CN203893216U - Oscillating-type one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler - Google Patents
Oscillating-type one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler Download PDFInfo
- Publication number
- CN203893216U CN203893216U CN201420027828.1U CN201420027828U CN203893216U CN 203893216 U CN203893216 U CN 203893216U CN 201420027828 U CN201420027828 U CN 201420027828U CN 203893216 U CN203893216 U CN 203893216U
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- Prior art keywords
- secondary air
- attached wall
- hinged
- leading screw
- female pipe
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- 239000003245 coal Substances 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract 5
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010058490 Hyperoxia Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000000222 hyperoxic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Air Supply (AREA)
Abstract
The utility model provides an oscillating-type one-way wall-attached secondary air device of a pulverized coal fired boiler and the pulverized coal fired boiler. The bottom ends of wall-attached secondary air spray ports are respectively hinged with one end of secondary air main pipes; one end of a connecting rod mechanism is hinged onto the side walls of the wall-attached secondary air spray ports and the other end of the connecting rod mechanism is hinged with one end of a lead screw; a lead screw nut which is adaptively connected with the lead screw is installed in an installation hole formed in the closed end of a shell, the lead screw nut is fixedly installed in the installation hole and is rotatably connected with the installation hole, a hand wheel is arranged outside the shell and is fixedly connected with the other end of the lead screw or the lead screw nut; the hand wheel is used for turning the lead screw or the lead screw nut to extend or retract the lead screw, so as to drive the connecting rod mechanism to adjust the angles of the wall-attached secondary air spray ports. The device and the pulverized coal fired boiler provided by the utility model have the advantages that the angles of the wall-attached secondary air spray port can be adjusted, the input of displacement is realized by adopting a lead screw nut structure, the transmission ratio is large, the output displacement accuracy is high and the wall-attacked secondary air spray ports can work at any positions within a preset angle range.
Description
Technical field
The utility model relates to boiler combustion technology field, relates in particular to a kind of unidirectional attached wall overfire air device of swing type and pulverized-coal fired boiler of pulverized-coal fired boiler.
Background technology
The pulverized-coal fired boiler with attached wall Secondary Air, has reduced burner hearth and along journey, has entered reductive NO material HCN, NH from top to bottom
i, CO etc., and make Secondary Air enter in right amount " near wall region " that coke is assembled in good time, thereby improved burner hearth from bottom to top along journey region coke burn-off rate and NO percent reduction, make less coke enter burning-out zone, can make after-flame wind be arranged in the position that burner hearth is higher.After the flue gas stream that rises on attached wall Secondary Air and center is compound, also expanded the water-cooling wall surface range that primary zone, reducing zone have the low solid concentration characteristic of low temperature hyperoxia, improved the ability of water-cooling wall resistive connection slag and high temperature corrosion, reached and reduce burner hearth NO
xdischarge capacity, improves efficiency of combustion and avoids Boiler Furnace slagging and three objects that function is effectively taken into account of high temperature corrosion generation.A kind of pulverized-coal fired boiler with attached wall Secondary Air as shown in Figure 1A, is provided with attached wall overfire air device 41 at boiler middle part.The deployment of attached wall overfire air port as shown in Figure 1B arranges a plurality of attached wall overfire air ports 42 in the inner chamber 43 of boiler and in the inner side of sidewall 44.At present, the attached wall overfire air device of most of pulverized-coal fired boilers is all fixed structure, can not adjust the angle of attached wall overfire air port, can not, according to the blowing to of different Operating condition adjustment Secondary Airs, reduce the result of use of boiler.Therefore, need a kind of attached wall overfire air device that can adjust the angle of attached wall overfire air port.
Utility model content
In view of this, the unidirectional attached wall overfire air device of swing type that a technical problem to be solved in the utility model is to provide a kind of pulverized-coal fired boiler, can regulate the angle of attached wall overfire air port.
The unidirectional attached wall overfire air device of swing type of pulverized-coal fired boiler, comprising: spout body assembly, transmission mechanism and executing agency; Described spout body assembly comprises: the female pipe of attached wall overfire air port and Secondary Air; Described transmission mechanism comprises: linkage and leading screw; Described executing agency comprises: feed screw nut, handwheel and housing; One end of the female pipe of the bottom of described attached wall overfire air port and described Secondary Air is hinged; One end of described linkage is hinged on the sidewall of described attached wall overfire air port, and the other end of described linkage and one end of described leading screw are hinged; One end sealing of described housing, be arranged in the installing hole of described housings close end the described feed screw nut being connected with described leading screw is housed, described feed screw nut is fixedly mounted in described installing hole or is rotationally connected with described installing hole, and described handwheel is arranged on outside described housing and is fixedly connected with the other end or the described feed screw nut of described leading screw; Described in described hand wheel rotating, leading screw or described feed screw nut make described leading screw stretch out or shrink, and drive described linkage to regulate the angle of described attached wall overfire air port.
According to an embodiment of the present utility model, further, the quantity of the female pipe of described attached wall overfire air port and described Secondary Air is all 2, and the female pipe of described attached wall overfire air port and described Secondary Air is corresponding setting one by one; Described linkage comprises: 2 linkages, connecting plate and leading screws; One end of described 2 linkages is hinged with a described attached wall overfire air port respectively, and the other end of described 2 linkages is all hinged on described connecting plate; One end of described leading screw is hinged on described connecting plate.
According to an embodiment of the present utility model, further, described linkage comprises: carry out connecting rod and regulating connecting rod; One end of described execution connecting rod and one end of described regulating connecting rod are hinged, and the other end of described execution connecting rod and the other end of described regulating connecting rod are hinged with described attached wall overfire air port and described connecting plate respectively.
According to an embodiment of the present utility model, further, on the sidewall of the female pipe of described Secondary Air, one or more stopping means are set vertically, and on described stopping means, through hole are all set; One end of described execution connecting rod is respectively through the through hole on one or more stopping means hinged with described attached wall overfire air port.
According to an embodiment of the present utility model, further, on the sidewall of the female pipe of described Secondary Air, 2 stopping means are set vertically.
According to an embodiment of the present utility model, further, described spout body assembly also comprises: fragmenting plate; Described fragmenting plate is arranged between the female pipe of described 2 Secondary Airs, and the two ends of described fragmenting plate are hinged with the described stopping means being arranged on the female pipe of described 2 Secondary Airs sidewall respectively.
According to an embodiment of the present utility model, further, the female pipe of described Secondary Air is by secondary air bellow air distribution; The female pipe of described Secondary Air is arranged in secondary air bellow, and is fixedly connected with described secondary air bellow by alignment pin.
According to an embodiment of the present utility model, further, one end of the female pipe of the bottom of described attached wall overfire air port and described Secondary Air is hinged by bearing pin; One end of described bearing pin is spherical structure.
According to an embodiment of the present utility model, further, described executing agency also comprises: leading screw sleeve; Described leading screw sleeve is fixedly installed on described enclosure interior, and is enclosed within the outside of described leading screw.
A pulverized-coal fired boiler, comprises the unidirectional attached wall overfire air device of swing type of pulverized-coal fired boiler as above.
The unidirectional attached wall overfire air device of swing type and the pulverized-coal fired boiler of pulverized-coal fired boiler of the present utility model, can regulate the angle of attached wall overfire air port, adopt screw-nut structure to realize the input of displacement, gearratio is large and output displacement precision is high, and attached wall overfire air port can be worked any position in predetermined angular range.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1A is the schematic diagram with attached wall Secondary Air pulverized-coal fired boiler of the prior art;
Figure 1B is the deployment schematic diagram of the attached wall overfire air port boiler in boiler in prior art;
Fig. 2 A to 2E is according to the schematic diagram of an embodiment of the unidirectional attached wall overfire air device of the swing type of pulverized-coal fired boiler of the present utility model, wherein, Fig. 2 A is the structure chart of the unidirectional attached wall overfire air device of swing type, Fig. 2 B is the component diagram of spout body assembly, Fig. 2 C is A-A cross-sectional view in Fig. 2 B, Fig. 2 D is the component diagram of transmission mechanism, and Fig. 2 E is the component diagram of executing agency.
