CN207501179U - A kind of power plant's neat stress reheat system - Google Patents

A kind of power plant's neat stress reheat system Download PDF

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Publication number
CN207501179U
CN207501179U CN201721462837.3U CN201721462837U CN207501179U CN 207501179 U CN207501179 U CN 207501179U CN 201721462837 U CN201721462837 U CN 201721462837U CN 207501179 U CN207501179 U CN 207501179U
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China
Prior art keywords
flue
flue gas
heat exchange
heat
heat exchanger
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Withdrawn - After Issue
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CN201721462837.3U
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Chinese (zh)
Inventor
黄岳军
陈金龙
赵文涛
李俊
赵虎
糜晓航
谭梦磊
谭海江
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JIANGYIN DNT HEAVY SCIENCE & TECHNOLOGY Co Ltd
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JIANGYIN DNT HEAVY SCIENCE & TECHNOLOGY Co Ltd
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Priority to CN201721462837.3U priority Critical patent/CN207501179U/en
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Abstract

The utility model discloses a kind of power plant's neat stress reheat system, including flue and the heat exchange tube panel being fixed in flue;Flue gas even distribution screen is provided in air inlet conic pipe joint, the flue gas even distribution screen includes the circular frame being fixed in air inlet conic pipe joint, multiple propeller fans are evenly equipped in the frame, the intake and exhaust direction of the propeller fan is identical with flow of flue gas direction in air inlet conic pipe joint.By using reheat system described herein, before neat stress with heat exchange tube panel heat exchange, first pass through flue gas even distribution screen and neat stress is distributed in entire heat transfer flue, uniformly come into full contact with heat exchange tube panel, improve heat transfer effect, save the energy.

Description

A kind of power plant's neat stress reheat system
Technical field
The utility model is related to a kind of power plant's neat stress reheat systems.
Background technology
Power plant's temperature is finally being discharged in order to improve flue gas, generally neat stress reheat machine can be installed in last flue, Hot gas in boiler or hot water are introduced in flue and reheat the de- over cure discharged from absorption tower with the neat stress for taking off nitre, It is then exhausted from after reaching exhaust temperature.Existing neat stress cannot be averagely after entering flue from absorption tower dispersion, cause and reheating The heat exchange area of device is uneven, and heat transfer effect is bad.The prior art is badly in need of a kind of electricity that can be improved heat transfer effect, save the energy Factory's neat stress reheat system.
Utility model content
The purpose of the utility model is to overcome defect in the prior art, provide it is a kind of can improve heat transfer effect, Save power plant's neat stress reheat system of the energy.
To achieve the above object, there is provided a kind of power plant's neat stress reheat system, packets for the technical solution of the utility model Flue and the heat exchange tube panel being fixed in flue are included, the flue includes 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 pass through intake elbow and exhaust elbow and heat transfer flue respectively Connection;The heat transfer flue caliber is more than the caliber of intake elbow and exhaust elbow, and the heat transfer flue passes through inlet cone respectively Shape pipe fitting and exhaust conic pipe joint are correspondingly connected with intake elbow and exhaust elbow;The heat exchange tube panel passes through the tube panel that exchanges heat Stent is fixed on heat transfer flue inner wall, and the heat exchange tube panel is by the set of heat exchange tubes of more bending detours in a row into more heat exchanger tubes Both ends connected with entering supply mains and outfall sewer;Flue gas even distribution screen, the cigarette are provided in the air inlet conic pipe joint Gas uniformly shields the circular frame including being fixed in air inlet conic pipe joint, and multiple propeller fans are evenly equipped in the frame, The intake and exhaust direction of the propeller fan is identical with flow of flue gas direction in air inlet conic pipe joint.
By using reheat system described herein, before neat stress with heat exchange tube panel heat exchange, it is equal to first pass through flue gas Neat stress is distributed in entire heat transfer flue by cloth screen, is uniformly come into full contact with heat exchange tube panel, is improved heat transfer effect, saves energy Source.
As preference, the flue gas even distribution screen is provided with two-stage along the flow direction of flue gas, including first order flue gas Uniformly distributed screen and second level flue gas even distribution screen, the first order flue gas even distribution screen dimensions are less than second level flue gas even distribution screen dimensions.This The design of sample can be evenly distributed with by uniformly distributed further break up neat stress of two-stage.
As preference, the heat exchange tube panel, in cuboid, the lower end middle part of the heat exchange tube panel is provided with attached heat exchange Pipe group, the attached set of heat exchange tubes include 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 It is logical;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 inside exhaust conic pipe joint, described attached to change Heat pipe sets in a row and is connected with the corresponding heat exchanger tube set in a row.
Attached heat exchanger tube can be preferably placed in inside exhaust conic pipe joint by such design, by the sky of original idle Between be used, heat exchange area is improved when flue gas has just enter into flue, attached heat exchanger tube is directly connected with heat exchanger tube so that installation and Transformation is all easier, and can be transformed in existing equipment.
As preference, it is welded with metal spiral fin in the attached heat exchanger tube and heat exchange pipe outer wall.Such design Heat transfer effect can be further improved.
As preference, auxiliary heating flue is communicated between the inlet air stack and exhaust elbow, the auxiliary heating Vertical electric heating tube is provided in flue, the electric heating tube convex outer surfaces are provided with interior heating convex surface, and the auxiliary adds External heat convex surface is provided on heating flue inner wall, the external heat convex surface is staggered with interior heating convex surface, and the interior heating is convex The flue gas channel of bending is formed between face and external heat convex surface.Such design, can by assist heating flue with it is net Flue gas carries out auxiliary heating, further improves the efficiency of heating surface.The flue gas of bending is formed between interior heating convex surface and external heat convex surface Heating channel can cause neat stress comes into full contact with heating source to exchange heat, improve heat transfer effect.
As preference, the flue surfaces are fixed with solar film battery, the solar film battery and electric power storage Pond charging connection, the accumulator is with electric heating tube for being electrically connected;The photovoltaic film spiral of the solar film battery is fixed There are gaps between flue surfaces, the photovoltaic film;The flue surfaces are fixed with fixed strip, and the photovoltaic film is fixed On fixed strip surface.Such design can be generated heat by Driven by Solar Energy electric heating tube, reduce the heat exchange pressure in heat transfer flue Power further saves the energy.
As preference, thermal insulation cotton layer is provided between the photovoltaic film and fixed strip.Such design can be with Photovoltaic film is avoided to be heated.
The advantages of the utility model and advantageous effect are:By using reheat system described herein, in neat stress Before heat exchange tube panel heat exchange, first pass through flue gas even distribution screen and neat stress is distributed in entire heat transfer flue, it is equal with heat exchange tube panel Even comes into full contact with, and improves heat transfer effect, saves the energy.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is structure enlargement diagram at A in Fig. 1;
Fig. 3 is heat exchanger tube and attached heat exchanger tube attachment structure schematic diagram;
Fig. 4 is auxiliary heating flue internal structure schematic diagram;
Fig. 5 is solar energy film and flue attachment structure schematic diagram;
Fig. 6 is gap distribution schematic diagram (omitting fixed strip).
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;12nd, attached set of heat exchange tubes;13rd, attached heat exchanger tube;14th, circle Shape frame;15th, propeller fan;16th, first order flue gas even distribution screen;17th, second level flue gas even distribution screen;18th, auxiliary heating cigarette Road;19th, electric heating tube;20th, interior heating convex surface;21st, external heat convex surface;22nd, solar energy film;23rd, gap;24th, fixed strip; 25th, thermal insulation cotton layer.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below Example is only used for clearly illustrating the technical solution of the utility model, and the protection model of the utility model cannot be limited with this It encloses.
As shown in Figures 1 to 6, a kind of power plant's neat stress reheat system, including flue and the heat exchanger tube being fixed in flue Screen 1, the flue include the inlet air stack 2 that is set gradually along flow of flue gas direction, heat transfer flue 5 and exhaust uptake 8, it is described into Gas flue 2 and exhaust uptake 8 are connected respectively by intake elbow 3 with exhaust elbow 7 with heat transfer flue 5;The heat transfer flue 5 is managed Diameter is more than the caliber of intake elbow 3 and exhaust elbow 7, and the heat transfer flue 5 passes through air inlet conic pipe joint 4 and exhaust cone respectively Shape pipe fitting 6 is correspondingly connected with intake elbow 3 and exhaust elbow 7;The heat exchange tube panel 1 is fixed on by 1 stent of tube panel that exchanges heat 5 inner wall of heat transfer flue, the heat exchanger tube 9 that the heat exchange tube panel 1 in a row bends detour by more form, the both ends of more heat exchanger tubes 9 Connected with entering supply mains and outfall sewer;Flue gas even distribution screen, the flue gas even distribution are provided in the air inlet conic pipe joint 4 Screen includes the circular frame 14 being fixed in air inlet conic pipe joint 4, and multiple propeller fans 15, institute are evenly equipped in the frame The intake and exhaust direction for stating propeller fan 15 is identical with flow of flue gas direction in air inlet conic pipe joint 4.
The flue gas even distribution screen is provided with two-stage along the flow direction of flue gas, including first order flue gas even distribution screen 16 and Secondary smoke uniformly shields 17, and 16 size of first order flue gas even distribution screen is less than 17 size of second level flue gas even distribution screen.
The heat exchange tube panel 1 is provided with attached set of heat exchange tubes 12, institute in cuboid, the lower end middle part of the heat exchange tube panel 1 The attached heat exchanger tube 13 that attached set of heat exchange tubes 12 includes more U-shapeds is stated, both ends and the adjacent heat exchanger tube 9 of the attached heat exchanger tube 13 connect It is logical;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 inside exhaust conic pipe joint 6, described Attached heat exchanger tube 13 sets in a row and is connected with the corresponding heat exchanger tube 9 set in a row.
Metal spiral fin is welded on 9 outer wall of the attached heat exchanger tube 13 and heat exchanger tube.
Auxiliary heating flue 18 is communicated between the inlet air stack 2 and exhaust elbow 7, it is described to assist in heating flue 18 Vertical electric heating tube 19 is provided with, 19 convex outer surfaces of electric heating tube are provided with interior heating convex surface 20, and the auxiliary adds External heat convex surface 21 is provided on 18 inner wall of heating flue, the external heat convex surface 21 is staggered with interior heating convex surface 20, described The flue gas channel of bending is formed between interior heating convex surface 20 and external heat convex surface 21.
The flue surfaces are fixed with 22 battery of solar energy film, and 22 battery of solar energy film connects with accumulator charging It connects, the accumulator is with electric heating tube 19 for being electrically connected;The photovoltaic film spiral of 22 battery of solar energy film is fixed on cigarette Road surface, there are gaps 23 between the photovoltaic film;The flue surfaces are fixed with fixed strip 24, and the photovoltaic film is fixed On 24 surface of fixed strip.
Thermal insulation cotton layer 25 is provided between the photovoltaic film and fixed strip 24.
Embodiment 1
A kind of power plant's neat stress reheat system, including flue and the heat exchange tube panel 1 being fixed in flue, the flue packet Include the inlet air stack 2 set gradually along flow of flue gas direction, heat transfer flue 5 and exhaust uptake 8, the inlet air stack 2 and exhaust Flue 8 is connected respectively by intake elbow 3 with exhaust elbow 7 with heat transfer flue 5;It is curved that 5 caliber of heat transfer flue is more than air inlet The caliber of pipe 3 and exhaust elbow 7, the heat transfer flue 5 respectively by air inlet conic pipe joint 4 and exhaust conic pipe joint 6 and Intake elbow 3 and exhaust elbow 7 are correspondingly connected with;The heat exchange tube panel 1 is fixed on by 1 stent of tube panel that exchanges heat in heat transfer flue 5 Wall, the heat exchanger tube 9 that the heat exchange tube panel 1 in a row bends detour by more form, and the both ends of more heat exchanger tubes 9 are with entering supply mains It is connected with outfall sewer;Flue gas even distribution screen is provided in the air inlet conic pipe joint 4, the flue gas even distribution screen includes being fixed on Circular frame 14 in air inlet conic pipe joint 4 is evenly equipped with multiple propeller fans 15, the propeller fan in the frame 15 intake and exhaust direction is identical with flow of flue gas direction in air inlet conic pipe joint 4.
The flue gas even distribution screen is provided with two-stage along the flow direction of flue gas, including first order flue gas even distribution screen 16 and Secondary smoke uniformly shields 17, and 16 size of first order flue gas even distribution screen is less than 17 size of second level flue gas even distribution screen.The first order The structure of flue gas even distribution screen 16 and second level flue gas even distribution screen 17 is the circular frame being fixed in air inlet conic pipe joint 4 14, multiple propeller fans 15, intake and exhaust direction and the air inlet conical pipe of the propeller fan 15 are evenly equipped in the frame Flow of flue gas direction is identical in connector 4.
When in use, neat stress enters heat transfer flue 5 from inlet air stack 2, intake elbow 3, air inlet conic pipe joint 4, by It is disorderly and unsystematic to be flowed in flue in neat stress, and airflow distribution is simultaneously uneven, passes through neat stress and first order flue gas even distribution Propeller fan 15 on screen 16 and second level flue gas even distribution screen 17 is contacted and is broken up again by propeller fan 15 so that net The air flow method of flue gas is uniform, with the 1 uniform contact heat-exchanging of tube panel that exchanges heat, can improve heat transfer effect.
Embodiment 2
To advanced optimizing for embodiment 1, the heat exchange tube panel 1 is in cuboid, the lower end middle part of the heat exchange tube panel 1 Attached set of heat exchange tubes 12 is provided with, the attached set of heat exchange tubes 12 includes the attached heat exchanger tube 13 of more U-shapeds, the attached heat exchanger tube 13 Both ends are connected with adjacent heat exchanger tube 9;Attached heat exchanger tube 13 in the middle part of the lower end of the heat exchange tube panel 1 is bent downwardly, the row of being contained in Inside gas conic pipe joint 6, the attached heat exchanger tube 13 sets in a row and is connected with the corresponding heat exchanger tube 9 set in a row.
Metal spiral fin is welded on 9 outer wall of the attached heat exchanger tube 13 and heat exchanger tube.
When in use, neat stress is with heat exchange tube panel 1 other than exchanging heat, also with attached changing inside exhaust conic pipe joint 6 Heat pipe heat 12 exchanges heat, and increases heat exchange area in this way, and the heat for improving the unit interval changes efficiency.Since attached heat exchanger tube 13 is in a row set It puts and is connected with the corresponding heat exchanger tube 9 set in a row, is also relatively easy to so being transformed in existing equipment.
Embodiment 3
Auxiliary heating flue 18 is communicated between the inlet air stack 2 and exhaust elbow 7, it is described to assist in heating flue 18 Vertical electric heating tube 19 is provided with, 19 convex outer surfaces of electric heating tube are provided with interior heating convex surface 20, and the auxiliary adds External heat convex surface 21 is provided on 18 inner wall of heating flue, the external heat convex surface 21 is staggered with interior heating convex surface 20, described The flue gas channel of bending is formed between interior heating convex surface 20 and external heat convex surface 21.
The flue surfaces are fixed with 22 battery of solar energy film, and 22 battery of solar energy film connects with accumulator charging It connects, the accumulator is with electric heating tube 19 for being electrically connected;The photovoltaic film spiral of 22 battery of solar energy film is fixed on cigarette Road surface, there are gaps 23 between the photovoltaic film;The flue surfaces are fixed with fixed strip 24, and the photovoltaic film is fixed On 24 surface of fixed strip.
Thermal insulation cotton layer 25 is provided between the photovoltaic film and fixed strip 24.
When in use, flue surfaces are fixed with 22 battery of solar energy film, and flue herein refers to that open air can be by too The flue that sunlight arrives, can be by the photovoltaic film spiral shell of hull cell because these flue surfaces are usually in idle state It is rotated with and is scheduled on flue surfaces and generates electricity, charge to accumulator, then the electricity supply electric heating tube 19 of accumulator generates heat again, it can To be generated heat by Driven by Solar Energy electric heating tube 19, the heat exchange pressure in heat transfer flue 5 is reduced, further saves the energy.
The photovoltaic film spiral of 22 battery of solar energy film is fixed on flue surfaces, between the photovoltaic film there are Gap 23 can so that the heat of flue surfaces is discharged by gap 23, and fixed strip 24 has certain height with flue surfaces Difference, heat are distributed between the gap and gap of fixed strip 24 and flue surfaces 23.The design of thermal insulation cotton layer 25 is also to be Further protection photovoltaic film.
Interior heating convex surface 20 (copper material) is directly heated and external heat convex surface 21 after 19 heating power of electric heating tube (copper material) indirectly heat, the flue gas channel of bending is formed between interior heating convex surface 20 and external heat convex surface 21 to be made Neat stress comes into full contact with heating source and exchanges heat, raising heat transfer effect.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the technical principle of the utility model, several improvements and modifications can also be made, these improvement The scope of protection of the utility model is also should be regarded as with retouching.

Claims (7)

1. a kind of power plant's neat stress reheat system, it is characterised in that:It is described including flue and the heat exchange tube panel being fixed in flue Flue includes the inlet air stack set gradually along flow of flue gas direction, heat transfer flue and exhaust uptake, the inlet air stack and row Gas flue is connected respectively by intake elbow with exhaust elbow with heat transfer flue;The heat transfer flue caliber be more than intake elbow with The caliber of exhaust elbow, the heat transfer flue respectively by air inlet conic pipe joint and exhaust conic pipe joint and intake elbow and Exhaust elbow is correspondingly connected with;The heat exchange tube panel is fixed on heat transfer flue inner wall, the heat exchange tube panel by heat exchanger tube platen bracket The set of heat exchange tubes of detour is in a row bent into the both ends of more heat exchanger tubes are connected with entering supply mains and outfall sewer by more;Institute It states and flue gas even distribution screen is provided in air inlet conic pipe joint, the flue gas even distribution screen includes being fixed in air inlet conic pipe joint Circular frame is evenly equipped with multiple propeller fans, intake and exhaust direction and the air inlet taper of the propeller fan in the frame Flow of flue gas direction is identical in pipe fitting.
2. power plant's neat stress reheat system as described in claim 1, it is characterised in that:The flue gas even distribution screen is along flue gas Flow direction is provided with two-stage, including first order flue gas even distribution screen and second level flue gas even distribution screen, the first order flue gas even distribution Screen dimensions are less than second level flue gas even distribution screen dimensions.
3. power plant's neat stress reheat system as claimed in claim 2, it is characterised in that:The heat exchange tube panel is in cuboid, Attached set of heat exchange tubes is provided in the middle part of the lower end of the heat exchange tube panel, the attached set of heat exchange tubes includes the attached heat exchanger tube of more U-shapeds, institute The both ends for stating attached heat exchanger tube are connected with adjacent heat exchanger tube;Attached heat exchanger tube in the middle part of the lower end of the heat exchange tube panel is bent downwardly, It is contained in inside exhaust conic pipe joint, the attached heat exchanger tube sets in a row and connected with the corresponding heat exchanger tube set in a row.
4. power plant's neat stress reheat system as claimed in claim 3, it is characterised in that:The attached heat exchanger tube and heat exchange pipe outer wall On be welded with metal spiral fin.
5. power plant's neat stress reheat system as claimed in claim 4, it is characterised in that:The inlet air stack and exhaust elbow it Between be communicated with auxiliary heating flue, be provided with vertical electric heating tube, the electric heating tube appearance in the auxiliary heating flue Face protrusion is provided with interior heating convex surface, and external heat convex surface, the external heat convex surface are provided on the auxiliary heating flue inner wall It is staggered with interior heating convex surface, the flue gas channel of bending is formed between the interior heating convex surface and external heat convex surface.
6. power plant's neat stress reheat system as claimed in claim 5, it is characterised in that:The flue surfaces are fixed with solar energy Hull cell, the solar film battery and accumulator charging connection, the accumulator is with electric heating tube for being electrically connected;It is described The photovoltaic film spiral of solar film battery is fixed on flue surfaces, and there are gaps between the photovoltaic film;The flue Surface is fixed with fixed strip, and the photovoltaic film is fixed on fixed strip surface.
7. power plant's neat stress reheat system as claimed in claim 6, it is characterised in that:Between the photovoltaic film and fixed strip It is provided with thermal insulation cotton layer.
CN201721462837.3U 2017-11-06 2017-11-06 A kind of power plant's neat stress reheat system Withdrawn - After Issue CN207501179U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721462837.3U CN207501179U (en) 2017-11-06 2017-11-06 A kind of power plant's neat stress reheat system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721462837.3U CN207501179U (en) 2017-11-06 2017-11-06 A kind of power plant's neat stress reheat system

Publications (1)

Publication Number Publication Date
CN207501179U true CN207501179U (en) 2018-06-15

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CN201721462837.3U Withdrawn - After Issue CN207501179U (en) 2017-11-06 2017-11-06 A kind of power plant's neat stress reheat system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107726345A (en) * 2017-11-06 2018-02-23 江阴德耐特重工科技有限公司 A kind of power plant's neat stress reheat system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107726345A (en) * 2017-11-06 2018-02-23 江阴德耐特重工科技有限公司 A kind of power plant's neat stress reheat system
CN107726345B (en) * 2017-11-06 2023-11-24 江阴德耐特重工科技有限公司 Clean flue gas reheat system of power plant

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