CN2374754Y - Isolating screen overheat device of power station boiler - Google Patents
Isolating screen overheat device of power station boiler Download PDFInfo
- Publication number
- CN2374754Y CN2374754Y CN 99226485 CN99226485U CN2374754Y CN 2374754 Y CN2374754 Y CN 2374754Y CN 99226485 CN99226485 CN 99226485 CN 99226485 U CN99226485 U CN 99226485U CN 2374754 Y CN2374754 Y CN 2374754Y
- Authority
- CN
- China
- Prior art keywords
- side wall
- shield sheet
- station boiler
- pendant superheater
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to an isolating screen overheat device of a power station boiler, which is installed between the left and the right both side walls of the inlet of a horizontal flue and near the outlet of a hearth of a four corner tangential coal fired power station boiler. The overheat device is composed of a plurality of isolating screen pieces which are arranged orderly from left to right or from right to left, and each isolating screen piece is composed of a plurality of circular pipes which are bent and become in a pipe screen. The inlet end and the outlet end of the pipe screen are respectively communicated with an inlet connecting box and an outlet connecting box. When fumes from the outlet of the hearth are designed in counter-clockwise rotation, the isolating screen pieces all adopt a offset mode inclined towards the left side wall. When the fumes from the outlet of the hearth are designed in clockwise rotation, the isolating screen pieces all adopt a offset mode inclined towards the right side wall, and the offset angle is 15 DEG to 75 DEG with the both side walls.
Description
The utility model relates to a kind of superheater of coal-fired power station boiler, specifically belongs to a kind of division pendant superheater that is used for four jiaos of tangential coal-fired power station boilers.
Division pendant superheater in general four jiaos of tangential coal-fired power station boilers is the porch that is placed in furnace outlet, horizontal flue, and wherein, tactic minute shield sheet generally is to adopt the arrangement that is parallel to left and right sides wall direction in the division pendant superheater.As shown in Figure 1, be to be to be rotated counterclockwise to be the common arrangement of the branch shield sheet 2 of the division pendant superheater of example with present station boiler gas stream in the stove.Wherein, the branch shield sheet of superheater is two rows, and every row divides the shield sheet to comprise that polylith tube panel formula divides shield sheet 2, is to arrange in the mode parallel with stove left and right sides wall, and order is arranged between the left and right side wall 1,4.
Such boiler is owing to adopt that chain type is caught fire, the rotary combustion mode, and have the efficiency of combustion height, coal adapts to advantages such as wide, still has residual rotation but the high-temperature flue gas that circular spiral rises in the stove moves to the furnace outlet place.Owing to divide the shield piece collection this conventional arrangement, can't eliminate the heating power inequality of flue gas in the advection flue that forms by residual rotation, thereby, caused excessive thermal deviation will cause the overtemperature and the booster of high temperature convection superheater and reheater, have a strong impact on the safety and economy operation of unit.Simultaneously, along with the increase of unit capacity, the air-flow heating power deviation in the convection pass is constantly aggravated, and also can seriously limit unit to high parameter, big capacity development.
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of offset division pendant superheater that is used for four jiaos of tangential coal-fired power station boilers is provided, and it can effectively solve the problem of air-flow heating power inequality in the boiler horizontal gas pass.
The purpose of this utility model is achieved in that a kind of station boiler division pendant superheater, be installed in the furnace outlet of contiguous four jiaos of tangential coal-fired power station boilers, between the left and right sides wall of horizontal flue inlet, described division pendant superheater is made up of from left to right some or tactic from right to left minute shield sheets, wherein each branch shield sheet is to become tube panel by curved the putting of many pipes, advancing of described tube panel, the port of export is communicated with an inlet header and an outlet header respectively, be characterized in: when described furnace outlet flue gas was designed to be rotated counterclockwise, described minute shield sheet all adopted the bias mode of side wall inclination left; When furnace outlet flue gas is designed to turn clockwise, the bias mode that described minute shield sheet then adopts side wall to the right to tilt, with the angle of eccentricity of both walls be 15-75 °.
Above-mentioned station boiler division pendant superheater, wherein, described each divide shield sheet all with side wall biasing at 45.
Above-mentioned station boiler division pendant superheater, wherein, described minute shield sheet is set to be from left to right or from right-to-left with the angle of eccentricity of described side wall and increases progressively the compound mode biasing.
Above-mentioned station boiler division pendant superheater, wherein, the shield sheet was four in described minute, each sheet from a side wall angle of eccentricity to another side wall according to the biasing of 0 °, 30 °, 45 °, 60 ° sequential combination.
