown in Figure 2, body 4 comprises shell 10, shell 10 set inside guide plates 9; Can guarantee the smooth delivery of power of end slag, avoid end slag in valve body, to pile up, guide plate 9 set inside metal blades 8; The effect of main its skeleton of metal blade; Improve the intensity of guide plate, the anti-wear performance that abrasion-proof and refractory pouring material 7 can improve guide plate is laid in guide plate 9 outsides, increases the service life.
A kind of fluidized bed boiler slag-cooling device of the utility model uses adiabatic rotation slag input valve operation principle to be: the boiler discharge temperature is about 900 ℃ end slag via getting into slag input valve body 4 after slag feed pipe 1, comb formula combination valve 2 and the compensator 3; Drive through motor makes body 4 rotations; Along with the rotation of body 4, slag cooler is carried and be discharged into to the guide plate 9 in the body 4 progressively to the scum pipe 6 of body 4 rear ends with end slag.
Claims (3)
1. a fluidized bed boiler slag-cooling device is with adiabatic rotation slag input valve; Comprise slag feed pipe (1); Be arranged on the manual comb formula combination valve (2) on the slag feed pipe (1), also be provided with and be fixed on slag feed pipe (1) below compensator (3), the slag notch of compensator (3) below and the slag inlet of body (4) front end are connected; Body (4) rear end is provided with scum pipe (6), it is characterized in that: said body (4) is connected with motor to drive its rotation.
2. slag cooler according to claim 1 is with adiabatic rotation slag input valve; It is characterized in that: said body (4) comprises shell (10); Shell (10) set inside guide plate (9), guide plate (9) set inside metal blade (8), abrasion-proof and refractory pouring material (7) is laid in guide plate (9) outside.
3. slag cooler according to claim 1 and 2 is characterized in that: at the slag inlet place of said body (4) negative pressure pipe (5) is set with adiabatic rotation slag input valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203269350U CN202253617U (en) | 2011-09-01 | 2011-09-01 | Thermal-insulation rotary slag feed valve for slag cooler of fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203269350U CN202253617U (en) | 2011-09-01 | 2011-09-01 | Thermal-insulation rotary slag feed valve for slag cooler of fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202253617U true CN202253617U (en) | 2012-05-30 |
Family
ID=46114853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203269350U Expired - Lifetime CN202253617U (en) | 2011-09-01 | 2011-09-01 | Thermal-insulation rotary slag feed valve for slag cooler of fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202253617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329664A (en) * | 2014-10-17 | 2015-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooling flash evaporation bottom slag cooler |
-
2011
- 2011-09-01 CN CN2011203269350U patent/CN202253617U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329664A (en) * | 2014-10-17 | 2015-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooling flash evaporation bottom slag cooler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |