CN206637615U - CFBB N-type returning charge valve - Google Patents
CFBB N-type returning charge valve Download PDFInfo
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- CN206637615U CN206637615U CN201621223351.XU CN201621223351U CN206637615U CN 206637615 U CN206637615 U CN 206637615U CN 201621223351 U CN201621223351 U CN 201621223351U CN 206637615 U CN206637615 U CN 206637615U
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Abstract
It the utility model is related to a kind of CFBB N-type returning charge valve, it is by feed zone, middle part ascent stage and top discharge section under vertical feeding pipeline communication, loosening airduct in the middle part of lower feed zone and set by bottom, rise at middle part and sealing-plug and sealed valve cap composition are provided with the geometry flex point of pars infrasegmentalis.Compared with prior art, sealing-plug and sealed valve cap are devised, solves the problem being not easily cleaned after middle part ascent stage powder material accumulation and accumulation, while serves buffering and wear-resistant protection effect；Sealed valve cap convenient disassembly, easy access and maintenance；Side, which is provided with returning charge airduct, in the middle part of top discharge section contributes to material smooth flow into burner hearth.Through experiment, the returning charge valve arrangement is simple, and operation is flexible, and flow resistance is low in valve, and valve body material requires low, and flow pressure drop reduces in valve, stable and reliable operation, significantly reduces manufacturing cost and operating cost；Facilitate installation and repairing, significantly extend service life and reduce clearance time and intensity.
Description
Technical field：
A kind of CFBB returning charge is the utility model is related to, especially activated coke dry gas purification technique is special
The CFBB N-type returning charge valve of burning boiler
Background technology：
Flue Gas Purification Technology Using Activated Coke is a kind of renewable, resourcebility dry FGD process technology, suitable for purification
Coal-fired flue-gas, gas from oil burning, flue gas of refuse burning, heavy oil decompose flue gas and sintering flue gas etc..The dominant catalyst of the technology is lived
Property charcoal run in device the byproducts such as active powdered carbon can be produced because of reasons such as mechanical wears, the byproduct can be reclaimed as following
The fuel of circulation fluidized bed boiler.Returning charge valve is the important component of CFBB, and heat smoke carries incomplete combustion
After high temperature cyclone separator separates, high-temperature solid particle is collected high-temperature solid particle, and pot is returned to again through returning charge valve
Furnace interior burns again.
Existing returning charge valve is divided into two classes：One kind is the mechanical returning charge valve being arranged under cyclone separator on dipleg standpipe,
Another kind of is the U-shaped returning charge valve being connected between standpipe and refeed line.Mechanical returning charge valve auxiliary facility is complicated, more in HTHP
Fault rate is high under the operating conditions such as dirt, and U-shaped returning charge valve cross-section resistance under systemic circulation flow rate is larger, in big returning charge air quantity lower standing tube
Gas anti-channeling is more, and it is difficult that the trouble huntings such as coking occur.Therefore returning charge valve arrangement also needs to improve.
Fluidized-bed reactor disclosed in CN202387444U, the returning charge valve used is resistant to elevated temperatures guiding valve, gate valve or ball valve.
The valve requires high to material, and cost is high.And mechanical valve auxiliary facility is complicated, fault rate is high.
A kind of material lifting device of circulation fluidized boiler disclosed in CN205299506U, using the inclined tube direct material returning valve ascent stage
The design method mutually passed through, at powder material wide-angle deflecting, mechanical wear problem of the material to equipment is easily produced, maintenance is not
Just.
A kind of material-returning device of CFBB, is set on bottom of device air distribution plate disclosed in CN105066120A
The blast cap of size and density not etc., it is complicated, at powder material wide-angle deflecting, easily produce mechanical wear problem, inspection
Repair inconvenience.
A kind of material lifting device of circulation fluidized boiler disclosed in CN202792004U, wind is respectively provided with horizontal segment and tilting section
Case and blast cap, corresponding air channel arrangement is complicated, and at powder material wide-angle deflecting, easily produces mechanical wear problem, maintenance
Inconvenience.
A kind of refuse incinerator of circulating fluid bed returning charge air-supply arrangement disclosed in CN204593402U, it is additionally arranged waste material row
Export and connect section controllable register, it is complicated, the risk of material leakage is added, is additionally arranged auxiliary material return blower, is increased
Equipment investment.
The content of the invention：
The purpose of this utility model is that for above-mentioned the deficiencies in the prior art, there is provided one kind can solve the problem that existing returning charge
Complicated existing for valve gear, running resistance is big, and equipment attrition is serious, overhauls the CFBB N of the problems such as inconvenient
Type returning charge valve.