The specific embodiment
With reference to the accompanying drawings the utility model is described more fully, exemplary embodiment of the present utility model is wherein described.Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.Below in conjunction with figure and embodiment, the technical solution of the utility model is carried out to many-sided description.
Shown in Fig. 2 A to 2E, the unidirectional attached wall overfire air device of the swing type of pulverized-coal fired boiler comprises: spout body assembly 01, transmission mechanism 02He executing agency 03.
Spout body assembly comprises: the female pipe 12 of attached wall overfire air port 11 and Secondary Air.Transmission mechanism comprises: linkage and leading screw 25.Executing agency comprises: feed screw nut 32, handwheel 31 and housing 34.
One end of the female pipe 12 of the bottom of attached wall overfire air port 11 and Secondary Air is hinged.One end of linkage is hinged on the sidewall 11 of attached wall overfire air port, and one end of the other end of linkage and leading screw 25 is hinged.
One end sealing of housing, is arranged in the installing hole of housings close end the feed screw nut 32 being connected with leading screw 25 is housed.Wherein, feed screw nut 32 is fixedly mounted in installing hole or can in installing hole, rotates, and handwheel 31 is arranged on and connects outside housing, and is fixedly connected with the other end of feed screw nut or leading screw.
According to an embodiment of the present utility model, linkage can be multiple linkage of the prior art, and hand wheel rotating leading screw or feed screw nut, stretch out leading screw or shrink, and regulates the angle of attached wall overfire air port by linkage.
According to an embodiment of the present utility model, attached wall overfire air port 11 is arranged on the sidewall of burner hearth, the female pipe 12 of Secondary Air, transmission mechanism 02 and executing agency 03, according to the specific design of boiler, can be arranged in boiler and also can be arranged on the device outside boiler.For example, the housing of executing agency can be fixed on the outer wall of boiler, also can be fixed in the fixed base of boiler outer setting.
According to an embodiment of the present utility model, the quantity of the female pipe of attached wall overfire air port and Secondary Air is all 2, and the female pipe 12 of attached wall overfire air port 11 and Secondary Air is corresponding setting one by one.
Linkage has and comprises: 2 linkages, connecting plate 24 and leading screws 25.One end of 2 linkages is hinged with an attached wall overfire air port 11 respectively, and the other end of 2 linkages is all hinged on connecting plate 24.One end of leading screw 25 is hinged on connecting plate 25.Leading screw 25 is single rectilinear motion, connecting plate 24 and regulating connecting rod are delivered to left and right by the displacement of leading screw and carry out on connecting rod 21, can control the adjusting of 2 attached wall overfire air ports 11 simultaneously, carry out collaborative work, can realize the optional position work of attached wall overfire air port 11 within the scope of 0 °-15 °.
According to an embodiment of the present utility model, linkage comprises: carry out connecting rod 21 and regulating connecting rod.Carry out one end of connecting rod 21 and one end of regulating connecting rod hinged, carry out the other end of connecting rod 21 and the other end of regulating connecting rod hinged with attached wall overfire air port 11 and connecting plate 24 respectively.
According to an embodiment of the present utility model, regulating connecting rod can be comprised of 2 connecting rods 22 and adjusting device 23, by adjusting device 23,2 connecting rods 22 is coupled together.Adjusting device can have various structures, for example, can be shaft coupling, by shaft coupling, connects 2 connecting rods 22; Can be the sleeve pipe with threaded central aperture, the screw thread of 2 connecting rod 22 one end be connected etc. with the two ends of threaded central aperture respectively.By adjusting device 23, connect 2 connecting rods 22, can to the length of regulating connecting rod, regulate according to the actual needs, thereby meet actual installation needs.
According to an embodiment of the present utility model, on the sidewall of the female pipe 12 of Secondary Air, one or more stopping means 16 are set vertically, and through hole is all set on stopping means 16.Carry out one end of connecting rod 21 respectively through the through hole on one or more stopping means 16 hinged with attached wall overfire air port 11.
The quantity of stopping means 15 can design according to specific circumstances, for example, on the sidewall of the female pipe 12 of Secondary Air, 2 stopping means 16 is set vertically.The displacement that execution connecting rod 21 receives is not single direction, so will carry out to it restriction of the free degree, stopping means is exactly to limit carrying out the traffic direction of connecting rod for realizing.
According to an embodiment of the present utility model, one end of the female pipe 12 of the bottom of attached wall overfire air port 11 and Secondary Air is hinged by bearing pin 14, and one end of bearing pin 14 is spherical structure, and spherical structure can guarantee that rotation flexibly under hot operating mode.
The other end of carrying out connecting rod 21 is hinged with attached wall overfire air port 11 by connecting bearing pin 15, the displacement that transmission mechanism transmits drives attached wall overfire air port 11 by connecting bearing pin 15, rotation centered by bearing pin 14, thus realize the oscillating function of attached wall overfire air port.
According to an embodiment of the present utility model, fragmenting plate 17 is arranged between the female pipe 12 of 2 Secondary Airs, and the two ends of fragmenting plate 17 are hinged with the stopping means 16 being arranged on the female pipe of 2 Secondary Airs 12 sidewalls respectively.The quantity of fragmenting plate 17 can be set as required.
According to an embodiment of the present utility model, the female pipe 12 of Secondary Air is by secondary air bellow air distribution.The female pipe 12 of Secondary Air is arranged in secondary air bellow, and is fixedly connected with secondary air bellow by alignment pin 13.
According to an embodiment of the present utility model, leading screw sleeve 39 is fixedly installed on the inside of housing 34, and is enclosed within the outside of leading screw 25.Asbestos packing 38 is arranged in leading screw sleeve 39, and by the one end at leading screw sleeve 39, housing screw 36 and gland 37 is set, and the asbestos packing in leading screw sleeve 39 38 is compressed.
The rectilinear motion that jam nut 33 restriction feed screw nuts 32 are set in one end of housing 34, feed screw nut 32 can rotate in installing hole.Indicating device 35 is arranged in housing 34, and the pointer of indicating device is connected with leading screw 25, and in one end of pointer, scale is set, the displacement of indication leading screw 25.
According to an embodiment of the present utility model, a kind of pulverized-coal fired boiler comprises the unidirectional attached wall overfire air device of the swing type of pulverized-coal fired boiler as above.
The unidirectional attached wall overfire air device of swing type and the pulverized-coal fired boiler of pulverized-coal fired boiler of the present utility model, can regulate the angle of attached wall overfire air port, adopt screw-nut structure to realize the input of displacement, gearratio is large and output displacement precision is high, and attached wall overfire air port can be worked any position in predetermined angular range.
Above-mentioned arbitrary technical scheme disclosed in the utility model unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the utility model just discloses part numerical value to illustrate the technical solution of the utility model, and the above-mentioned numerical value of enumerating should not form the restriction of the utility model being created to protection domain.
Simultaneously, if above-mentioned the utility model discloses or has related to parts or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can dismantle and be fixedly connected with (for example using bolt or screw to connect), also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously cannot adopt except integrally formed technique) by integral type structure (use casting technique is integrally formed to be created).
In addition, in the disclosed arbitrary technical scheme of above-mentioned the utility model applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts that the utility model provides can be both to be assembled by a plurality of independent parts, the produced separate part of the technique that also can be one of the forming.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (10)
1. the unidirectional attached wall overfire air device of the swing type of pulverized-coal fired boiler, is characterized in that, comprising:
Spout body assembly, transmission mechanism and executing agency; Described spout body assembly comprises: the female pipe of attached wall overfire air port and Secondary Air; Described transmission mechanism comprises: linkage and leading screw; Described executing agency comprises: feed screw nut, handwheel and housing;
One end of the female pipe of the bottom of described attached wall overfire air port and described Secondary Air is hinged; One end of described linkage is hinged on the sidewall of described attached wall overfire air port, and the other end of described linkage and one end of described leading screw are hinged; One end sealing of described housing, be arranged in the installing hole of described housings close end the described feed screw nut being connected with described leading screw is housed, described feed screw nut is fixedly mounted in described installing hole or is rotationally connected with described installing hole, and described handwheel is arranged on outside described housing and is fixedly connected with the other end or the described feed screw nut of described leading screw; Described in described hand wheel rotating, leading screw or described feed screw nut make described leading screw stretch out or shrink, and drive described linkage to regulate the angle of described attached wall overfire air port.
