CN203162934U - Furnace window type outlet device of biomass circulating fluidized bed boiler - Google Patents
Furnace window type outlet device of biomass circulating fluidized bed boiler Download PDFInfo
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- CN203162934U CN203162934U CN 201320149442 CN201320149442U CN203162934U CN 203162934 U CN203162934 U CN 203162934U CN 201320149442 CN201320149442 CN 201320149442 CN 201320149442 U CN201320149442 U CN 201320149442U CN 203162934 U CN203162934 U CN 203162934U
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- bed boiler
- outlet device
- outlet
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Abstract
The utility model relates to a furnace window type outlet device of a biomass circulating fluidized bed boiler. An outlet end is connected with an inlet flue of a cyclone separator through an expansion joint; an inlet end is connected with a furnace water cooling wall provided with a furnace outlet; a sealed channel is formed between the furnace outlet and the cyclone separator; an upper connection box and a lower connection box are connected into a rectangular window through at least two connection pipes; the upper connection box and the lower connection box are respectively communicated with the furnace water cooling wall through pipe junctions; and the connection pipes at two vertical sides of the rectangular window are respectively connected with a bent pipe outside a furnace back water cooling wall on the corresponding side and the furnace water cooling wall in the inlet direction to form a side sealing screen. The device solves the problems of the biomass circulating fluidized bed boiler, such as complicated outlet structure, large occupied space, high ash deposition possibility, high deformation possibility, inconvenient connection with the inlet of a cyclone separator and the like.
Description
Technical field
The utility model relates to the burner hearth window formula outlet device that matches with biomass fuel boiler, specifically refers to a kind of furnace outlet structure of biomass circulating fluid bed boiler.
Background technology
The generating mechanism of biomass direct combustion power generation factory is to utilize living beings (being agriculture and forestry organic waste material: rice husk, cotton stalk, rice straw, branch etc. and fowl and animal excrement) directly burning in CFBB, water in the stove is heated into the steam of certain parameter, steam is admitted to the turbine expansion work done, pushing turbine rotates at a high speed, and the steam turbine of high speed rotation drives generator again and outwards generates electricity.At present, many biomass power generation projects are formally put into commercial operation, also have a lot of projects to be in the construction period.Put into operation or at all CFBB generating sets of building, burner hearth and cyclone separator are arranged, wherein the furnace outlet device is the critical component of serial connection burner hearth and cyclone separator.Because CFBB exhaust pass height and width and the degree of depth thereof are all restricted, namely at the import wind speed that satisfies cyclone separator with do not influence under the situation in burner hearth smoke distribution and temperature field, should make things convenient for and being connected of water-cooling wall, expansion joint and cyclone separator, and size should be as far as possible little as far as possible.Directly bending with water screen tube in the furnace outlet device that forms in the past, all have more or less the furnace outlet complex structure, easily dust stratification, yielding, be connected shortcomings such as inconvenience with the separator import, in the time of seriously, even influence the continuous safe operation of power plant.
The utility model content
The technical problems to be solved in the utility model: a kind of biomass circulating fluid bed boiler furnace window formula outlet device is provided, mainly solve biomass circulating fluid bed boiler export complex structure, easily dust stratification, yielding, be connected problems such as inconvenience with the cyclone separator import.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of biomass circulating fluid bed boiler furnace window formula outlet device, the port of export links to each other with the inlet flue duct of cyclone separator by expansion joint, and arrival end is connected with the furnace wall cooling that offers furnace outlet and will forms the sealing flue between furnace outlet and cyclone separator; Mainly comprise upper header, lower collecting box, tube connector, sealing device, jockey, it is characterized in that:
Upper header and lower collecting box are connected to become rectangular window by at least two tube connectors; At the outlet device arrival end, upper header toward the upper end, lower collecting box is connected with water-cooling wall behind the burner hearth by pipe joint respectively toward the lower end, sealing device is set between furnace wall cooling constitutes and go up sealed screen and lower seal screen; Along the flue direction, the tube connector of the vertical both sides of rectangular window connects and composes the side seal screen by sealing device respectively and between the furnace wall cooling bend pipe of respective side, furnace wall cooling, pipe joint; Last sealed screen, lower seal screen and side seal screen form rectangular window sidepiece one sealed screen all around; Upper header is equipped with the jockey that is connected with expansion joint with lower collecting box with tube connector at the port of export.
By technique scheme, sealing device and jockey are steel plate or band steel.
By technique scheme, three tube connectors are set, wherein a tube connector is on the vertical center line between the tube connector of the vertical both sides of rectangular window.
By technique scheme, outlet device is inboard to arrange a downward inclination angle toward the burner hearth direction.
By technique scheme, a plurality of furnace outlets are set on the boiler furnace, each furnace outlet all links to each other with inlet flue duct of cyclone separator by a described biomass circulating fluid bed boiler furnace window formula outlet device.
The both sides tube connector constitutes the side seal screen with the bend pipe of water-cooling wall and the water-cooling wall sealing device by the band steel form respectively.Guarantee that flue sealing do not leak cigarette.
Welded the jockey that links to each other with expansion joint on the rectangle frame of last lower collecting box and both sides tube connector formation, generally made of steel plate, guaranteed the rigidity of expansion joint, guaranteed that expansion joint is indeformable.Guarantee that the abrasion-proof and refractory pouring material in the expansion joint does not ftracture, do not come off, and has prolonged service life.
Outlet device is inboard to have a downward inclination alpha (40 ~ 50 °) toward the burner hearth direction, and the separator inlet flue duct has a downward angle of inclination beta (〉=15 °) toward the separator direction, and both organically combine, and guarantee not dust stratification.
Principle of the present utility model is:
At first, through fully fluidisation after-combustion, divide equally by furnace outlet device number by the high-temperature flue gas of generation at boiler furnace for fuel, enter corresponding cyclone inlet flue respectively by the furnace outlet device, after the gas approach rectification, enter cyclone separator again, the realization flue gas separates with material.Because the separative efficiency of separator directly determines by the velocity of flue gas of the inlet flue duct of cyclone separator of flowing through and the depth-width ratio of flue, so size and the depth-width ratio thereof of the furnace outlet that directly links to each other with inlet flue duct of cyclone separator just seem most important.And designed burner hearth window formula outlet device possesses short depth, and the depth-width ratio size not only provides the space for inlet flue duct of cyclone separator flexibly, and for the depth-width ratio in its cross section provides the sufficient free degree, has also shortened the span of supporting frame.
Simultaneously, the short burner hearth window formula outlet device of depth has bigger downward inclination alpha (40 ~ 50 °) to the burner hearth direction, the separator inlet flue duct has a downward-sloping angle beta (〉=15 °) toward the separator direction, its combining structure makes the soot particle of sedimentation in the flue gas be difficult for piling up, and can enter burner hearth or cyclone separator soon.
In addition, depth is better than short burner hearth window formula outlet device rigidity, not yielding, make that the expansion joint that directly links to each other with it is indeformable in running, the abrasion-proof and refractory pouring material of expansion joint inside does not ftracture yet, does not come off, do not leak to guarantee the expansion joint sealing, operate as normal, thereby prolonged service life of expansion joint, guarantee that the boiler unit moves continuously, reduce accident and taken place and maintenance workload, had good economic benefit and social benefit.
Description of drawings
Accompanying drawing 1 is living beings boiler hearth of circulating fluidized bed window formula outlet device installation diagram (side view);
Accompanying drawing 2 is living beings boiler hearth of circulating fluidized bed window formula outlet device front view (A-A of Fig. 1 is to view);
Accompanying drawing 3 is living beings boiler hearth of circulating fluidized bed window formula outlet device structural representation (side view of Fig. 2).
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Biomass circulating fluid bed boiler furnace window formula outlet device 2 shown in Fig. 1-3, its port of export links to each other with the inlet flue duct 4 of cyclone separator 5 by expansion joint 3, arrival end is resisted against on the burner hearth 1 and with the furnace wall cooling 1.1 that offers furnace outlet and is connected, and 5 in furnace outlet and cyclone separator form seal channel; Mainly comprise upper header 2.1, lower collecting box 2.2, tube connector 2.3, sealing device 2.5, jockey 2.4, window formula outlet device 2 profiles are rectangular, are up and down headers, and last lower collecting box (upper header 2.1, lower collecting box 2.2) links to each other by tube connector 2.3.Lower collecting box links to each other with furnace wall cooling 1.1 along the pipe joint 2.6 that the rectangular window width distributes by each end respectively on it, connect and compose the side seal screen by sealing device 2.5 between the furnace wall cooling bend pipe 1.2 of the tube connector 2.3 of both sides and the respective side of furnace wall cooling 1.1 and furnace wall cooling 1.1 and the pipe joint 2.6, last lower collecting box (upper header 2.1, lower collecting box 2.2) and pipe joint 2.6 thereof and furnace wall cooling 1.1 constitute the upper-lower seal screen by sealing device 2.5, and the upper-lower seal screen will constitute sealing with the side seal screen is whole around the rectangular window sidepiece.Header (upper header 2.1, lower collecting box 2.2) is equipped with the jockey 2.4 that links to each other with expansion joint specially with tube connector 2.3 at the port of export.Sealing device 2.5 around furnace wall cooling 1.1, upper header 2.1, lower collecting box 2.2, tube connector 2.3, furnace wall cooling bend pipe 1.2 and the rectangular window sidepiece all is welded with pin (omiting among the figure) at the arrival end of outlet device, lay certain thickness abrasion-proof fire-resistant moldable refractory on the pin, it is wear-resistant down to guarantee that flue washes away at high-temperature flue gas, operate as normal.Header (upper header 2.1, lower collecting box 2.2) external diameter is φ 219mm, and tube connector 2.3 external diameters are φ 159mm, and pipe joint 2.6 external diameters are φ 60, and consistent with furnace wall cooling 1.1 externals diameter of pipe, its material is all selected 20G for use.
Sealing device 2.5 and jockey 2.4 adopt 20# steel plate or band steel.
During the utility model work: fuel is shunted by furnace outlet device number average is even at the high-temperature flue gas that boiler furnace produces behind abundant fluidized bed combustion, enters corresponding cyclone inlet flue respectively by the furnace outlet device.After the gas approach rectification, enter cyclone separator again, the realization flue gas separates with material.Both satisfied the needs of separator flue gas drainage, guaranteed again that expansion joint has certain rigid and indeformable.Therefore, both guaranteed that high-temperature flue gas did not leak in the process that is entered separator by the furnace outlet device, guaranteed again flue inside not dust stratification, abrasion-proof and refractory pouring material do not ftracture, not damaged, improved the whole abrasion resistance properties of flue, prolonged service life of equipment.
Claims (5)
1. biomass circulating fluid bed boiler furnace window formula outlet device, the port of export links to each other with the inlet flue duct of cyclone separator by expansion joint, and arrival end is connected with the furnace wall cooling that offers furnace outlet and will forms the sealing flue between furnace outlet and cyclone separator; Mainly comprise upper header, lower collecting box, tube connector, sealing device, jockey, it is characterized in that:
Upper header and lower collecting box are connected to become rectangular window by at least two tube connectors; At the outlet device arrival end, upper header toward the upper end, lower collecting box is connected with water-cooling wall behind the burner hearth by pipe joint respectively toward the lower end, sealing device is set between furnace wall cooling constitutes and go up sealed screen and lower seal screen; Along the flue direction, the tube connector of the vertical both sides of rectangular window connects and composes the side seal screen by sealing device respectively and between the furnace wall cooling bend pipe of respective side, furnace wall cooling, pipe joint; Last sealed screen, lower seal screen and side seal screen form rectangular window sidepiece one sealed screen all around; Upper header is equipped with the jockey that is connected with expansion joint with lower collecting box with tube connector at the port of export.
2. biomass circulating fluid bed boiler furnace window formula outlet device according to claim 1, it is characterized in that: sealing device and jockey are steel plate or band steel.
3. biomass circulating fluid bed boiler furnace window formula outlet device according to claim 1 and 2, it is characterized in that: three tube connectors are set, and wherein a tube connector is on the vertical center line between the tube connector of the vertical both sides of rectangular window.
4. biomass circulating fluid bed boiler furnace window formula outlet device according to claim 3 is characterized in that: outlet device is inboard to arrange a downward inclination angle toward the burner hearth direction.
5. according to claim 1 or 2 or 4 described biomass circulating fluid bed boiler furnace window formula outlet devices, it is characterized in that: a plurality of furnace outlets are set on the boiler furnace, and each furnace outlet all links to each other with inlet flue duct of cyclone separator by a described biomass circulating fluid bed boiler furnace window formula outlet device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149442 CN203162934U (en) | 2013-03-29 | 2013-03-29 | Furnace window type outlet device of biomass circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149442 CN203162934U (en) | 2013-03-29 | 2013-03-29 | Furnace window type outlet device of biomass circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203162934U true CN203162934U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320149442 Expired - Fee Related CN203162934U (en) | 2013-03-29 | 2013-03-29 | Furnace window type outlet device of biomass circulating fluidized bed boiler |
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| CN (1) | CN203162934U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303617A (en) * | 2020-10-29 | 2021-02-02 | 哈尔滨锅炉厂有限责任公司 | Connecting device for connecting inlet flue of adiabatic separator with water-cooled separator |
| CN112361367A (en) * | 2020-12-10 | 2021-02-12 | 湖北金炉节能股份有限公司 | High-temperature fluidized furnace |
-
2013
- 2013-03-29 CN CN 201320149442 patent/CN203162934U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303617A (en) * | 2020-10-29 | 2021-02-02 | 哈尔滨锅炉厂有限责任公司 | Connecting device for connecting inlet flue of adiabatic separator with water-cooled separator |
| CN112361367A (en) * | 2020-12-10 | 2021-02-12 | 湖北金炉节能股份有限公司 | High-temperature fluidized furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20210329 |