CN203836961U - Non-premixing central air supply multi-pipe gas afterburner - Google Patents
Non-premixing central air supply multi-pipe gas afterburner Download PDFInfo
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- CN203836961U CN203836961U CN201420281025.9U CN201420281025U CN203836961U CN 203836961 U CN203836961 U CN 203836961U CN 201420281025 U CN201420281025 U CN 201420281025U CN 203836961 U CN203836961 U CN 203836961U
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Abstract
The utility model provides a non-premixing central air supply multi-pipe gas afterburner. A barrel is a segmental of metal pipe; holes in the two ends of the pipe are hermetically connected with an air side disk and a flue gas side disk respectively; the centers of the air side disk and the flue gas side disk are provided with through holes; air nozzles penetrating the length are hermetically connected in the through holes; six gas nozzles which are uniformly distributed on a circular ring taking the air nozzles as the centers are arranged on the flue gas side disk; a hole is formed in a position, which is not communicated with the air nozzles, on the barrel, and is hermetically connected with a fuel gas inlet pipe. The non-premixing central air supply multi-pipe gas afterburner has the characteristics of simple basic structure, large demand range of applicable fuel replenishing amount, stable combustion in a high-speed flue gas flowing area, uniform temperature distribution, shortening of the length of the inlet flue of a waste heat boiler, reduction of the cost, and the like.
Description
Technical field:
The utility model relates to waste heat boiler burner field, is specifically related to a kind of non-premixed center air feed multitube gas afterburner.
Background technology:
For improving vapor (steam) temperature or output, waste heat boiler need adopt afterburning system conventionally.Afterburning system is divided into interior afterburning and outer afterburning.
Because outer afterburning system need be provided with in boiler front portion special-purpose outer cylinder, its investment is higher, operation maintenance inconvenience, and boiler structure is complicated, therefore only very large in afterburning amount or user explicitly call for Shi Caihui adopt outside afterburning scheme.
Interior afterburning system is generally installed in boiler inlet flue, utilize excess enthalpy air in combustion machine smoke evacuation as combustion air, utilize the inner space of gas approach as afterburning combustion chamber, needn't separately establish combustion chamber and burning blower fan, having the features such as system is simple, equipment investment is few, operation maintenance is convenient, is the afterburning scheme that waste heat boiler more often adopts.
At present, conventionally combustion-compensating device in the waste heat boiler of selecting both at home and abroad, mostly all can not smooth combustion in high speed flue gas district, and there is the defects such as temperature distributing disproportionation is even, therefore can only be arranged in low speed flue gas district and burn, this arrangement can extend the gas approach length of waste heat boiler, increases the production cost of waste heat boiler.
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Utility model content:
Technological difficulties to be solved in the utility model are: overcome combustion-compensating device in general waste heat boiler and can only be arranged in the defect of burning in low speed flue gas district, realize the smooth combustion of afterburning gas in high speed flow of flue gas region.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: non-premixed center air feed multitube gas afterburner, comprise cylindrical shell, cylindrical shell is one section of metal pipe, pipe two stomidiums are airtight air side disk and the fume side disk of being connected with respectively, the center of air side disk and fume side disk has through hole, in through hole, airtight connection connects the air nozzle of length, on fume side disk, have six gas nozzles uniform on the annulus centered by air nozzle, on cylindrical shell with the obstructed position of air nozzle on the airtight combustion gas inlet pipe that is connected with of perforate.
Expansion scheme as such scheme, an above-mentioned air nozzle should have the structure of six roots of sensation gas nozzle relatively, expansion is, air nozzle is the adjacent layout of hexagonal, every group of air nozzle and its corresponding six roots of sensation nozzle ring are around air nozzle, the position that the hexagon summit of the air nozzle of adjacent layout overlaps, shares a gas nozzle.
Described gas nozzle is section of a pipe, and gas nozzle is outside concordant with fume side disk, and length direction extends to inner barrel, and the length of gas nozzle depends on the size multiple of its ips, and the length of gas nozzle equals five to six times of its internal diameter size.
The utlity model has following beneficial effect: non-premixed center of the present utility model air feed multitube gas afterburner, thereby have simple, the applicable afterburning amount range of needs of basic structure large, can be in high speed flow of flue gas region smooth combustion, uniformity of temperature profile and can shorten the features such as HRSG Inlet Duct length reduces costs.
Accompanying drawing explanation:
Fig. 1 structural representation of the present utility model;
Fig. 2 is the right view of accompanying drawing 1;
Fig. 3 is the utility model Extended forms structural representation.
1-cylindrical shell in figure, 2-combustion gas inlet pipe, 3-air nozzle, 4-air side disk, 5-fume side disk, 6-gas nozzle.
The specific embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
By Fig. 1 in conjunction with shown in Fig. 2, Fig. 3, non-premixed center air feed multitube gas afterburner, comprise cylindrical shell 1, cylindrical shell 1 is one section of metal pipe, pipe two stomidiums are airtight air side disk 4 and the fume side disk 5 of being connected with respectively, the center of air side disk 4 and fume side disk 4 has through hole, in through hole, airtight connection connects the air nozzle 3 of length, on fume side disk 5, have six gas nozzles 6 uniform on the annulus centered by air nozzle 3, on cylindrical shell 1 with the obstructed position of air nozzle 3 on the airtight combustion gas inlet pipe 2 that is connected with of perforate.
Expansion scheme as such scheme, an above-mentioned air nozzle 3 should have the structure of six roots of sensation gas nozzle 6 relatively, expansion is, air nozzle 3 is the adjacent layout of hexagonal, every group of air nozzle 3 and its corresponding six roots of sensation nozzle 6 are looped around around air nozzle 3, the position that the hexagon summit of the air nozzle 3 of adjacent layout overlaps, shares a gas nozzle 6.
Described gas nozzle 6 is section of a pipe, gas nozzle 6 is outside concordant with fume side disk 5, length direction extends to cylindrical shell 1 is inner, and the length of gas nozzle 6 depends on the size multiple of its ips, and the length of gas nozzle 6 equals five to six times of its internal diameter size.
The mode of jet of employing center air feed, circumferentially confession combustion gas meets the demand that combustion gas is burnt in high speed flow of flue gas region; Setting up air nozzle and gas jet orifice is that hexagonal arrangement, afterburning amount are 50-150Nm
3the different basic structure afterburners of/h; According to the demand of the structure in afterburning space and actual afterburning amount, select applicable basic structure afterburner, and take its as basis according to the nested arrangement of the similar hexagon layout that superposes, form final prolongation structure.
The mode of jet of described employing " center air feed, circumferentially supply combustion gas ", centered by single air nozzle 3, each air duct is joined a nozzle and independent mutually, and gas nozzle 6 is set around at single air nozzle, and blast tube and air duct are separated by.
The basic structure mode of described employing " air nozzle and gas jet orifice are arranged as hexagon ", is characterized in that: air nozzle 3 is arranged in respectively place, hexagonal summit, and each air nozzle 3 is arranged six gas nozzles 6 by hexagon mode around.
The prolongation structure mode of described employing " by similar hexagon nested arrangement ", it is characterized in that: according to size and hexagonal shape and the arrangement of basic structure afterburner air and gas nozzle 3, take every layer of air nozzle 3 numbers as 6n(be that ground floor number is 6, n number of layers is 6n) mode expand to the periphery, the principle that the number of gas nozzle 6 is equipped with six gas nozzles 6 around according to single air nozzle 3 is carried out completion, finally forms the nested structure of similar hexagon.
Combustion gas imports via combustion gas inlet pipe 3, and sprays into combustion chamber after being assigned to different gas nozzle 6 by fume side disk 5; After entering air nozzle 3 via air leading-in conduit 2, the air that comes from air side disk 4 outsides is injected into combustion chamber; After air and combustion gas mixing, by start-up burner, lighted, carry out immediately the burning of continous-stable.
Claims (3)
1. a non-premixed center air feed multitube gas afterburner, comprise cylindrical shell (1), it is characterized in that: cylindrical shell (1) is one section of metal pipe, pipe two stomidiums are airtight air side disk (4) and the fume side disk (5) of being connected with respectively, the center of air side disk (4) and fume side disk (4) has through hole, in through hole, airtight connection connects the air nozzle (3) of length, on fume side disk (5), have six gas nozzles (6) uniform on the annulus centered by air nozzle (3), the airtight combustion gas inlet pipe (2) that is connected with of perforate on the upper and obstructed position of air nozzle (3) of cylindrical shell (1).
2. non-premixed center according to claim 1 air feed multitube gas afterburner, it is characterized in that: as the expansion scheme of such scheme, an above-mentioned air nozzle (3) should have the structure of six roots of sensation gas nozzle (6) relatively, expansion is, air nozzle (3) is the adjacent layout of hexagonal, every group of air nozzle (3) and its corresponding six roots of sensation nozzle (6) are looped around air nozzle (3) around, the position that the hexagon summit of the air nozzle of adjacent layout (3) overlaps, shares a gas nozzle (6).
3. non-premixed center according to claim 1 air feed multitube gas afterburner, it is characterized in that: described gas nozzle (6) is section of a pipe, gas nozzle (6) is outside concordant with fume side disk (5), length direction extends to cylindrical shell (1) is inner, the length of gas nozzle (6) depends on the size multiple of its ips, and the length of gas nozzle (6) equals five to six times of its internal diameter size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281025.9U CN203836961U (en) | 2014-05-29 | 2014-05-29 | Non-premixing central air supply multi-pipe gas afterburner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281025.9U CN203836961U (en) | 2014-05-29 | 2014-05-29 | Non-premixing central air supply multi-pipe gas afterburner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836961U true CN203836961U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420281025.9U Active CN203836961U (en) | 2014-05-29 | 2014-05-29 | Non-premixing central air supply multi-pipe gas afterburner |
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| CN (1) | CN203836961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006386A (en) * | 2014-05-29 | 2014-08-27 | 中国船舶重工集团公司第七�三研究所 | Non-premixed central air supply multi-tube gas afterburner |
-
2014
- 2014-05-29 CN CN201420281025.9U patent/CN203836961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006386A (en) * | 2014-05-29 | 2014-08-27 | 中国船舶重工集团公司第七�三研究所 | Non-premixed central air supply multi-tube gas afterburner |
| CN104006386B (en) * | 2014-05-29 | 2017-01-04 | 中国船舶重工集团公司第七�三研究所 | Non-premixed center air feed multitube gas afterburner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150929 Address after: 150000 No. 35, Honghu Road, Yingbin Road, Harbin hi tech Development Zone, Heilongjiang, China Patentee after: Harbin broad power technology development Co., Ltd. Address before: 150000 Honghu Road, Daoli District, Heilongjiang, No. 35, Harbin Patentee before: No.703 Inst. China Ship Heavy Industry Group Co. |