2. device as claimed in claim 1, is characterized in that:
The quantity of the female pipe of described attached wall overfire air port and described Secondary Air is all 2, and the female pipe of described attached wall overfire air port and described Secondary Air is corresponding setting one by one;
Described linkage comprises: connecting plate, leading screw and 2 linkages; One end of described 2 linkages is hinged with a described attached wall overfire air port respectively, and the other end of described 2 linkages is all hinged on described connecting plate; One end of described leading screw is hinged on described connecting plate.
3. device as claimed in claim 2, is characterized in that:
Described linkage comprises: carry out connecting rod and regulating connecting rod;
One end of described execution connecting rod and one end of described regulating connecting rod are hinged, and the other end of described execution connecting rod and the other end of described regulating connecting rod are hinged with described attached wall overfire air port and described connecting plate respectively.
4. device as claimed in claim 3, is characterized in that:
On the sidewall of the female pipe of described Secondary Air, one or more stopping means are set vertically, and on described stopping means, through hole are all set; One end of described execution connecting rod is respectively through the through hole on one or more stopping means hinged with described attached wall overfire air port.
5. device as claimed in claim 4, is characterized in that:
On the sidewall of the female pipe of described Secondary Air, 2 stopping means are set vertically.
6. device as claimed in claim 5, is characterized in that:
Described spout body assembly also comprises: fragmenting plate;
Described fragmenting plate is arranged between the female pipe of described 2 Secondary Airs, and the two ends of described fragmenting plate are hinged with the stopping means being arranged on the female pipe of described 2 Secondary Airs sidewall respectively.
7. device as claimed in claim 2, is characterized in that:
The female pipe of described Secondary Air is by secondary air bellow air distribution;
The female pipe of described Secondary Air is arranged in secondary air bellow, and is fixedly connected with described secondary air bellow by alignment pin.
8. device as claimed in claim 7, is characterized in that:
One end of the female pipe of the bottom of described attached wall overfire air port and described Secondary Air is hinged by bearing pin; One end of described bearing pin is spherical structure.
9. device as claimed in claim 1, is characterized in that:
Described executing agency also comprises: leading screw sleeve; Described leading screw sleeve is fixedly installed on described enclosure interior, and is socketed in the outside of described leading screw.
10. a pulverized-coal fired boiler, is characterized in that:
The unidirectional attached wall overfire air device of swing type that comprises the pulverized-coal fired boiler as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027828.1U CN203893216U (en) | 2014-01-17 | 2014-01-17 | Oscillating-type one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027828.1U CN203893216U (en) | 2014-01-17 | 2014-01-17 | Oscillating-type one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203893216U true CN203893216U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420027828.1U Expired - Lifetime CN203893216U (en) | 2014-01-17 | 2014-01-17 | Oscillating-type one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203893216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791832A (en) * | 2014-01-17 | 2015-07-22 | 烟台龙源电力技术股份有限公司 | Oscillating one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler |
-
2014
- 2014-01-17 CN CN201420027828.1U patent/CN203893216U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791832A (en) * | 2014-01-17 | 2015-07-22 | 烟台龙源电力技术股份有限公司 | Oscillating one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler |
| CN104791832B (en) * | 2014-01-17 | 2017-02-15 | 烟台龙源电力技术股份有限公司 | Oscillating one-way wall-attached secondary air device of pulverized coal fired boiler and pulverized coal fired boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |