CN107702084A - A kind of power plant's low-level (stack-gas) economizer - Google Patents
A kind of power plant's low-level (stack-gas) economizer Download PDFInfo
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- CN107702084A CN107702084A CN201711078683.2A CN201711078683A CN107702084A CN 107702084 A CN107702084 A CN 107702084A CN 201711078683 A CN201711078683 A CN 201711078683A CN 107702084 A CN107702084 A CN 107702084A
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- heat exchange
- heat
- heat exchanger
- exhaust
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
- F22D1/04—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having plain outer surfaces, e.g. in vertical arrangement
- F22D1/06—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having plain outer surfaces, e.g. in vertical arrangement in horizontal arrangement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of power plant's low-level (stack-gas) economizer, including flue and the heat exchange tube panel that is fixed in flue；The heat exchange tube panel is in cuboid, is provided with attached set of heat exchange tubes in the middle part of the upper center of the heat exchange tube panel and/or lower end, the attached set of heat exchange tubes includes the attached heat exchanger tube of more U-shapeds, and the both ends of the attached heat exchanger tube connect with adjacent heat exchanger tube.Pass through such design, by setting attached set of heat exchange tubes in the heat exchange tube panel top and bottom of cuboid, segment space originally in air inlet conic pipe joint and exhaust conic pipe joint can be used, improve heat exchange area, and then heat exchange efficiency and heat transfer effect are improved, it can further reduce energy consumption.
Description
Technical field
The present invention relates to a kind of power plant's low-level (stack-gas) economizer.
Background technology
In order to reduce exhaust gas temperature, flue gas loss is reduced, the performance driving economy of power plant is improved, is industrially commonly used
Install the low-level (stack-gas) economizer using lower temperature cooling medium additional on boiler back end ductwork.Existing low-level (stack-gas) economizer is all in rectangular
Shape, in the local flue of broadening, such structure is a kind of waste for the space up and down of flue link position,
It is unfavorable for raising heat and changes effect, prior art is badly in need of a kind of power plant's low-level (stack-gas) economizer for improving heat in flue and changing effect.
The content of the invention
It is an object of the invention to overcome defect present in prior art, there is provided heat changes effect in a kind of raising flue
Power plant's low-level (stack-gas) economizer.
To achieve the above object, the technical scheme is that providing a kind of power plant's low-level (stack-gas) economizer, including flue and
The heat exchange tube panel being fixed in flue, the flue include the inlet air stack set gradually along flow of flue gas direction, heat transfer flue
And exhaust uptake, the inlet air stack and exhaust uptake are connected by intake elbow with exhaust elbow with heat transfer flue respectively；Institute
State heat transfer flue caliber and pass through air inlet conic pipe joint respectively more than intake elbow and the caliber of exhaust elbow, the heat transfer flue
With the connection corresponding with intake elbow and exhaust elbow of exhaust conic pipe joint；The heat exchange tube panel is fixed by heat exchanger tube platen bracket
In heat transfer flue inwall, the heat exchange tube panel in a row bends roundabout set of heat exchange tubes into the both ends of more heat exchanger tubes are equal by more
Connected with entering supply mains and outfall sewer；It is described heat exchange tube panel be in cuboid, it is described exchange heat tube panel upper center and/or under
End middle part is provided with attached set of heat exchange tubes, and the attached set of heat exchange tubes includes the attached heat exchanger tube of more U-shapeds, the both ends of the attached heat exchanger tube
Connected with adjacent heat exchanger tube.
, can be with by setting attached set of heat exchange tubes in the heat exchange tube panel top and bottom of cuboid by such design
Segment space originally in air inlet conic pipe joint and exhaust conic pipe joint is used, improves heat exchange area, and then
Heat exchange efficiency and heat transfer effect are improved, can further reduce energy consumption.
As preferable, the attached heat exchanger tube of the upper center of the heat exchange tube panel is bent upwards, and is contained in exhaust conical pipe
Inside joint, the attached heat exchanger tube sets in a row and connected with the corresponding heat exchanger tube set in a row.Such design can incite somebody to action
Attached heat exchanger tube is preferably placed in inside exhaust conic pipe joint, and heat exchange area is improved when flue gas finally leaves flue, attached to change
Heat pipe is directly connected with heat exchanger tube so that installation and transformation are all easier, and can be transformed on existing economizer.
As preferable, the attached heat exchanger tube in the middle part of the lower end of the heat exchange tube panel is bent downwardly, and is contained in air inlet conical pipe
Inside joint, the attached heat exchanger tube sets in a row and connected with the corresponding heat exchanger tube set in a row.Such design can incite somebody to action
Attached heat exchanger tube is preferably placed in inside air inlet conic pipe joint, and heat exchange area, attached heat exchange are improved when flue gas has just enter into flue
Pipe is directly connected with heat exchanger tube so that installation and transformation are all easier, and can be transformed on existing economizer.
As preferable, H types fin or metal spiral fin are welded with the attached heat exchanger tube and heat exchange pipe outer wall.This
The design of sample can further improve heat transfer effect.
As preferable, the barostat of multiple variable volumes is evenly equipped with the outer wall of the exhaust conical pipe,
End opening inside exhaust conical pipe with connecting in other described adjusters, and link position sealed set.Such design can be with
The air pressure and flowing velocity in flue are adjusted by adjusting the volume of barostat, effect is changed to obtain best heat
Fruit.
As preferable, the barostat of multiple variable volumes is evenly equipped with the outer wall of the air inlet conical pipe,
End opening inside exhaust conical pipe with connecting in the barostat, and link position sealed set.Such design can be with
The air pressure and flowing velocity in flue are adjusted by adjusting the volume of barostat, effect is changed to obtain best heat
Fruit.And the barostat on the outer wall of air inlet conical pipe be able to can match somebody with somebody with the barostat being vented on the outer wall of conical pipe
Regulation is closed, further improves regulating effect.
As preferable, the barostat includes the first adjustment barrel, and the first adjustment barrel side wall is flexible ripple
Wall, the first regulation tube end plate middle part is connected with the first deformation cylinder, described with being vented on conical pipe and air inlet conical pipe
Provided with the opening being connected with barostat, head rod, the output of the first deformation cylinder are fixed with the opening
Boom end in the middle part of head rod with being connected.Such design can be driven by deforming cylinder, changed the volume of adjustment barrel, come
The air pressure in flue is adjusted, plays a part of adjusting flue gas wind speed.
As preferable, the barostat includes the second adjustment barrel, the company of sliding axially in second adjustment barrel
A sliding panel is connected to, the outer rim of the sliding panel is provided with sealing air ring, and the sealing air ring, which compresses, is arranged on sliding panel
Between outer rim and the second adjustment barrel inwall, the second deformation cylinder is connected with the middle part of the sliding panel, it is described to be vented conical pipe and enter
The opening being connected with barostat is equipped with gas conical pipe, the second connecting rod is fixed with the opening, described second becomes
The output boom end of shape cylinder in the middle part of the second connecting rod with being connected.Such design can be driven by deforming cylinder, changed and adjusted
The volume of cylinder is saved, to adjust the air pressure in flue, plays a part of adjusting flue gas wind speed.
As preferable, the second adjustment barrel bottom is further fixed on outer cover, and stomata, institute are provided with the outer cover
State and guide rod is additionally provided with sliding panel outer face, pilot hole is provided with the outer cover, the guide rod is slided with pilot hole
It is dynamic to be connected.It is more stable that such design make it that sliding panel slides.
The advantages of the present invention are：By such design, by the heat exchange tube panel of cuboid
End and lower end set attached set of heat exchange tubes, can be by the originally segment space in air inlet conic pipe joint and exhaust conic pipe joint
It is used, improves heat exchange area, and then improve heat exchange efficiency and heat transfer effect, can further reduces energy consumption.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is present invention heat exchange tube panel and attached heat exchanger tube mating connection schematic diagram；
Fig. 3 is the barostat structural representation of embodiment 2；
Fig. 4 is the barostat structural representation of embodiment 3.
In figure：1st, exchange heat tube panel；2nd, inlet air stack；3rd, intake elbow；4th, air inlet conic pipe joint；5th, heat transfer flue；6、
It is vented conic pipe joint；7th, exhaust elbow；8th, exhaust uptake；9th, heat exchanger tube；10th, supply mains is entered；11st, outfall sewer；12nd, it is attached to change
Heat pipe heat；13rd, attached heat exchanger tube；14th, barostat；15th, the first adjustment barrel；16th, flexible bellows wall；17th, the first deformation cylinder；
18th, head rod；19th, the second adjustment barrel；20th, sliding panel；21st, air ring is sealed；22nd, the second deformation cylinder；23rd, the second connection
Bar；24th, outer cover；25th, guide rod.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is further described.Following examples are only
For clearly illustrating technical scheme, and can not be limited the scope of the invention with this.
As shown in Figures 1 to 4, a kind of power plant's low-level (stack-gas) economizer, including flue and the heat exchange tube panel 1 that is fixed in flue,
The flue includes the inlet air stack 2 set gradually along flow of flue gas direction, heat transfer flue 5 and exhaust uptake 8, the air inlet cigarette
Road 2 and exhaust uptake 8 are connected by intake elbow 3 with exhaust elbow 7 with heat transfer flue 5 respectively；The caliber of heat transfer flue 5 is big
In intake elbow 3 and the caliber of exhaust elbow 7, the heat transfer flue 5 passes through air inlet conic pipe joint 4 and exhaust conical pipe respectively
The connection corresponding with intake elbow 3 and exhaust elbow 7 of joint 6；The heat exchange tube panel 1 is fixed on heat exchange by the support of tube panel 1 that exchanges heat
The inwall of flue 5, the heat exchange tube panel 1 in a row bend roundabout heat exchanger tube 9 by more and formed, the both ends of more heat exchanger tubes 9 with
Enter supply mains 10 to connect with outfall sewer 11；It is described heat exchange tube panel 1 be in cuboid, it is described heat exchange tube panel 1 upper center with/
Or it is provided with attached set of heat exchange tubes 12 in the middle part of lower end, the attached set of heat exchange tubes 12 includes the attached heat exchanger tube 13 of more U-shapeds, described attached to change
The both ends of heat pipe 13 connect with adjacent heat exchanger tube 9.
The attached heat exchanger tube 13 of the upper center of the heat exchange tube panel 1 is bent upwards, and is contained in exhaust conic pipe joint 6
Portion, the attached heat exchanger tube 13 set in a row and connected with the corresponding heat exchanger tube 9 set in a row.
Attached heat exchanger tube 13 in the middle part of the lower end of the heat exchange tube panel 1 is bent downwardly, and is contained in air inlet conic pipe joint 4
Portion, the attached heat exchanger tube 13 set in a row and connected with the corresponding heat exchanger tube 9 set in a row.
H types fin or metal spiral fin are welded with attached heat exchanger tube 13 and heat exchanger tube 9 outer wall.
The barostat 14 of multiple variable volumes, other described tune are evenly equipped with the outer wall of the exhaust conical pipe
End opening inside exhaust conical pipe with connecting in section device, and link position sealed set.
The barostat 14 of multiple variable volumes is evenly equipped with the outer wall of the air inlet conical pipe, the air pressure is adjusted
End opening inside exhaust conical pipe with connecting in section device 14, and link position sealed set.
The barostat 14 includes the first adjustment barrel 15, and the side wall of the first adjustment barrel 15 is flexible bellows wall 16,
The first deformation cylinder 17 is connected with the middle part of the bottom plate of first adjustment barrel 15, it is described with being vented on conical pipe and air inlet conical pipe
Provided with the opening being connected with barostat 14, head rod 18, the first deformation cylinder 17 are fixed with the opening
The middle part of output boom end and head rod 18 be connected.
The barostat 14 includes the second adjustment barrel 19, and the interior edge of the second adjustment barrel 19 has been in axial sliding connection one
Individual sliding panel 20, the outer rim of the sliding panel 20 are provided with sealing air ring 21, and the sealing air ring 21, which compresses, is arranged on sliding panel
Between 20 outer rim and the inwall of the second adjustment barrel 19, the middle part of sliding panel 20 is connected with the second deformation cylinder 22, the exhaust
The opening being connected with barostat 14 is equipped with conical pipe and air inlet conical pipe, the second connecting rod is fixed with the opening
23, the output boom end of the second deformation cylinder 22 is connected with the middle part of the second connecting rod 23.
The bottom of second adjustment barrel 19 is further fixed on outer cover 24, and stomata, the cunning are provided with the outer cover 24
Guide rod 25 is additionally provided with the dynamic outer face of plate 20, pilot hole is provided with the outer cover 24, the guide rod 25 is with being oriented to
Hole is slidably connected.
Embodiment 1
A kind of power plant's low-level (stack-gas) economizer, including flue and the heat exchange tube panel 1 that is fixed in flue, the flue are included along cigarette
The inlet air stack 2 that flow of air direction is set gradually, heat transfer flue 5 and exhaust uptake 8, the inlet air stack 2 and exhaust uptake 8 divide
Do not connected by intake elbow 3 with exhaust elbow 7 with heat transfer flue 5；The caliber of heat transfer flue 5 is more than intake elbow 3 and row
The caliber of gas bend pipe 7, the heat transfer flue 5 pass through air inlet conic pipe joint 4 and exhaust conic pipe joint 6 and intake elbow respectively
3 and exhaust elbow 7 is corresponding connects；The heat exchange tube panel 1 is fixed on the inwall of heat transfer flue 5 by the support of tube panel 1 that exchanges heat, described to change
Heat pipe screen 1 in a row bends roundabout heat exchanger tube 9 by more and formed, and the both ends of more heat exchanger tubes 9 are with entering supply mains 10 and water outlet
House steward 11 connects；The heat exchange tube panel 1 is in cuboid, is provided with the middle part of the upper center of the heat exchange tube panel 1 and/or lower end
Attached set of heat exchange tubes 12, the attached set of heat exchange tubes 12 include the attached heat exchanger tube 13 of more U-shapeds, the both ends of the attached heat exchanger tube 13 and phase
Adjacent heat exchanger tube 9 connects.
The attached heat exchanger tube 13 of the upper center of the heat exchange tube panel 1 is bent upwards, and is contained in exhaust conic pipe joint 6
Portion, the attached heat exchanger tube 13 set in a row and connected with the corresponding heat exchanger tube 9 set in a row.
Attached heat exchanger tube 13 in the middle part of the lower end of the heat exchange tube panel 1 is bent downwardly, and is contained in air inlet conic pipe joint 4
Portion, the attached heat exchanger tube 13 set in a row and connected with the corresponding heat exchanger tube 9 set in a row.
H types fin or metal spiral fin are welded with attached heat exchanger tube 13 and heat exchanger tube 9 outer wall.
When in use, flue gas is from inlet air stack 2, intake elbow 3, air inlet conic pipe joint 4, heat transfer flue 5 and exhaust cone
Shape pipe joint 6, exhaust elbow 7, the flowing of the direction of exhaust uptake 8, the heat exchange tube panel 1 pass through the tube panel 1 that exchanges heat in cuboid
Frame is fixed on the inwall of heat transfer flue 5；When flue gas flows through heat exchange tube panel 1 heat is carried out with the cryogenic media (condensate) in heat exchanger tube 9
Change, condensate absorbs smoke exhaust heat in heat exchange tube panel 1, reduces exhaust gas temperature, itself is heated, returns again to vapour after rise temperature
Turbine low-pressure heater system, instead of the effect of part low-pressure heater.In the case where generated energy is constant, unit can be saved
Energy consumption.Simultaneously as the cigarette temperature into desulfurizing tower declines, the consumption of sulfur removal technology water can also be saved.In order to further carry
High heat exchange area, attached set of heat exchange tubes 12 is provided with the middle part of the upper center of heat exchange tube panel 1 and lower end, attached set of heat exchange tubes 12 includes
The attached heat exchanger tube 13 of more U-shapeds, the both ends of the attached heat exchanger tube 13 connect with adjacent heat exchanger tube 9.
Attached heat exchanger tube 13 is contained in inside the inside of exhaust conic pipe joint 6 and air inlet conic pipe joint 4, by former vacant sky
Between utilized, improve heat exchange area, improve heat transfer effect, because attached heat exchanger tube 13 connects with adjacent heat exchanger tube 9, medium from
Heat exchanger tube 9 flows back to heat exchanger tube 9 again after flowing through attached heat exchanger tube 13, so more convenient to existing scrap build.
Embodiment 2
Further optimization to embodiment 1, multiple variable volumes are evenly equipped with the outer wall of the exhaust conical pipe
Barostat 14, end opening inside exhaust conical pipe with connecting in other described adjusters, and link position sealed set.
The barostat 14 of multiple variable volumes is evenly equipped with the outer wall of the air inlet conical pipe, the air pressure is adjusted
End opening inside exhaust conical pipe with connecting in section device 14, and link position sealed set.
The barostat 14 includes the first adjustment barrel 15, and the side wall of the first adjustment barrel 15 is flexible bellows wall 16,
The first deformation cylinder 17 is connected with the middle part of the bottom plate of first adjustment barrel 15, it is described with being vented on conical pipe and air inlet conical pipe
Provided with the opening being connected with barostat 14, head rod 18, the first deformation cylinder 17 are fixed with the opening
The middle part of output boom end and head rod 18 be connected.
It is stable in the draught head in the state of ideal in heat transfer flue 5, the flow velocity of flue gas also levels off to constant, heat exchange
Velocity of medium in pipe 9 and attached heat exchanger tube 13 is stable, and only rational flue gas flow rate coordinates certain velocity of medium can be only achieved
Best heat changes effect.But when in use, the air pressure that flue gas enters heat transfer flue 5 can change, if air pressure is too high, heat is also
Do not have enough time exchanging and just discharged from exhaust uptake 8, air pressure is too low, and it is too low that heat changes efficiency, and medium flows through but not predetermined without raising
Temperature.In the application, multiple barostats 14 will be set on exhaust conical pipe and air inlet conical pipe, in the air pressure of heat transfer flue 5
It is too high, when flue gas flow rate is too fast, the progressively minimum cylinder volume of barostat 14 that is vented on conical pipe, the air pressure on air inlet conical pipe
Adjuster 14 progressively expands volume so that is temporarily produced in heat transfer flue 5 and offsets air-flow, lower velocity of flue gas, control heat is changed
Effect.
Conversely, when flue gas flow rate is too slow, the barostat 14 being vented on conical pipe progressively expands volume, air inlet conical pipe
On the progressively minimum cylinder volume of barostat 14 so that temporarily produced in heat transfer flue 5 and promote air-flow, improve velocity of flue gas,
Control heat changes effect.
The volume enlargement of appeal or the mechanism of diminution realize that flexible bellows wall 16 has by barostat 14
Compression and the design feature opened, preferably polytetrafluoroethylene bellows, by adjustment barrel when the first deformation cylinder 17 take-off lever stretches out
Bottom plate is separated with head rod 18, and flexible bellows wall 16 is opened so that the volume increase in adjustment barrel；Opposite volume reduces.
Embodiment 3
Further optimization to embodiment 1, multiple variable volumes are evenly equipped with the outer wall of the exhaust conical pipe
Barostat 14, end opening inside exhaust conical pipe with connecting in other described adjusters, and link position sealed set.
The barostat 14 of multiple variable volumes is evenly equipped with the outer wall of the air inlet conical pipe, the air pressure is adjusted
End opening inside exhaust conical pipe with connecting in section device 14, and link position sealed set.
The barostat 14 includes the second adjustment barrel 19, and the interior edge of the second adjustment barrel 19 has been in axial sliding connection one
Individual sliding panel 20, the outer rim of the sliding panel 20 are provided with sealing air ring 21, and the sealing air ring 21, which compresses, is arranged on sliding panel
Between 20 outer rim and the inwall of the second adjustment barrel 19, the middle part of sliding panel 20 is connected with the second deformation cylinder 22, the exhaust
The opening being connected with barostat 14 is equipped with conical pipe and air inlet conical pipe, the second connecting rod is fixed with the opening
23, the output boom end of the second deformation cylinder 22 is connected with the middle part of the second connecting rod 23.
The bottom of second adjustment barrel 19 is further fixed on outer cover 24, and stomata, the cunning are provided with the outer cover 24
Guide rod 25 is additionally provided with the dynamic outer face of plate 20, pilot hole is provided with the outer cover 24, the guide rod 25 is with being oriented to
Hole is slidably connected.
It is stable in the draught head in the state of ideal in heat transfer flue 5, the flow velocity of flue gas also levels off to constant, heat exchange
Velocity of medium in pipe 9 and attached heat exchanger tube 13 is stable, and only rational flue gas flow rate coordinates certain velocity of medium can be only achieved
Best heat changes effect.But when in use, the air pressure that flue gas enters heat transfer flue 5 can change, if air pressure is too high, heat is also
Do not have enough time exchanging and just discharged from exhaust uptake 8, air pressure is too low, and it is too low that heat changes efficiency, and medium flows through but not predetermined without raising
Temperature.In the application, multiple barostats 14 will be set on exhaust conical pipe and air inlet conical pipe, in the air pressure of heat transfer flue 5
It is too high, when flue gas flow rate is too fast, the progressively minimum cylinder volume of barostat 14 that is vented on conical pipe, the air pressure on air inlet conical pipe
Adjuster 14 progressively expands volume so that is temporarily produced in heat transfer flue 5 and offsets air-flow, lower velocity of flue gas, control heat is changed
Effect.
Conversely, when flue gas flow rate is too slow, the barostat 14 being vented on conical pipe progressively expands volume, air inlet conical pipe
On the progressively minimum cylinder volume of barostat 14 so that temporarily produced in heat transfer flue 5 and promote air-flow, improve velocity of flue gas,
Control heat changes effect.
The volume enlargement of appeal or the mechanism of diminution realize that sliding panel 20 and second is adjusted by barostat 14
The cavity of a variable volume is formd between section cylinder 19, by sliding panel 20 and second when the second deformation cylinder 22 take-off lever stretches out
Connecting rod 23 separates, and cavity volume becomes big, and opposite volume reduces.Sealing air ring 21 ensure that sealing effectiveness, sealing air ring 21 with
Lubricating oil is coated between second adjustment barrel 19, guide rod 25 plays guide effect so that slide more stable.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, the front lower of the technology of the present invention principle is not being departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
- A kind of 1. power plant's low-level (stack-gas) economizer, it is characterised in that：Including flue and the heat exchange tube panel being fixed in flue, the flue Including the inlet air stack set gradually along flow of flue gas direction, heat transfer flue and exhaust uptake, the inlet air stack and exhaust cigarette Road is connected by intake elbow with exhaust elbow with heat transfer flue respectively；The heat transfer flue caliber is more than intake elbow and exhaust The caliber of bend pipe, the heat transfer flue pass through air inlet conic pipe joint and exhaust conic pipe joint and intake elbow and exhaust respectively Bend pipe is corresponding to be connected；The heat exchange tube panel is fixed on heat transfer flue inwall by heat exchanger tube platen bracket, and the heat exchange tube panel is by more Root in a row bends roundabout set of heat exchange tubes into the both ends of more heat exchanger tubes connect with entering supply mains and outfall sewer；It is described to change Heat pipe screen is in cuboid, and attached set of heat exchange tubes is provided with the middle part of the upper center of the heat exchange tube panel and/or lower end, described attached to change Heat pipe heat includes the attached heat exchanger tube of more U-shapeds, and the both ends of the attached heat exchanger tube connect with adjacent heat exchanger tube.
- 2. power plant's low-level (stack-gas) economizer as claimed in claim 1, it is characterised in that：The attached of upper center of the heat exchange tube panel is changed Heat pipe is bent upwards, and is contained in inside exhaust conic pipe joint, and the attached heat exchanger tube sets in a row and set in a row with corresponding Heat exchanger tube connection.
- 3. power plant's low-level (stack-gas) economizer as claimed in claim 2, it is characterised in that：Attached changing in the middle part of the lower end of the heat exchange tube panel Heat pipe is bent downwardly, and is contained in inside air inlet conic pipe joint, and the attached heat exchanger tube sets in a row and set in a row with corresponding Heat exchanger tube connection.
- 4. power plant's low-level (stack-gas) economizer as claimed in claim 3, it is characterised in that：On the attached heat exchanger tube and heat exchange pipe outer wall It is welded with H types fin or metal spiral fin.
- 5. power plant's low-level (stack-gas) economizer as claimed in claim 4, it is characterised in that：On the outer wall of the exhaust conical pipe The barostat of multiple variable volumes is furnished with, end opening inside exhaust conical pipe with connecting in other described adjusters, and connects Connect position seals setting.
- 6. power plant's low-level (stack-gas) economizer as claimed in claim 5, it is characterised in that：On the outer wall of the air inlet conical pipe The barostat of multiple variable volumes is furnished with, end opening inside exhaust conical pipe with connecting in the barostat, and connects Connect position seals setting.
- 7. power plant's low-level (stack-gas) economizer as claimed in claim 6, it is characterised in that：The barostat includes the first regulation Cylinder, the first adjustment barrel side wall are flexible bellows wall, and the first deformation cylinder, institute are connected with the middle part of the first regulation tube end plate State and be equipped with the opening being connected with barostat with exhaust conical pipe and air inlet conical pipe, first is fixed with the opening Connecting rod, the output boom end of the first deformation cylinder in the middle part of head rod with being connected.
- 8. power plant's low-level (stack-gas) economizer as claimed in claim 6, it is characterised in that：The barostat includes the second regulation Cylinder, the second adjustment barrel interior edge have been in axial sliding connection a sliding panel, and the outer rim of the sliding panel is provided with sealing air ring, The sealing air ring, which compresses, to be arranged between the outer rim of sliding panel and the second adjustment barrel inwall, and the is connected with the middle part of the sliding panel Two deformation cylinders, described be vented on conical pipe and air inlet conical pipe are equipped with the opening being connected with barostat, the opening On be fixed with the second connecting rod, the output boom end of the second deformation cylinder is connected with the second connecting rod middle part.
- 9. power plant as claimed in claim 8 low-level (stack-gas) economizer, it is characterised in that：The second adjustment barrel bottom is further fixed on outer Lid, stomata is provided with the outer cover, guide rod is additionally provided with the sliding panel outer face, is set in the outer cover There is pilot hole, the guide rod is slidably connected with pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078683.2A CN107702084B (en) | 2017-11-06 | 2017-11-06 | Low-temperature economizer of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078683.2A CN107702084B (en) | 2017-11-06 | 2017-11-06 | Low-temperature economizer of power plant |
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| Publication Number | Publication Date |
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| CN107702084A true CN107702084A (en) | 2018-02-16 |
| CN107702084B CN107702084B (en) | 2022-12-20 |
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| CN201711078683.2A Active CN107702084B (en) | 2017-11-06 | 2017-11-06 | Low-temperature economizer of power plant |
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| CN203869018U (en) * | 2014-05-28 | 2014-10-08 | 江苏釜鼎能源科技有限公司 | Heat pipe type low-temperature flue gas waste heat recovery device for coal-fired power plant |
| CN104976607A (en) * | 2015-06-17 | 2015-10-14 | 大唐(北京)能源管理有限公司 | Boiler smoke-exhaustion waste heat recycling system additionally provided with heat exchange elements |
| CN106369585A (en) * | 2016-08-28 | 2017-02-01 | 桂林市晶准测控技术有限公司 | Energy-saving low-temperature economizer |
| CN106918239A (en) * | 2015-12-24 | 2017-07-04 | 德阳市益友冶金设备制造有限公司 | A kind of intermittent high temperature fume processing device |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203869018U (en) * | 2014-05-28 | 2014-10-08 | 江苏釜鼎能源科技有限公司 | Heat pipe type low-temperature flue gas waste heat recovery device for coal-fired power plant |
| CN104976607A (en) * | 2015-06-17 | 2015-10-14 | 大唐(北京)能源管理有限公司 | Boiler smoke-exhaustion waste heat recycling system additionally provided with heat exchange elements |
| CN106918239A (en) * | 2015-12-24 | 2017-07-04 | 德阳市益友冶金设备制造有限公司 | A kind of intermittent high temperature fume processing device |
| CN106369585A (en) * | 2016-08-28 | 2017-02-01 | 桂林市晶准测控技术有限公司 | Energy-saving low-temperature economizer |
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