CN201539875U - Integrated structure of thermal power plant furnace rear chimney flue and bracket - Google Patents
Integrated structure of thermal power plant furnace rear chimney flue and bracket Download PDFInfo
- Publication number
- CN201539875U CN201539875U CN2009200706762U CN200920070676U CN201539875U CN 201539875 U CN201539875 U CN 201539875U CN 2009200706762 U CN2009200706762 U CN 2009200706762U CN 200920070676 U CN200920070676 U CN 200920070676U CN 201539875 U CN201539875 U CN 201539875U
- Authority
- CN
- China
- Prior art keywords
- chimney
- flue
- power plant
- electric cleaner
- support
- 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
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model relates to an integrated structure of a thermal power plant furnace rear chimney flue and bracket, which comprises a chimney flue from an outlet of an air preheater to an inlet of an electric dust remover and a bracket thereof, a chimney flue of an outlet of the electric dust remover and a bracket thereof as well as a chimney inlet horizontal chimney flue and a bracket thereof, wherein the chimney flues are in square truss structure which is closed space structure formed by combining four pieces of plane truss and a lining steel plate; the chimney flues are respectively supported and connected by the brackets; and the connection ways of the chimney flues are fixed connection and more than two sliding connection. The structure adopts long-span structure arrangement, and a chimney flue body is taken as one part of the structure system, is taken as a truss girder and can bear various loads together with the brackets. The structure system is simple in arrangement, clear in load path and good in appearance effect. By fully utilizing the strength of the chimney flue body, the structure omits most of internal supporting rods of the chimney flues, thus reducing the flue gas resistance and lowering the maintenance cost caused by the corrosion of the internal supporting rods of the chimney flues. The product can save 25% of steel by comparison, and has remarkable effect.
Description
Technical field:
The utility model relates to the removing or the processing of a kind of combustion product or combustion residue; Flue is more specifically to a kind of thermal power plant stove rear pass and rack integral structure.
Background technology:
At present, along with the development of World Economics, big capacity unit such as 600MW, coal consumptions such as 1000MW are low, and unit capacity is discharged advantages such as low, and big capacity unit has become coal-burning power plant's development in future trend.And the steel use amount of the stove rear pass in big capacity unit thermal power plant is bigger, as the conventional thermal power plant of two 600MW units only stove rear pass itself use about 2500 tons of steel approximately, and the steel use amount of flue and support also is 2500 tons, and the steel use amount ratio of flue and support is about 1: 1.
In existing division of design, the flue body of stove rear pass system of power plant is usually by hot machine Specialty Design, the civil engineering specialty then is considered as the flue body equipment, design support according to load data and chimney support position that hot machine specialty provides, the two is in conjunction with the final design that just can finish stove rear pass system.The shortcoming of the existing stove rear pass of design is under this theory instructs: the structure of flue only consider vibration effect that flow of flue gas causes the impact of flue body and the rigidity that guarantees the flue body decide the steel plate thickness of flue body, anyhow to the specification of reinforcing rib and spacing etc., do not consider that it directly participates in the effect of opposing wind load, earthquake load directly as bearing carrier, consequently the material behavior of flue steel construction is not given full play to, and is a kind of potential waste.In the today of vigorously advocating innovation and development and sustainable development, stove rear pass system of power plant is carried out innovative design and optimal design work that positive effect is arranged beyond doubt.
The utility model content:
The purpose of this utility model provide at the prior art weak point a kind of structure more reasonable, can save great deal of steel, can bear the thermal power plant stove rear pass and the rack integral structure of flue gas pressures, dust load, wind load, earthquake load simultaneously.
The purpose of this utility model is to realize by following measure: a kind of thermal power plant stove rear pass and rack integral structure, it comprises that air preheater is exported to electric cleaner gas approach and support, electric cleaner exhaust pass and support, advance chimney horizontal flue and support, its special character is: described air preheater is exported to the electric cleaner gas approach, the electric cleaner exhaust pass, advancing the chimney horizontal flue is square truss structure, described square truss structure is combined into the enclosure space structure by four plate plane truss and lining steel plate, aforementioned electric deduster gas approach, the electric cleaner exhaust pass, advance the chimney horizontal flue and be connected with separately bracket supports, its syndeton is fixedly connected and at least more than one is slidingly connected.
The upper and lower chord member of described square truss structure is a H shaped steel, its horizontal reinforcement ribs is a channel-section steel, its longitudinal reinforcement rib is a unequal angle, and described upper and lower chord member and horizontal reinforcement ribs are connected with the lining steel plate full weld, and described longitudinal reinforcement rib and lining steel plate weld admittedly or be articulated and connected.
The spacing of described horizontal reinforcement ribs is in 1000～2200mm scope, and the longitudinal reinforcement rib spacing is in 400mm～600mm scope.
The top boom of described square truss structure, lower boom, horizontal reinforcement ribs, longitudinal reinforcement rib are rectangle hollow cross section square steel, aforementioned top boom, lower boom, horizontal reinforcement ribs, each member of longitudinal reinforcement rib and the welding of lining steel plate full weld.
Described electric cleaner gas approach, electric cleaner exhaust pass, advance being slidingly connected of chimney horizontal flue and support and be the sliding pair that partners of the limited impression on chimney support and the rack plate face, chimney support bottom surface and stent strut top board face all are fixed with polyfluortetraethylene plate.
Described electric cleaner gas approach, electric cleaner exhaust pass, advance the chimney horizontal flue and be provided with an expansion bellow at least.
Compared with prior art, owing to adopted thermal power plant stove rear pass and the rack integral structure that the utility model proposes, take longspan structure to arrange,, bear various loads jointly with support as girder truss with the part of flue body as structural system.The utility model is under the prerequisite that satisfies the flue function, and the flue body has made full use of the intensity of flue body again as the supporting member in the structural system; Cancel most flue internal overarm supports, flue gas resistance reduces, and power consumption reduces; The maintenance cost of being brought by the corrosion of flue internal overarm support reduces simultaneously.In addition, flue and supporting structure system are arranged simple and clear, the power transmission clear route, and appearance is better.Learn by contrast, concerning the stove rear pass system of above-mentioned power plant, the design's method can be saved steel material 25%, as with China 08 year operation 90000MW power plant, wherein 1/3 for the similar unit of 600MW calculates, and is about the unit of 50 600MW of the same type, saves 625 tons of calculating of steel with every unit, annual 31250 tons of the steel of approximately saving, effect is quite remarkable.
Description of drawings:
Fig. 1 is an embodiment floor map that the utility model proposes.
Fig. 2 is Fig. 1 embodiment truss structure stereogram.
Fig. 3 is Fig. 2 truss-like flue sectional view.
Fig. 4 is Fig. 1 embodiment sliding support schematic diagram.
Fig. 5 is the schematic diagram that Fig. 1 embodiment flue is installed expansion joint place and support connecting portion.
The specific embodiment:
Below in conjunction with accompanying drawing the specific embodiment is elaborated: in an embodiment floor map that the utility model proposes shown in Figure 1.A kind of thermal power plant stove rear pass and rack integral structure, it comprises: air preheater is exported to electric cleaner gas approach 1 and support, electric cleaner exhaust pass 2 and support, advances chimney horizontal flue 3 and support.Described air preheater is exported to electric cleaner 4 gas approach, electric cleaner exhaust pass, advances chimney 5 horizontal flues is square truss structure, as Fig. 2～shown in Figure 3.Described square truss structure is combined into the enclosure space structure by four plate plane truss 4 and lining steel plate 5.The top boom 41 of described square truss structure, lower boom 42 are H shaped steel, and its horizontal reinforcement ribs 43 is a channel-section steel, and its longitudinal reinforcement rib 44 is a unequal angle.Described upper and lower chord member and horizontal reinforcement ribs are connected with lining steel plate 5 full welds, and described longitudinal reinforcement rib and lining steel plate weld admittedly or be articulated and connected.The specification of chord member of truss and horizontal reinforcement ribs and longitudinal reinforcement rib is calculated definite according to the cross dimensions and the suffered load of flue, not only consider flue gas flow rate, negative pressure or normal pressure during calculating, also should consider the vibration effect that flow of flue gas is brought the impact of flue body, select the horizontal, vertical reinforcing rib of certain specification, determine the spacing of reinforcing rib; Because the flue body is also born load as the girder truss of structure, so the horizontal reinforcement ribs of flue is equivalent to the part of girder truss, need bear moment of flexure, axle power and shearing, horizontal reinforcement ribs need rigidly connect; And vertical reinforcing rib not only plays the effect of transmitting load as the supporting member of steel plate, also will guarantee not flexing unstability of steel plate, and vertical reinforcing rib mainly bears moment of flexure, but vertical reinforcing rib full weld also can adopt the mode that is articulated and connected.Usually the spacing of horizontal reinforcement ribs is in 1000～2200mm scope, and the longitudinal reinforcement rib spacing is in 400mm～600mm scope.The steel plate of flue body is mainly born flue gas pressures, wind load, dust load etc.At flue moment of torsion larger part, take pull bar to connect, reduce the flue torsional effect.Flue body (steel plate is anyhow to reinforcing rib) design simultaneously needs to satisfy the requirement of " thermal power plant cigarette wind pulverized coal channel designing technique rules " (DL/T 5121-2000).Square truss structure can also be taked following measure: the top boom of described square truss structure, lower boom, horizontal reinforcement ribs, longitudinal reinforcement rib are rectangle hollow cross section square steel, aforementioned each member and the welding of lining steel plate full weld.Under the situation that satisfies square truss structure intensity and rigidity, can also make other distortion or change.
Air preheater is exported to electric cleaner gas approach, electric cleaner exhaust pass, advance the chimney horizontal flue is connected by separately support 6 supportings, its syndeton be fixedly connected and at least more than one be slidingly connected 7.Flue and support adopt STAAD/CHINA or other steel construction analytical calculation software modelings to calculate as the total system.Take all factors into consideration flue and the load effect of support total system under various load cases, further optimize the horizontal, vertical reinforcing rib of flue support and flue cross section, reach and rationally utilize steel strength.Member in the total system will satisfy the requirement of the technical specification of civil engineering structure specialty simultaneously, and as " seismic design provision in building code " (GB50011-2001), " Code for design of steel structures " be the code for structural design such as grade (GB50017-2003).Described support can also can be single Pin gantry for having the groined type framework of bearing diagonal, also can be both mixed-arrangement, and those skilled in the art can reasonably select support and support span by LOAD FOR.Fig. 4 is Fig. 1 embodiment sliding support schematic diagram.Being slidingly connected of described flue and support 7 is chimney support 8 and limited impression 10 on the rack plate face 9 sliding pair that partners, and chimney support bottom surface and stent strut top board face all are fixed with polyfluortetraethylene plate 11.The design of sliding support has guaranteed flue, and chimney support 8 can be along sliding in the groove 10 on the support 6 top board faces 9 during expanded by heating under the effect of heat, chimney support bottom surface and stent strut top board face all are fixed with polyfluortetraethylene plate 11, the frictional force when such structure can reduce slippage.When flue slided into to a certain degree, bearing limited the motion of flue again, by this measure, guaranteed that flue and support become a structure and resist geological process or wind load jointly.
The utility model is considered the thermal expansion that brings from the high-temperature flue gas of boiler flue discharge, and therefore described each flue is provided with an expansion bellow at least, and Fig. 5 is the schematic diagram that flue is installed expansion joint 12 places and support connecting portion.Usually expansion bellow 12 is installed in flue segmentation place, be positioned at the top of support, the sliding pair that chimney support that the expansion joint two ends connect and support form freely stretches in limited impression 10, the flue body can be slided according to assigned direction under heat effect, and the displacement under every section flue calor innatus expands is as the foundation of selecting expansion joint.When the utility model uses in reality, also tackle every section flue body and be incubated, routine techniques is adopted in this insulation, is not described herein here.
The foregoing description is not purchased paired restriction of the present utility model, and all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.
Claims (6)
1. thermal power plant stove rear pass and rack integral structure, it comprises that air preheater is exported to electric cleaner gas approach and support, electric cleaner exhaust pass and support, advance chimney horizontal flue and support, it is characterized in that: described air preheater is exported to the electric cleaner gas approach, the electric cleaner exhaust pass, advancing the chimney horizontal flue is square truss structure, described square truss structure is combined into the enclosure space structure by four plate plane truss and lining steel plate, aforementioned electric deduster gas approach, the electric cleaner exhaust pass, advance the chimney horizontal flue and be connected, have at least more than one being connected to be slidingly connected during described bracket supports separately connects with separately bracket supports.
2. thermal power plant according to claim 1 stove rear pass and rack integral structure, the upper and lower chord member that it is characterized in that described square truss structure is a H shaped steel, its horizontal reinforcement ribs is a channel-section steel, its longitudinal reinforcement rib is a unequal angle, described upper and lower chord member and horizontal reinforcement ribs are connected with the lining steel plate full weld, and described longitudinal reinforcement rib and lining steel plate weld admittedly or be articulated and connected.
3. thermal power plant according to claim 2 stove rear pass and rack integral structure, the spacing that it is characterized in that described horizontal reinforcement ribs are in 1000～2200mm scope, and the longitudinal reinforcement rib spacing is in 400mm～600mm scope.
4. thermal power plant according to claim 1 stove rear pass and rack integral structure, the top boom, lower boom, horizontal reinforcement ribs, the longitudinal reinforcement rib that it is characterized in that described square truss structure are rectangle hollow cross section square steel, aforementioned top boom, lower boom, horizontal reinforcement ribs, each member of longitudinal reinforcement rib and the welding of lining steel plate full weld.
5. thermal power plant according to claim 1 and 2 stove rear pass and rack integral structure, it is characterized in that described electric cleaner gas approach, electric cleaner exhaust pass, advancing chimney horizontal flue and separately support sliding connection structure is limited impression on chimney support and the rack plate face sliding pair that partners, and chimney support bottom surface and stent strut top board face all are fixed with polyfluortetraethylene plate.
6. thermal power plant according to claim 1 and 2 stove rear pass and rack integral structure is characterized in that described electric cleaner gas approach, electric cleaner exhaust pass, advance the chimney horizontal flue and be provided with an expansion bellow at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200706762U CN201539875U (en) | 2009-04-17 | 2009-04-17 | Integrated structure of thermal power plant furnace rear chimney flue and bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200706762U CN201539875U (en) | 2009-04-17 | 2009-04-17 | Integrated structure of thermal power plant furnace rear chimney flue and bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539875U true CN201539875U (en) | 2010-08-04 |
Family
ID=42591328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200706762U Expired - Fee Related CN201539875U (en) | 2009-04-17 | 2009-04-17 | Integrated structure of thermal power plant furnace rear chimney flue and bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539875U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784560A (en) * | 2012-08-14 | 2012-11-21 | 中国大唐集团环境技术有限公司 | Novel truss-flue-type denitrification reactor |
| CN105910126A (en) * | 2016-06-24 | 2016-08-31 | 中国电力工程顾问集团华东电力设计院有限公司 | Supporting device for electrostatic dust collector and flue |
| CN107218616A (en) * | 2017-06-29 | 2017-09-29 | 西安西热锅炉环保工程有限公司 | A kind of circular cigarette ducting system of large span |
| CN107217816A (en) * | 2017-06-29 | 2017-09-29 | 西安西热锅炉环保工程有限公司 | One kind is without internal overarm support rectangle cigarette ducting system |
-
2009
- 2009-04-17 CN CN2009200706762U patent/CN201539875U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784560A (en) * | 2012-08-14 | 2012-11-21 | 中国大唐集团环境技术有限公司 | Novel truss-flue-type denitrification reactor |
| CN102784560B (en) * | 2012-08-14 | 2015-05-20 | 中国大唐集团环境技术有限公司 | Novel truss-flue-type denitrification reactor |
| CN105910126A (en) * | 2016-06-24 | 2016-08-31 | 中国电力工程顾问集团华东电力设计院有限公司 | Supporting device for electrostatic dust collector and flue |
| CN107218616A (en) * | 2017-06-29 | 2017-09-29 | 西安西热锅炉环保工程有限公司 | A kind of circular cigarette ducting system of large span |
| CN107217816A (en) * | 2017-06-29 | 2017-09-29 | 西安西热锅炉环保工程有限公司 | One kind is without internal overarm support rectangle cigarette ducting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201539875U (en) | Integrated structure of thermal power plant furnace rear chimney flue and bracket | |
| CN105351626A (en) | Novel supporting hanger system for heat primary air channel on outlet of thermal power plant air preheater | |
| CN102787650B (en) | Support with denitration steel structure | |
| CN102828630B (en) | Lateral bunker bay structure of large-scale thermal power plant | |
| CN202769632U (en) | A boiler support structure | |
| CN201662049U (en) | Serpentine tube bank supporting and hanging structure | |
| CN109736192B (en) | Screw-free pre-pressing type large-displacement deflection resistance multidirectional deflection comb-shaped plate bridge expansion device | |
| CN102359292A (en) | Truss type large plate girder system for tower type boiler | |
| CN204895590U (en) | Top cap middle cross beam structure and car | |
| CN211524308U (en) | Chimney outside device of encorbelmenting | |
| CN201059537Y (en) | Fluidized-bed boiler furnace screen type heating surface structure | |
| CN205859979U (en) | A kind of sliding bottom for the low low-level (stack-gas) economizer of power plant coal-burning boiler | |
| CN101619592A (en) | High and low bay connecting mode of workshop | |
| CN206669791U (en) | It is a kind of to be provided with the hot-flow flue for improving sectional shelf-unit | |
| CN102784560B (en) | Novel truss-flue-type denitrification reactor | |
| CN214835162U (en) | Steel frame and coal bunker bay steel frame combined structure of large power station boiler | |
| CN201293554Y (en) | Large-sized heating-furnace top straight wall steel structure | |
| CN203586532U (en) | Hot water and steam co-production boiler device | |
| CN211010143U (en) | TRT limiting auxiliary supporting device | |
| CN202324714U (en) | Truss type big-board beam system for tower boiler | |
| CN201662050U (en) | Serpentine tube bank suspension structure | |
| CN202170848U (en) | Rear frame of wind power generation unit | |
| CN208309811U (en) | A kind of connecting node of the replaceable active beam link of accentric support steel construction | |
| CN2911007Y (en) | Gate with double-arch structure | |
| CN202442327U (en) | Boiler top sealing device for circulating fluidized bed (CFB) boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20120417 |