The purpose of this utility model is achieved through the following technical solutions：
CFBB N-type returning charge valve, it is that lower feed zone 22, middle part ascent stage 23 are connected by vertical feeding pipeline 21
With top discharge section 24, at the lower middle part of feed zone 22 with the loosening airduct 25 set by bottom, the geometry in the bottom of middle part ascent stage 23
Sealing-plug a28 and sealed valve cap a27 is provided with flex point, sealing-plug b30 is provided with the geometry flex point on the top of middle part ascent stage 23
Formed with sealed valve cap b29.
The bottom of lower feed zone 22 is 20-70 ° with the bottom connection angle of middle part ascent stage 23.
The top of upper feeding section 24 is 20-70 ° with the top connection angle of ascent stage 23.
The distance of the contact surface of sealing-plug 28 and material and flow direction of material geometry flex point is the 1~2 of middle part ascent stage diameter
Times.
The middle part and bottom of the lower feed zone 24 are provided with returning charge airduct 26, and returning charge airduct 26 is horizontal direction.
Beneficial effect：The utility model compared with prior art, devises sealing-plug and sealed valve cap, solves on middle part
The problem being not easily cleaned after the accumulation of section powder material and accumulation is risen, while serves buffering and wear-resistant protection effect；Sealed valve cap
Convenient disassembly, easy access and maintenance；Top discharge section top and middle part, which are provided with returning charge airduct, contributes to material steady into burner hearth
Flowing.Returning charge valve arrangement is simple, and flow resistance is low in valve, and maintenance is convenient.It is cheap.Through experiment, CFBB N
Type returning charge valve arrangement is compact, and operation is flexible, and valve body material requires low, and flow pressure drop reduces in valve, stable and reliable operation, significantly drop
Low manufacturing cost and operating cost；Facilitate installation and repairing, significantly extend service life and reduce clearance time and intensity.
Brief description of the drawings
Fig. 1 is CFBB N-type returning charge valve arrangement figure
21 vertical feeding pipelines, 22 times feed zones, 23 middle part ascent stages, 24 top discharge sections, 25 loosen airduct, 26 returning charge wind
Pipe, 27 sealed valve caps, 28 sealing-plugs.
Embodiment：
The utility model is described in further detail with reference to the accompanying drawings and examples.
CFBB N-type returning charge valve, it is that lower feed zone 22, middle part ascent stage 23 are connected by vertical feeding pipeline 21
With top discharge section 24, at the lower middle part of feed zone 22 with the loosening airduct 25 set by bottom, the geometry in the bottom of middle part ascent stage 23
Sealing-plug a28 and sealed valve cap a27 is provided with flex point, sealing-plug b30 is provided with the geometry flex point on the top of middle part ascent stage 23
Formed with sealed valve cap b29.
The bottom of lower feed zone 22 is 20-70 ° with the bottom connection angle of middle part ascent stage 23.
The top of upper feeding section 24 is 20-70 ° with the top connection angle of ascent stage 23.
The distance of the contact surface of sealing-plug 28 and material and flow direction of material geometry flex point is the 1~2 of middle part ascent stage diameter
Times.
The middle part and bottom of the lower feed zone 24 are provided with returning charge airduct 26, and returning charge airduct 26 is horizontal direction.
CFBB N-type returning charge valve, including vertical feeding pipeline 21, lower feed zone 22, the middle part ascent stage 23, on
Discharging section 24, auxiliary loosen airduct 25, auxiliary returning charge airduct 26, sealed valve cap 27, sealing-plug 28.
Auxiliary loosens the middle part and bottom that airduct 25 is arranged on lower feed zone 22, and sealed valve cap 27 is arranged on the middle part ascent stage
23 upper and lower part, auxiliary returning charge airduct 26 are arranged on the top and middle part of top discharge section 24.
The high-temperature solid particle material that cyclone separator separates enters lower feed zone 22 by vertical feeding pipeline 21,
The gas level that airduct 25 is loosened from auxiliary blows, and produces perpendicular to lower feed zone upwards and parallel to lower feed zone along material
Two component of flow direction, regulation air quantity can make material Uniform Flow.
Flow of Goods and Materials is to the lower end of feed zone 22, into the middle part ascent stage 23.Sealing-plug 28 is to flow direction of material geometry flex point
There is material retention in place space, serves the effect of buffering and wear-resistant protective layer, avoids powder material at wide-angle deflecting, right
Mechanical wear problem caused by equipment.
Material passes through the middle part ascent stage 23 into top discharge section 24, and the gas level from auxiliary returning charge airduct 26 blows,
Producing can make upwards and parallel to two component of the lower feed zone along Flow of Goods and Materials direction, regulation air quantity perpendicular to lower feed zone
Material Uniform Flow.
Lower feed zone 22 includes being arranged on middle part and the auxiliary of bottom loosens airduct 25, and the middle part ascent stage 23 includes being arranged on
The sealing-plug 28 and sealed valve cap 27 of upper and lower part, top discharge section 24 include being arranged on the returning charge airduct 26 at top and middle part.
Vertical feeding pipeline bottom turns on lower feed zone top, lower charging pars infrasegmentalis and the middle part ascent stage lower guide
It is logical, the middle part ascent stage top turned on the upper feeding section top.
The middle part ascent stage is provided with sealing-plug and the sealed valve cap.The contact surface of sealing-plug and material is several apart from flow direction of material
What 1~2 times of caliber of flex point.
It is 20-70 ° that lower charging pars infrasegmentalis rises pars infrasegmentalis connection angle with middle part.
Upper feeding section top is 20-70 ° with middle part ascent stage top connection angle.
The middle part and bottom of lower feed zone 22 are provided with auxiliary and loosen airduct 25, and auxiliary loosening airduct 25, which is set, is oriented level
Direction.
The top and middle part of top discharge section 24 are provided with returning charge airduct, and returning charge airduct sets and is oriented horizontal direction.
Operation logic of the present utility model is as follows：
1) from the high-temperature solid particle of cyclone separator separation from vertical feeding pipeline, by reentering lower charging certainly
Section.Compared to U-shaped feed back valve arrangement, flow resistance is significantly reduced.
2) middle part of feed zone and bottom are provided with auxiliary loosening airduct under, and gas level is blowed, produced perpendicular to lower charging
Section can make material Uniform Flow upwards and parallel to two component of the lower feed zone along Flow of Goods and Materials direction, regulation air quantity.
3) top and bottom of middle part ascent stage are provided with sealing-plug and sealed valve cap.The contact surface and thing of sealing-plug and material
Stream to the distance of geometry flex point be 1~2 times of middle part ascent stage diameter.During normal operation, the part is filled up by powder material,
The effect of buffering and wear-resistant protective layer is served, avoids powder material at wide-angle deflecting, machinery caused by equipment is ground
Damage problem.
4) sealing-plug and sealed valve cap are demountable structure, facilitate material in valve to occur to overhaul during the failures such as coking.
5) top of top discharge section and middle part are provided with auxiliary loosening airduct, and gas level is blowed, produced perpendicular to top discharge
Section can make material Uniform Flow upwards and parallel to two component of the top discharge section along Flow of Goods and Materials direction, regulation air quantity.
Claims (5)
1. a kind of CFBB N-type returning charge valve, it is feed zone (22) under being connected by vertical feeding pipeline (21), on middle part
Section (23) and top discharge section (24) are risen, the loosening airduct (25) in the middle part of lower feed zone (22) and set by bottom, it is characterised in that：
Sealing-plug a (28) and sealed valve cap a (27) is provided with the geometry flex point of middle part ascent stage (23) bottom, in the middle part ascent stage
(23) sealing-plug b (30) and sealed valve cap b (29) is provided with the geometry flex point on top to form.
2. according to the CFBB N-type returning charge valve described in claim 1, it is characterised in that：The lower feed zone (22)
Bottom is 20-70 ° with middle part ascent stage (23) bottom connection angle.
3. according to the CFBB N-type returning charge valve described in claim 1, it is characterised in that：The top discharge section (24)
Top is 20-70 ° with ascent stage (23) top connection angle.
4. according to the CFBB N-type returning charge valve described in claim 1, it is characterised in that：Sealing-plug 28 and material
The distance of contact surface and flow direction of material geometry flex point is 1~2 times of middle part ascent stage diameter.
5. according to the CFBB N-type returning charge valve described in claim 1, it is characterised in that：The lower feed zone (24)
Top and middle part be provided with returning charge airduct (26), returning charge airduct (26) is horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223351.XU CN206637615U (en) | 2016-11-14 | 2016-11-14 | CFBB N-type returning charge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223351.XU CN206637615U (en) | 2016-11-14 | 2016-11-14 | CFBB N-type returning charge valve |
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| Publication Number | Publication Date |
|---|---|
| CN206637615U true CN206637615U (en) | 2017-11-14 |
Family
ID=60261538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223351.XU Active CN206637615U (en) | 2016-11-14 | 2016-11-14 | CFBB N-type returning charge valve |
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| CN (1) | CN206637615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237467A (en) * | 2018-10-10 | 2019-01-18 | 贵州新能源开发投资股份有限公司 | A kind of circulating fluidized bed boiler returning charge valve |
-
2016
- 2016-11-14 CN CN201621223351.XU patent/CN206637615U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237467A (en) * | 2018-10-10 | 2019-01-18 | 贵州新能源开发投资股份有限公司 | A kind of circulating fluidized bed boiler returning charge valve |
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