The utility model is owing to the direction of rotation according to primary air in four jiaos of tangential boiler furnaces, the branch shield sheet that is arranged in the furnace outlet place is carried out the combined bias of certain angle, significantly eliminate by the air-flow heating power biasing that is used for making in the horizontal flue of racemization and water conservancy diversion.Adopt the heating power deviation of air-flow in the tangential firing station boiler flue of the present utility model can cut down more than 75%, this promotes the economy and the safe operation of unit to have important engineering significance for overtemperature that prevents the high temperature convection heating surface and booster.Provide strong assurance for the tangential firing station boiler to high parameter, big capacity development simultaneously.
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the arrangement schematic diagram that divides the shield sheet in the prior art division pendant superheater;
Fig. 2 is the branch shield sheet bias mode structural representation of the utility model first embodiment;
Fig. 3 is the branch shield sheet bias mode structural representation of the utility model second embodiment;
Fig. 4 is the branch shield sheet bias mode structural representation of the utility model the 3rd embodiment;
Fig. 5 is the structure for amplifying schematic diagram of a branch shield sheet among Fig. 1-4;
Fig. 6 is the arrangement schematic diagram of the utility model in boiler.
In the accompanying drawing, 1 is the left side wall of quadrangle tangential circle boiler, and 2 is a branch shield sheet in the division pendant superheater, 3 is the front wall of boiler, and 4 is the right-side wall of boiler, and 5 for dividing the circular pipe of shield sheet 2,6 for dividing the inlet header of shield sheet 2, and 7 for dividing the outlet header of shield sheet 2.
Fig. 1 shows the arrangement that divides the shield sheet in the prior art division pendant superheater emphatically, and promptly dividing shield sheet 2 is to arrange in the mode parallel with stove left and right sides wall.
Simultaneously referring to Fig. 5, it is the enlarged diagram of a branch shield sheet 2 in the division pendant superheater among Fig. 1-4, from Fig. 2 as seen, the branch shield sheet 2 of pendant superheater is to form a tube panel by 5 bendings of many pipes, the import and export end of tube panel is communicated with inlet steam header 4 and outlet steam header 5 respectively
Fig. 2 is the structural representation of first embodiment of the present utility model, and every row divides being set to from right-side wall 4 side wall 1 biasing left of shield sheet 2, and the angle α that forms with left and right sides side wall is 45 °.Promptly dividing the shield sheet can be set to the direction parallel with left and right sides wall and become 15-75 ° angle, wherein, is best with the 45.
Fig. 3 is the structural representation of second embodiment of the present utility model, and it is four that every row divides shield sheet 2, and 4 adopt and to increase progressively the angle of eccentricity mode and arrange from left side wall 1 to right-side wall, promptly are respectively 0 °, 30 °, 45 °, 60 ° compound mode biasing in regular turn.
More than, the arrangement of superheater is under the prerequisite of the original screen sheet separation pitch of maintenance for the biasing that divides shield sheet 2.
Fig. 4 is the structural representation of the 3rd embodiment of the present utility model, divide shield sheet angle of eccentricity arranges except under keep dividing the constant condition of spacing between the shield sheet 2, adopting, also can adopt the spacing that to divide shield sheet 2 to be contracted under the 25-75% situation of former spacing, carry out combined bias, make all branch shield sheets 2 and left and right sides wall 1,4 one-tenth 15-75 ° angle.Wherein, as shown in Figure 4, be to be benchmark with the right-side wall, from right-side wall 4 side wall 1 arrangement left, divide the spacing between the shield sheet 2 to be contracted to 50% of former distance four branch shield sheets 2, all divide the angle of shield sheet 2 with 45 ° of left and right sides wall 1,4 biasings.In addition, dwindling under the spacer conditions of dividing between the shield sheet 2, shield sheet 2 can take order to increase progressively the compound mode layout of angle of eccentricity equally in a plurality of minutes.
Above embodiment is example with furnace outlet flue gas when being rotated counterclockwise all, the bias mode that divides shield sheet 2 all to adopt side wall 1 left to tilt; As furnace outlet flue gas when turning clockwise, the bias modes that divide 2 of shield sheets to adopt side wall 4 to the right to tilt.When a minute shield sheet 2 dwindles spacing when arranging, then be to be benchmark with the left side wall, from left side wall 1 to the right side wall 4 arrange.
The utility model divides shield piece collection bias mode, can play racemization and guide functions, thereby air-flow heating power deviation in the elimination of level flue greatly wherein, arranges that to increase progressively the angle of eccentricity mode effect is better especially.The utility model not only effect is remarkable, and transforms conveniently, thereby is with a wide range of applications.
Claims (4)
1. station boiler division pendant superheater, be installed between the left and right sides wall of furnace outlet, horizontal flue inlet of contiguous four jiaos of tangential coal-fired power station boilers, described division pendant superheater is made up of from left to right some or tactic from right to left minute shield sheets, wherein each branch shield sheet is to become tube panel by curved the putting of many pipes, the import and export end of described tube panel is communicated with an inlet header and an outlet header respectively, it is characterized in that:
When described furnace outlet flue gas was designed to be rotated counterclockwise, described minute shield sheet all adopted the bias mode of side wall inclination left; When furnace outlet flue gas is designed to turn clockwise, the bias mode that described minute shield sheet then adopts side wall to the right to tilt, with the angle of eccentricity of both walls be 15-75 °.
2. station boiler division pendant superheater according to claim 1 is characterized in that: described each divide shield sheet all with side wall biasing at 45.
3. station boiler division pendant superheater according to claim 1 is characterized in that: described minute shield sheet is set to be from left to right or from right-to-left with the angle of eccentricity of described side wall and increases progressively the compound mode biasing.
4. station boiler division pendant superheater according to claim 3 is characterized in that: the shield sheet was four in described minute, each sheet from a side wall angle of eccentricity to another side wall according to the biasing of 0 °, 30 °, 45 °, 60 ° sequential combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99226485 CN2374754Y (en) | 1999-04-30 | 1999-04-30 | Isolating screen overheat device of power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99226485 CN2374754Y (en) | 1999-04-30 | 1999-04-30 | Isolating screen overheat device of power station boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2374754Y true CN2374754Y (en) | 2000-04-19 |
Family
ID=34016171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99226485 Expired - Fee Related CN2374754Y (en) | 1999-04-30 | 1999-04-30 | Isolating screen overheat device of power station boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2374754Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230415A (en) * | 2018-10-08 | 2019-01-18 | 广州达意隆包装机械股份有限公司 | A kind of overturning star gear clamp and transmission line vertically |
| CN112594665A (en) * | 2020-12-17 | 2021-04-02 | 上海康恒环境股份有限公司 | Flow disturbing device of waste heat boiler |
| CN113124394A (en) * | 2021-04-06 | 2021-07-16 | 苏州西热节能环保技术有限公司 | Method for adjusting flue gas temperature of superheater inlet flue of waste heat boiler |
-
1999
- 1999-04-30 CN CN 99226485 patent/CN2374754Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230415A (en) * | 2018-10-08 | 2019-01-18 | 广州达意隆包装机械股份有限公司 | A kind of overturning star gear clamp and transmission line vertically |
| CN109230415B (en) * | 2018-10-08 | 2024-02-09 | 广州达意隆包装机械股份有限公司 | Vertical overturning star wheel clamp and conveying line |
| CN112594665A (en) * | 2020-12-17 | 2021-04-02 | 上海康恒环境股份有限公司 | Flow disturbing device of waste heat boiler |
| CN113124394A (en) * | 2021-04-06 | 2021-07-16 | 苏州西热节能环保技术有限公司 | Method for adjusting flue gas temperature of superheater inlet flue of waste heat boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104896482A (en) | Smoke circulating combusting system for waste palm boiler | |
| CN2374754Y (en) | Isolating screen overheat device of power station boiler | |
| CN204717692U (en) | A kind of palm waste boiler smoke circulating combustion system | |
| CN219607046U (en) | Two-section type asymmetric high-temperature heating surface structure | |
| CN111396857A (en) | Pulverized coal fired boiler capable of preventing convection heating surface from being contaminated and slagging | |
| CN202733916U (en) | Burning dregs fluidized bed boiler | |
| CN201636834U (en) | Calcium carbide afterheat boiler | |
| CN212132406U (en) | Pulverized coal fired boiler capable of preventing convection heating surface from being contaminated and slagging | |
| CN109084319B (en) | Flue gas recirculation system adopting two stages for heat exchange | |
| CN215863433U (en) | Inlet flue gas flow equalizing device of waste incineration exhaust-heat boiler economizer | |
| CN205480967U (en) | Combustor gas recirculation boiler structure | |
| CN210088911U (en) | Device for preheating air by using boiler flue gas | |
| CN205279031U (en) | Dangerous for waste incineration exhaust -heat boiler who can be used to electricity generation | |
| CN217635643U (en) | Hearth structure of solid waste incineration boiler | |
| CN212719663U (en) | High-efficient ash deposition-free biomass furnace | |
| CN203687352U (en) | Energy-saving environment-friendly boiler barrel longitudinally-arranged inclined push reciprocating grate hot water boiler | |
| CN110285401B (en) | Pure combustion furfural residue CFB boiler | |
| CN111720810B (en) | Fluidized bed incinerator grading cooling module | |
| CN212841531U (en) | Fast-assembling type biomass-fired heating furnace | |
| CN2526682Y (en) | Energy-saving environmental protection layered burning boiler | |
| CN202109510U (en) | Built-in cyclone dust collector for boiler | |
| CN210165563U (en) | Novel pulverized coal fired boiler | |
| CN213746826U (en) | Novel biomass gasification gas boiler | |
| CN202915328U (en) | Vertical smokeless combustion steam boiler | |
| CN103017183B (en) | A kind of for burning containing the ash block tube bundle of the more residual oil injection boiler of silt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |