CN208901635U - A kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation - Google Patents
A kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation Download PDFInfo
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- CN208901635U CN208901635U CN201821448978.4U CN201821448978U CN208901635U CN 208901635 U CN208901635 U CN 208901635U CN 201821448978 U CN201821448978 U CN 201821448978U CN 208901635 U CN208901635 U CN 208901635U
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Abstract
The utility model discloses a kind of cast aluminium silicon magnesium gas and hot water furnace structures of pneumoelectric coupling limit condensation, including multiple modularization recuperative furnace pieces, multiple modularization recuperative furnace pieces and plate heat exchanger are connected by pipeline and heat pump forms heating loop, and pipeline connection is controlled by valve group；Needle wing is staggered in arrangement using height in modularization recuperative furnace piece, is the fin of multiple section combination of shapes；Subcooled boiling is avoided to lead to heat transfer deterioration phenomenon using radiation area branch canal structure；Effectively tearing condensing heat-exchange area needle wing and wall surface liquid film heat and mass transfer enhancement performance are designed using three-dimensional structure needle wing, groove, water conservancy diversion rib and condensing heat-exchange area bluff body raised structures；The tetrahedron protrusion effectively tearing wall surface liquid film in condensing heat-exchange area simultaneously increases heat transfer area, and the external waviness processing in heat convection area increases heat exchange area and improves the coefficient of heat transfer；Whole heating system uses pneumoelectric coupled mode, counts in senior staff officer, return water, and high-load condition limit inferior condensation flue gas sufficiently recycles latent heat and guarantees that system time possesses the highest thermal efficiency.
Description
Technical field
The utility model, which belongs to, improves energy utilization efficiency, energy-saving and environment-friendly heat exchange field of heat exchangers, and in particular to one
The cast aluminium silicon magnesium gas and hot water furnace structure of kind pneumoelectric coupling limit condensation.
Background technique
In recent years, haze problem continues, takes place frequently, and haze phenomenon is even more serious between northern heating season.To administer haze, defendance
Blue sky, central heating industry proposes " northern area winter cleaning heating planning 2017-2021 ", wherein cleaning heating rate in 2019
50% replaces dissipating 0.74 hundred million tons of coal of burning, increases 13,100,000,000 m of gas newly3；Cleaning heating rate 70% in 2021, which replaces dissipating, burns 1.5 hundred million tons of coal, newly
Increase 27,800,000,000 m of gas3；Heating Natural Gas Demand in 2021 is up to 64,100,000,000 m3With first-class many requirements.To reach planning requirement, using quotient
Industry gas heating stove is essential as systems of distributed heating systems mode, and commercial combustion gas heating stove is to be transformed into the chemical energy of natural gas
Thermal energy realizes the supply terminal of heating, is being preferably selected for systems of distributed heating systems.Its technological core is by heat source, environment, building
The flue gas that natural gas carries out after Ultra Low-oxygen, ultralow nitrogen, Ultra-High Efficiency burning is carried out the compact heat exchange of ultra high efficiency by energy saving of system theory
And exhaust gas temperature is reduced to aqueous dew point temperature hereinafter, realizing the emission reduction of system depth dynamic energy-saving.Commercial gas on sale at present
Water heater for heating has been carried out NOxDischarge is less than 30mg, while boiler efficiency is adopted generally 96% or more using commercial gas
Warm heat water furnace heating is a kind of mode of extremely clean and effective.Possess Ultra Low-oxygen, ultralow nitrogen, superelevation efficiency of combustion, ultra high efficiency to change
Heat, superstructure is compact and the advantages such as the superelevation thermal efficiency indicate commercial gas water heater for heating and contain extremely huge market needs
It asks and development prospect.
Commercial gas water heater for heating mainly uses cast iron module heat exchanger, soldering stainless steel heat exchange of heat pipe, cast aluminium silicon magnesium
Alloy module heat exchanger and full copper pipe heat exchanger form.Cast aluminium Si-Mg alloy is not lower like eutectic cast iron thermal coefficient, more backhauls
The design and volume of big flue gas resistance heaviness aobvious greatly, the characteristics such as whole frozen-free are also low without welded stainless steel pipe thermal coefficient
And the double action after welding in condensed water active ion and welding residual stress can occur stress corrosion cracking (SCC) etc. and ask
Topic, also high more than thermal coefficient full copper pipe is cheap for price.Cast aluminium Si-Mg alloy commercial gas water heater for heating is using casting
Modularization condensing heat exchanger can be effectively prevented from welding procedure use, have both easy for installation, be easy to overhaul, flexible design etc. is a variety of
Advantage.Especially Cl-When ion concentration is less than 100mg/L, cast aluminium Si-Mg alloy has preferable resistance to corrosion, cast aluminium silicon magnesium
Alloy thermal coefficient is higher, is 8 times of stainless steel, and condensing heat exchanger is very compact, significantly improves cooling energy recovery, greatly
Ground mitigates weight of equipment.It is huge that these advantages obtain cast aluminium silicon magnesium commercial gas water heater for heating in cleaning experience with reforming heating
The market share.
But it is lower negative that commercial gas water heater for heating publicity on sale at present, which reaches higher than 108% Ultra-High Efficiency,
It is measured when heat exchanger fully absorbs thermal energy in flue gas under lotus (less than 20%), but commercial gas water heater for heating is all varying duty fortune
Row, as the thermal efficiency of the raisings commercial gas water heater for heating of load gradually decreases, simultaneously for have it is higher be discharged (80
DEG C), return water (60 DEG C) temperature when, the thermal efficiency of commercial gas water heater for heating is all more low (~96%).According to statistics, it fires
Gas heating consumes the 17% of China's natural gas total amount every year, carries out depth energy saving according to this patent, high load capacity is overcome seldom to dive
The defect of heat utilization, if all realizing, the limit cooling of flue gas can save about 5,000,000,000 m of natural gas every year3, reduce PM2.5 discharge 4672
Ton reduces NOx33340 tons of discharge saves natural gas direct economic benefit up to 15,000,000,000 yuan.Commercial gas water heater for heating simultaneously
Still there are problems in structure design, cast aluminium silicon magnesium recuperative furnace piece typical first usually has decline channel structure, such as
Patent WO 2015/024712, the WO2016/055392A1 of the famous cast aluminium Gui Mei condensing heat exchanger company shellfish Hans Kalt of Holland
Subcooled boiling easily occur Deng, the structure leads to heat transfer deterioration and generates noise since bubble squeezes and even destroy heat exchanger structure etc.
Bad phenomenon, secondly because most of commercial gas-heating water heater is extremely low in the condensation latent heat uptake of heating season, so that furnace
Piece uses single circular cross-section needle fin structure, and in the ultra high efficiency cast aluminium silicon magnesium gas-heating using heat pump auxiliary deep condensation
The needle fin structure of condensing heat-exchange section needs to make corresponding adjustment in furnace system, effectively tears the condensate film on wall surface and needle wing
To ensure the high heat and mass transfer performance of furnace piece.
Summary of the invention
In order to solve above-mentioned commercial gas water heater for heating as the raising thermal efficiency of load reduces, senior staff officer is counted
The problem of the few heat of water, return water temperature Latent heat yield, and strengthen the heat transfer of heat exchanger, mass transfer ability, make full use of day
The combustion heat heating of right gas, while solving heat transfer caused by subcooled boiling caused by commercial gas water heater for heating decline water channel and disliking
Change phenomenon.The utility model provides a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation.
The utility model is achieved by the following technical programs:
A kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation, including multiple modularization recuperative furnace pieces 1,
Multiple modularization recuperative furnace pieces 1, which are connected, by pipeline 2 forms heating loop, the connection of pipeline 2 with plate heat exchanger 3 and heat pump 4
It is controlled by water return pipeline branch, 4 cold end of heat pump and the cold end and the valve group 5 of hot end intersection that are located at plate heat exchanger 3；
The modularization recuperative furnace piece 1 include inlet and outlet fluid interface 11, fixed ear 12 and be located at modularization recuperative furnace piece 1
There is water conservancy diversion rib 14 in the radiation heat affected zone tail portion in the molding sand hole 13 on side, modularization recuperative furnace piece 1, and modularization recuperative furnace piece 1 is right
It arranges combination needle wing 15 on stream heat-transfer surface by rule, 1 side of modularization recuperative furnace piece is provided with 16 modularization recuperative furnace of cleaning door
Include top water channel 171 and lower part water channel 172 inside piece 1.
The heat exchange area of the modularization recuperative furnace piece 1 is non-to save material and guaranteeing structural strength with a thickness of 5~7mm
The design wall thickness of heat transfer zone is 8~30mm.
The inlet and outlet fluid interface 11 to connecting pipe 2, using with 1 end face of modularization recuperative furnace piece or boss
Design, it is that 2~4mm diameter is sealed than the inlet and outlet 10~15mm big groove of fluid interface 11 to place that top, which is provided with depth,
Circle, inlet and outlet 11 upper and lower of fluid interface are provided with threaded hole and guarantee that modularization recuperative furnace piece 1 and pipeline 2 are tight to connect bolt
Close connection prevents cold refrigerant leakage.
The water conservancy diversion rib 14 be arranged in modularization recuperative furnace piece 1 radiate heat affected zone tail portion, for improve the coefficient of heat transfer and
Diversion function etc. wing heights and section it is semicircle in class, by the regularly arranged longitudinal fin of certain spacing.
The combination needle wing 15 is the combined fin of multiple section shape, uses a uniform row or two rows for one group
The design of height stagger arrangement needle wing, can be effectively prevented smoke corridor phenomenon, and combination needle wing 15 is radiated in modularization recuperative furnace piece 1
Rounded with the section on convection heating surface transition face, height is lower and distribution is sparse, as flue-gas temperature, amount of radiation reduce,
The height of needle wing also steps up, and needle wing height degree reaches maximum and density highest on convection heating surface of the smoke temperature lower than 500 DEG C,
Ribs vertical connecting structure can be used, effective booster injection fin structure intensity reduces draft difficulty and increases heat convection area
And play flue gas guide functions；Reach 65 DEG C of condensing heat-exchange regions below using diamond shape needle fin structure in smoke temperature, or uses water chestnut
Shape needle wing forms " positive eight word " type structure plus diagonal rib, and section can also be used and present semicircle lower half diamond shape and with short transverse
The shorter three-dimensional structure needle wing of diamond length, this structure can guarantee enough heat exchange areas and effectively tear condensed water liquid film
Make condensate liquid in the groove that needle wing flows to that 1 wall surface of modularization recuperative furnace piece is provided with, the condensation of reinforced module recuperative furnace piece 1 is changed
The heat and mass transfer performance of hot arc, combine needle wing 15 height and stagger arrangement spacing and assembled arrangement distribution calculated according to simulation and real
Specific determination is tested, the condensing heat-exchange area of modularization recuperative furnace piece 1 is using triangular right-angle triangle, isosceles triangle or rectangle
The design of bluff body protrusion, which forms front and back side liquid film jet stream to the strong commutation of condensate film, strongly to red needle wing and wall surface
Liquid film is torn with heat and mass transfer enhancement performance.
The cleaning door 16 is provided with the side opposite with inlet and outlet fluid interface 11, includes entire smoke convection and concentrates
Area effectively avoids needing in Heating Season integrally sealing off the furnace piece being sealed when deashing, close using matched sealing cover
Envelope prevents smoke spillage.
The lower part water channel 172 is 2 tube sides, is in rectangular section, flow area is with a thickness of there is 20~30mm, to flow
Logical to be discharged from 4 cold end of heat pump, fully absorbing condensation latent heat in 1 condensing heat-exchange area flue gas of modularization recuperative furnace piece makes system effectiveness
Moment maximizes；The top water channel 171 is 4~8 tube sides, and the radiation heat affected zone of respective modules recuperative furnace piece 1, which uses, to be divided
Flowing flux design, it is whole without decline water channel, prevent subcooled boiling phenomenon and non-heating period from long-time dry method being needed to protect and cold working medium
The kite of direction of flow is biased in the problems such as being difficult to corrosion caused by excluding, top water channel 171 and lower part water channel 172 using center of gravity
Half kite tee section lacing wire of shape and near wall is changed with enhancing 1 structural strength of modularization recuperative furnace piece and increasing heat exchange area reinforcing
Thinned thickness of liquid film can be effectively torn while thermal effect and reduces tail area, guarantee that Working fluid flow resistance small flow is uniform, top
Water channel 171 uses lateral part with the horizontal arc section lacing wire in 4~10 ° of angles to disappear with the turning of lower part water channel 172 top
Except flow rate caused by cold Working fluid flow inertia distributes uneven phenomenon, the outlet of inlet and outlet fluid interface 11 is arranged in modularization
1 top of recuperative furnace piece guarantees that resistance is roughly the same after top water channel 171 shunts, while can be in the case where not using heat pump 4
Lower part water channel 172 is connect with top water channel 171 can penetrate through the maximum heat transfer effect of 1 inner lead of modularization recuperative furnace piece acquisition.
The condensing heat-exchange area of the modularization recuperative furnace piece 1 uses tetrahedron convex design, effectively tears wall surface thickness liquid film
Reinforce condensate flow and increases heat exchange area；It is set on the heat convection face of modularization recuperative furnace piece 1 using surface longitudinal ripple
Meter, corrugated form are zigzag, rectangle or SIN function waveform, increase the heat exchange area of modularization recuperative furnace piece 1 and enhance stream
Body disturbance, improves heat-transfer effect, selects wave according to cost of manufacture, heat exchange efficiency and Working fluid flow situation in specific production production
Line shape simultaneously determines each external waviness length and height.
The front/rear end of the modularization recuperative furnace piece 1 and with inlet and outlet fluid interface 11 end face through milling machine process simultaneously
Further sanding and polishing, it is ensured that end face is smooth and is in together on a face, later again in the front/rear end of modularization recuperative furnace piece 1
Issue the square groove seal groove of 2~5mm wide on predeterminated position, and according to its specific size produce matched seal washer or
Directly apply plug tool elasticity, high-temperature stability sealant, using screw rod pass through fixed ear 12 make multiple modularization recuperative furnace pieces 1 it
Between closely connection prevent gas leakage.
The modularization recuperative furnace piece 1 uses integral casting process, selects ZL101, ZL102, ZL104 or AlSi10Mg
Trade mark cast aluminium Si-Mg alloy constructs super-hydrophobic film on the condensing heat-exchange area wall surface and needle wing of modularization recuperative furnace piece 1, with
Super-hydrophobicity, self-cleaning property and corrosion resistance, make that 1 flue gas side wall surface of modularization recuperative furnace piece is corrosion-resistant, heat and mass transfer performance mentions
Height, surface smoothness improve, accumulatingdust.
Compared with prior art, the utility model has the advantages that
1, the utility model is designed using coupling heat pump, makes entire heating system in the going out of high parameter, return water and high load capacity
Service condition, which remains unchanged, can guarantee that vapor condensation latent heat makes the heating system thermal efficiency be constantly in highest in most utilization flue gases
It is horizontal.
2, the utility model can realize external pump coupled heat and in heat pump work using the double water channel designs of modularization recuperative furnace piece
Make it is inefficient under conditions of commercial gas water heater for heating direct-furnish circulation form, reasonable pipe design and intelligent operation
Switch two kinds of endless form rapidly.
3, the utility model uses radiation heat affected zone branch canal design, whole without decline water channel, can fall in guarantee molding sand
Out and uniform flow distribution while, expands radiation heating-surface product and has prevented subcooled boiling leads to the hair of heat transfer deterioration phenomenon
It is raw, while solving non-heating period needs long-time dry method to protect and cold working medium the problems such as being difficult to corrosion caused by excluding.
4, the utility model uses a uniform row or two rows for the combination of the multiple section shape of one group of height stagger arrangement
The design of the bluff body protrusion in type fin and condensing heat-exchange area can be effectively prevented smoke corridor phenomenon and reduce assembling difficulty energy simultaneously
Enough reinforce flue gas to wash away fin, the three-dimensional structure needle wing in condensing heat-exchange area effectively tears liquid film and certain gradient on needle wing
It flows to drop in wall surface groove along wing, significantly enhances commercial gas water heater for heating heat and mass transfer performance, utilization is blunt
Body protrusion forms front and back side liquid film jet stream to the strong commutation of condensate film, strongly to red needle wing and wall surface tearing liquid film to strengthen
Heat and mass transfer performance, this is sharpest edges not available for traditional structure, and traditional structure flue two sides liquid film is only along respective
Wall surface flows downward, and only relies on needle wing flow-disturbing tearing liquid film, and the liquid for lacking two sides flue wall surface liquid film liquidates strongly, jet stream punching
The effect of the strong heat and mass transfer enhancement hit.
5, table can be used in modularization recuperative furnace piece heat convection area wall surface, condensing heat-exchange section bluff body protrusion in the utility model
Tetrahedron convex design equally can be used in the design of face longitudinal ripple, modularization recuperative furnace piece heat convection area wall surface, effectively increases
Heat exchange area simultaneously enhances flow disturbance, improves heat-transfer effect.
Detailed description of the invention
Fig. 1 is the cast aluminium silicon magnesium gas water-heating furnace structural system connection signal that the utility model pneumoelectric couples limit condensation
Figure.
Fig. 2 is the round combined needle wing modularization recuperative furnace piece schematic diagram with three-dimensional structure, and wherein Fig. 2 a is main view,
Fig. 2 b is side view, and Fig. 2 c is water channel sectional view, and Fig. 2 d is that (Fig. 2 d1 is half kite tee section lacing wire, Fig. 2 d2 to lacing wire schematic diagram
For the lacing wire of kite tee section), Fig. 2 e is that (Fig. 2 e1 is the height stagger arrangement needle wing that a row is one group to the low stagger arrangement schematic diagram of needle wing height, figure
2e2 is the height stagger arrangement needle wing that two rows are one group), Fig. 2 f is three-dimensional structure needle wing and groove schematic diagram.
Fig. 3 is condensing heat-exchange area schematic diagram.
Fig. 4 is heat convection concentration zones stagger arrangement needle wing and ribs schematic diagram.
Fig. 5 is condensing heat-exchange area diamond shape wing and diagonal rib schematic diagram, and wherein Fig. 5 a is main view, and Fig. 5 b is stereoscopic schematic diagram.
Fig. 6 is condensing heat-exchange area bluff body protrusion schematic diagram, and wherein Fig. 6 a is main view, and Fig. 6 b is lateral sectional view.
Fig. 7 is inlet and outlet fluid interface boss design diagram.
Fig. 8 is condensing heat-exchange area wall surface tetrahedron bulge-structure schematic diagram.
Fig. 9 is condensing heat-exchange area rectangle, zigzag or SIN function waved surface ripple schematic diagram schematic diagram.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments:
As shown in Figure 1, a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation of the utility model, including
Multiple modularization recuperative furnace pieces 1 connect multiple modularization recuperative furnace pieces 1 by pipeline 2 and are formed with plate heat exchanger 3 and heat pump 4
The connection of heating loop, pipeline 2 is crossed by water return pipeline branch, 4 cold end of heat pump and the cold end and hot end for being located at plate heat exchanger 3
The valve group 5 at place controls.
Case study on implementation one
The modularization recuperative furnace piece 1 as described in Fig. 2 a, Fig. 2 b, Fig. 2 c includes inlet and outlet fluid interface 11, fixed ear 12 and position
There is water conservancy diversion rib 14 in the radiation heat affected zone tail portion in the molding sand hole 13 on 1 side of modularization recuperative furnace piece, modularization recuperative furnace piece 1,
It arranges combination needle wing 15 on 1 heat convection face of modularization recuperative furnace piece by rule, 1 side of modularization recuperative furnace piece is provided with deashing
Mouthfuls 16, include top water channel 171 and lower part water channel 172 inside modularization recuperative furnace piece 1.
1 heat exchange area of modularization recuperative furnace piece is non-to change to save material and guaranteeing structural strength with a thickness of 5~7mm
The design wall thickness of hot-zone is 8~30mm.
As shown in Figure 2 b, for the inlet and outlet fluid interface 11 to connecting pipe 2, it is 2~4mm diameter that top, which is provided with depth,
Than the inlet and outlet 10~15mm big groove of fluid interface 11 for placing sealing ring, inlet and outlet 11 upper and lower of fluid interface is provided with spiral shell
Pit guarantees that modularization recuperative furnace piece 1 closely connect with pipeline 2 and prevents cold refrigerant leakage to connect bolt.
As shown in Figure 2 a, the water conservancy diversion rib 14 is arranged in modularization recuperative furnace piece 1 and radiates heat affected zone tail portion, for raising
The coefficient of heat transfer and diversion function etc. wing heights and section it is semicircle in class, by the regularly arranged longitudinal fin of certain spacing.
The combination needle wing 15 is the combined fin of multiple section shape, as shown in Figure 2 e using a uniform row (figure
2e1) or two rows of (Fig. 2 e2) designs for one group of height stagger arrangement needle wing, can be effectively prevented smoke corridor phenomenon, combine needle
Wing 15 radiates heat affected zone tail portion in modularization recuperative furnace piece 1 and the section on convection heating surface transition face is rounded, and height is lower
And distribution is sparse, as flue-gas temperature, amount of radiation reduce, the height of needle wing is also stepped up, and is lower than 500 DEG C of convection current in smoke temperature
Needle wing height degree reaches maximum and density highest on heating surface；Reach 65 DEG C of condensing heat-exchange regions below in smoke temperature as shown in Figure 3
Semicircle lower half diamond shape is presented using section and the three-dimensional structure needle wing shorter with short transverse diamond length, this structure energy
Enough guarantee enough heat exchange areas and effectively tearing condensed water liquid film makes condensate liquid flow to 1 wall of modularization recuperative furnace piece along needle wing
In the groove that face is provided with, the heat and mass transfer performance of 1 condensing heat-exchange section of reinforced module recuperative furnace piece, combine needle wing 15 height and
Stagger arrangement spacing and assembled arrangement distribution calculated according to simulation and experiment is specific determines.
As shown in Figure 2 a, the cleaning door 16 is provided with the side opposite with inlet and outlet fluid interface 11, includes entire cigarette
Gas convection current concentration zones effectively avoid needing in Heating Season integrally sealing off the furnace piece being sealed when deashing, and use is matched
Seal cap sealing prevent flue gas from revealing.
As shown in Figure 2 c, the lower part water channel 172 is 2 tube sides, is in rectangular section, flow area with a thickness of have 20~
30mm is discharged from 4 cold end of heat pump to circulate, fully absorbs condensation latent heat in 1 condensing heat-exchange area flue gas of modularization recuperative furnace piece
Maximize the system effectiveness moment；The top water channel 171 is 4~8 tube sides, the radiation of respective modules recuperative furnace piece 1 by
Hot-zone is designed using branch canal, whole without decline water channel, prevents subcooled boiling phenomenon and non-heating period from long-time dry method being needed to protect
The problems such as corrosion caused by shield and cold working medium are difficult to exclude, using such as Fig. 2 d1, figure in top water channel 171 and lower part water channel 172
Center of gravity shown in 2d2 is biased to half kite tee section lacing wire of the Kite and near wall of direction of flow to enhance modularization recuperative furnace
1 structural strength of piece and increase heat exchange area enhanced heat transfer effect while, can effectively tear thinned thickness of liquid film and reduce tail area,
Guarantee that Working fluid flow resistance small flow is uniform, top water channel 171 and lower part water channel 172 turn top using lateral part and water
The flat arc section lacing wire in 4~10 ° of angles, will to eliminate the distribution uneven phenomenon of flow rate caused by cold Working fluid flow inertia
The outlet of inlet and outlet fluid interface 11 is arranged in 1 top of modularization recuperative furnace piece and guarantees resistance substantially phase after the shunting of top water channel 171
Together, while can connect lower part water channel 172 with top water channel 171 in the case where not using heat pump 4 can penetrate through modularization
1 inner lead of recuperative furnace piece obtains maximum heat transfer effect.
As shown in figure 8, the condensing heat-exchange area of the modularization recuperative furnace piece 1 uses tetrahedron convex design, effectively tear
Wall surface thickness liquid film reinforces condensate flow and increases heat exchange area；As shown in figure 9, the heat convection face of modularization recuperative furnace piece 1
Upper to use surface longitudinal corrugated design, corrugated form is zigzag, rectangle or SIN function waveform, increases modularization recuperative furnace piece
1 heat exchange area simultaneously enhances flow disturbance, improves heat-transfer effect, in specific production production according to cost of manufacture, heat exchange efficiency
Corrugated shape is selected with Working fluid flow situation and determines each external waviness length and height.
The front/rear end of the modularization recuperative furnace piece 1 and with inlet and outlet fluid interface 11 end face through milling machine process simultaneously
Further sanding and polishing, it is ensured that end face is smooth and is in together on a face, later again in the front/rear end of modularization recuperative furnace piece 1
The square groove seal groove 14 of 2~5mm wide is issued on suitable position, and matched gasket is produced according to its specific size
Circle or the sealant for directly applying plug tool elasticity, high-temperature stability, passing through fixed ear 12 using screw rod makes multiple modularization recuperative furnaces
Closely connection prevents gas leakage between piece 1.
Case study on implementation two
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
The wall thickness of the modularization recuperative furnace piece 1 is relatively thin, and groove is difficult in the case where casting, and water chestnut can be used as shown in Figure 2 e
The design of shape boss, diamond shape boss height are 5~10mm, make 1 wall surface of modularization recuperative furnace piece by increasing diamond shape heat convection face
Opposite formed " groove " plays condensate liquid guide functions.
Case study on implementation three
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
The heat convection concentration zones stagger arrangement round pin wing of the modularization recuperative furnace piece 1 using as shown in Figure 4 with a thickness of 2~
4mm, it highly connects for the ribs of 5~15mm, effective booster injection fin structure strength reduction draft difficulty while increases convection current
Heat exchange area simultaneously plays flue gas guide functions.
Case study on implementation four
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
The condensing heat-exchange area of the modularization recuperative furnace piece 1 uses the stagger arrangement diamond shape as shown in Fig. 5 a and Fig. 5 b in Fig. 5
Needle wing, and there are 2~4 to form " positive eight word " type structures for the diagonal rib that one group of stagger arrangement connects needle wing, diagonal rib height be 5~10mm or
It is contour with diamond shape wing, condensing heat-exchange area end need to reserve the diamond shape wing of 4 rows or more with guarantee flow flue gas, this diamond shape needle wing with
The composite structure of diagonal rib can effectively tear liquid film on needle wing and condensate liquid is made to carry over diagonal rib to two sides flowing, expand for center flue gas
Flow region reduces water vapor diffusion in flue gas and strengthens condensing heat-exchange area heat and mass ability to needle wing and wall surface resistance.
Case study on implementation five
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
As shown in Fig. 6 a and Fig. 6 b in Fig. 6, solidifying rear stagger arrangement diamond shape is opened in the condensing heat-exchange area of the modularization recuperative furnace piece 1
It is triangle or the bluff body protrusion of other Reasonable Shapes that section is added in gap, plays the strong commutation after condensate film is formed
It is allowed to jet stream, strongly to red needle wing and wall surface tearing liquid film with heat and mass transfer enhancement performance.
Case study on implementation six
In the present embodiment, 1 structure of modularization heat exchange element that can be used in any of the above-described case is attached combination.
The inlet and outlet fluid interface 11 is designed using boss as shown in Figure 7, can effectively reduce machined surface, reduces processing
Cost.
Claims (10)
1. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation, it is characterised in that: including multiple modularizations
Recuperative furnace piece (1) connects multiple modularization recuperative furnace pieces (1) and plate heat exchanger (3) by pipeline (2) and heat pump (4) is formed
The connection of heating loop, pipeline (2) is controlled by valve group (5)；
The modularization recuperative furnace piece (1) include inlet and outlet fluid interface (11), fixed ear (12) and be located at modularization recuperative furnace
There are water conservancy diversion rib (14), modularization in the radiation heat affected zone tail portion in the molding sand hole (13) on piece (1) side, modularization recuperative furnace piece (1)
It arranges combination needle wing (15) on recuperative furnace piece (1) heat convection face by rule, modularization recuperative furnace piece (1) side is provided with deashing
Mouth (16), internal modularization recuperative furnace piece (1) includes top water channel (171) and lower part water channel (172).
2. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: with a thickness of 5~7mm, non-heat transfer zone design wall thickness is 8~30mm for the heat exchange area of the modularization recuperative furnace piece (1).
3. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: the inlet and outlet fluid interface (11) to connecting pipe (2), using with modularization recuperative furnace piece (1) end face or
Boss design, it is 2~4mm diameter groove 10~15mm bigger than inlet and outlet fluid interface (11) for placement that top, which is provided with depth,
Sealing ring, inlet and outlet fluid interface (11) upper and lower be provided with threaded hole to connect bolt guarantee modularization recuperative furnace piece (1) with
Closely connection prevents cold refrigerant leakage to pipeline (2).
4. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: the water conservancy diversion rib (14) be arranged in modularization recuperative furnace piece (1) radiation heat affected zone tail portion, for improve the coefficient of heat transfer and
Diversion function etc. wing heights and section it is semicircle in class, by the regularly arranged longitudinal fin of certain spacing.
5. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: combination needle wing (15) is the combined fin of multiple section shape, uses a uniform row or two rows for one group
The design of height stagger arrangement needle wing, can be effectively prevented smoke corridor phenomenon, combine needle wing (15) in modularization recuperative furnace piece (1)
It radiates heat affected zone tail portion and the section on convection heating surface transition face is rounded, height is lower and distribution is sparse, with flue gas temperature
Degree, amount of radiation reduce, and the height of needle wing also steps up, and needle wing height degree reaches on convection heating surface of the smoke temperature lower than 500 DEG C
Maximum and density highest is effectively enhanced needle fin structure intensity and is increased heat convection face simultaneously and risen using ribs connection structure
To the effect of water conservancy diversion flue gas；Reach 65 DEG C of condensing heat-exchange regions below using diamond shape needle fin structure in smoke temperature, or uses diamond shape
Needle wing forms " positive eight word " structure plus diagonal rib, has the function of condensate liquid water conservancy diversion, flue gas rectification, or using section in upper semi-circle
Shape lower half diamond shape and the three-dimensional structure needle wing shorter with short transverse diamond length, between the height and stagger arrangement that combine needle wing (15)
Away from and assembled arrangement distribution calculated according to simulation and experiment is specific determines, the condensing heat-exchange area of modularization recuperative furnace piece (1) is adopted
It is designed with the bluff body protrusion of right angled triangle, isosceles triangle or rectangle.
6. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: the cleaning door (16) is provided with the side opposite with inlet and outlet fluid interface (11), includes entire smoke convection and concentrates
Area prevents smoke spillage using matched seal cap sealing.
7. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: the lower part water channel (172) is 2 tube sides, is in rectangular section, flow area is with a thickness of there is 20~30mm；The top
Water channel (171) is 4~8 tube sides, and the radiation heat affected zone of respective modules recuperative furnace piece (1) is designed using branch canal, whole
Without decline water channel, prevent subcooled boiling phenomenon and non-heating period need long-time dry method protect and cold working medium is difficult to exclude caused corruption
Erosion problem, the half of top water channel (171) and lower part water channel (172) interior Kite for using center of gravity to be biased to direction of flow and near wall
Kite tee section lacing wire, top water channel (171) and lower part water channel (172) turning top are in 4~10 ° using lateral part and level
The arc section lacing wire of angle will import and export fluid to eliminate the distribution uneven phenomenon of flow rate caused by cold Working fluid flow inertia
Resistance is roughly the same after interface (11) outlet is arranged in modularization recuperative furnace piece (1) top guarantee top water channel (171) shunting, together
When lower part water channel (172) is connect with top water channel (171) in the case where not using heat pump (4) modularization heat exchange can be penetrated through
Furnace piece (1) inner lead obtains maximum heat transfer effect.
8. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: the condensing heat-exchange area of the modularization recuperative furnace piece (1) uses tetrahedron convex design；Modularization recuperative furnace piece (1)
Surface longitudinal corrugated design is used on heat convection face, corrugated form is zigzag, rectangle or SIN function waveform.
9. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
It is: the front/rear end of the modularization recuperative furnace piece (1) and there is the end face of inlet and outlet fluid interface (11) smooth to be in one
On a face, and the square groove seal groove of 2~5mm wide is issued on the front/rear end predeterminated position of modularization recuperative furnace piece (1), and
Matched seal washer is installed according to its specific size or directly applies the sealant of plug tool elasticity, high-temperature stability, uses spiral shell
Bar makes closely to connect multiple modularization recuperative furnace pieces (1) across fixed ear (12) prevents gas leakage.
10. a kind of cast aluminium silicon magnesium gas and hot water furnace structure of pneumoelectric coupling limit condensation according to claim 1, feature
Be: the modularization recuperative furnace piece (1) uses integral casting process, using ZL101, ZL102, ZL104 or AlSi10Mg board
Number cast aluminium Si-Mg alloy.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917174A (en) * | 2018-09-05 | 2018-11-30 | 西安交通大学 | A kind of cast aluminium silicon magnesium gas water-heating furnace of pneumoelectric coupling limit condensation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917174A (en) * | 2018-09-05 | 2018-11-30 | 西安交通大学 | A kind of cast aluminium silicon magnesium gas water-heating furnace of pneumoelectric coupling limit condensation |
| CN108917174B (en) * | 2018-09-05 | 2024-03-12 | 西安交通大学 | Gas-electricity coupling limit condensation cast aluminum silicon magnesium gas water heater |
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