CN107314357A - The steam generator that perforated area changes in a kind of short transverse - Google Patents
The steam generator that perforated area changes in a kind of short transverse Download PDFInfo
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- CN107314357A CN107314357A CN201710635570.1A CN201710635570A CN107314357A CN 107314357 A CN107314357 A CN 107314357A CN 201710635570 A CN201710635570 A CN 201710635570A CN 107314357 A CN107314357 A CN 107314357A
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- electric heating
- heating tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
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Abstract
The invention provides the steam generator that perforated area in a kind of short transverse changes, the steam generator includes casing, electric heating tube and steam (vapor) outlet, the electric heating tube is arranged in casing, the electric heating tube includes outer tube and the electric heater being arranged in outer tube, the electric heating tube is set for vertical direction, the outer tube bottom sets perforate, the top connection steam (vapor) outlet of electric heating tube;Along short transverse, the perforate is set to multiple rows of, the multiple perforates of often row's setting, and along in short transverse, the area sum per rows of openings is less and less.The present invention devises the steam generator of Novel structure, is changed by perforated area in short transverse, the dry of electric heating tube is reduced, while improving the efficiency of heating surface.
Description
Technical field
The present invention relates to boiler technology field, more particularly to a kind of steam generator of Novel structure.
Background technology
Steam generator is the plant equipment for water being heated as using the heat energy of fuel or other energy steam.Steam is sent out
Raw device application field extensively, is widely used in clothing factory, drycleaner's, restaurant, steamed bun shop, dining room, dining room, factories and miness, Bean Products Factory etc.
Place.
Combustion gas or fuel Heating are used current steam generator more, and the efficiency of heating surface is low, and the electricity used at present
Hot steam generator, is to be arranged on using electrothermal tube to the bottom of storage tank mostly, directly heats and produce to the water in storage tank
Steam., there is heating slowly, the problem of thermal efficiency is low in this electric heating steam generator.
Such as Chinese patent literature CN2071061U discloses a kind of for beauty, the steam generating appliances of health care effect, bag
Include metal electrode board and the housing being made of heat resistant plastice, go out vapour cover plate, interior panelling, flexible handle, metal electrode board is necessary
Switch on power through power line, there is internal baffles in housing, it is suitable for reading have have socket groove can be with carrying spigots outside vapour cover plate, housing bottom
Flexible handle be connected.For another example a kind of improved electric heating steam generator disclosed in Chinese patent literature CN2651594Y, is used
In producing steam, including body cavity and electric heater, electric heater is placed in body cavity, will provided with dividing plate in body cavity
Cavity is upper and lower to be separated, and upper cavity is vapor cavity, and lower chamber is heating water cavity, and dividing plate is provided with steaming hole;Dividing plate has 2-6 layers,
The dislocation of the steaming hole on transition chamber, adjacent dividing plate arrangement is formed between dividing plate.Electric heater heats the water heated in water cavity, steams
Vapour enters standby in vapor cavity by dividing plate and its transition chamber of formation.Electric-heating steam disclosed in above-mentioned two patent document
Generator, belongs to such product.
The content of the invention
The present invention is for of the prior art not enough there is provided a kind of Novel structure Multifunctional steam generator, and the steaming
Vapour generator, which has, heats rapid, uniformity of temperature profile, safe and reliable function, improves the efficiency of heating surface.
To achieve the above object, the present invention is adopted the following technical scheme that:
In a kind of short transverse perforated area change steam generator, the steam generator include casing, electric heating tube and
Steam (vapor) outlet, the electric heating tube is arranged in casing, and the electric heating tube includes outer tube and the electrical heating being arranged in outer tube
Device, the electric heating tube is set for vertical direction, and the outer tube bottom sets perforate, and the top connection steam of electric heating tube goes out
Mouthful;Along short transverse, the perforate is set to multiple rows of, the multiple perforates of often row's setting, along in short transverse, per rows of openings
Area sum is less and less.
Preferably, along short transverse, the less and less amplitude of the area sum per rows of openings is continuously increased.
Preferably, the hole shape is circular or square.
Preferably, described casing top sets exhaust outlet.
Preferably, the perforate is arranged on less than the 50% of casing water level.
Preferably, the centrally disposed center electrically heated rod axially of the electric heating tube and along center
Electrically heated rod sets many from radial direction electrically heated rod to many radial direction electrically heated rods radially extended on the radial direction electrically heated rod
The triangle fin stretched out.
Preferably, described triangle fin is right angled triangle fin, the short side for forming right angle is located at radially
On bar, long side stretches out from radial bars;Multiple triangle fin are set on each radial direction electrically heated rod, and multiple triangles dissipate
Backing is similar figures;
The acute angle that the short side at the right angle is relative is M, and the length of side on the long side at right angle is adjacent on L, same radial direction electrically heated rod
The adjacent distance of triangle fin is S, then meets following require:
tan(M)=a*tan(S/L)3-b*(S/L)2+ c* (S/L)-d, wherein tan is trigonometric function, a, b, and c, d is parameter;
61.0<a<61.5,
60.0<b<60.5,
21<c<22,
2.2<d<2.3,4<M<35 °,
0.18< S/L <0.38。
Preferably, 0.25R<L<0.32 R, wherein R are to be located at axially radiating from electric heating tube center of circle the to right angled triangle
The distance at the midpoint on the side at the place of piece.
The invention has the advantages that:
1)The present invention passes through the change along short transverse perforated area, it is ensured that most of water is heated in bottom, becomes to steam in water
Constantly there is water to enter electric heating tube, continuous heating in vapour uphill process.If bottom water inlet is few, bottom water is likely to result in fast
Speed vaporization, causes electrical heating overpressure excessive, causes the water on top also because pressure considerations cannot be introduced into electric heating tube.Reduce
Electric heating tube it is dry, while improve the efficiency of heating surface.
2)The present invention devises a kind of steam generator of Novel structure, by such a structure, can pass through a device
Steam and hot water double action is realized, simple in construction, the efficiency of heating surface is high.
3)The present invention is by setting the perforate of electric heating tube bottom along the distribution density in short transverse, area and many
The setting of the spacing change of rows of openings, further increases the efficiency of heating surface, improves the security performance of steam generator.
4) present invention devises new-type vertical tubular electric heating tube, and electric heating tube top directly connects steam (vapor) outlet,
By such a mechanism, the efficiency of heating surface can be further improved.
5)The present invention devises change of the electrical heating efficiency along short transverse, can further improve the security of device
Energy and heating properties.
6)The present invention devises the electric heating tube of new-type interior heat radiating fin structure, passes through the triangle of Novel structure electric heating tube
Fin, adds the disturbance of heating surface (area) (HS and fluid, improves heating effect.
7)The present invention passes through numerical simulation and many experiments, it is determined that the optimal relation of interior fin, further improves
Heating effect, is also related to there is provided an optimal reference frame for the electric heating tube of such a structure.
Brief description of the drawings:
Fig. 1 produces the steam generator preferred structure schematic diagram of hot water and steam for the present invention.
Fig. 2 is the steam generator preferred structure schematic diagram for only producing steam of the invention.
Fig. 3 is electric heating tube Structure of cross section schematic diagram.
Fig. 4 is heat sink sizes schematic diagram in electric heating tube.
Fig. 5 is the longitudinal tangent plane schematic diagram of electric heating tube.
In figure:1- casings;2- electric heating tubes;3- cold water inlets;4- hot water outlets;5- steam (vapor) outlets;6- exhaust outlets;
21- outer tubes;22- radial direction electrically heated rods;23- triangle fin;24- centers electrically heated rod;25- perforates.
Embodiment
Fig. 1-5 illustrates a kind of steam generator.As shown in figure 1, the steam generator includes casing 1, electric heating tube
2nd, cold water inlet 3, hot water outlet 4 and steam (vapor) outlet 5, the cold water inlet 3 are arranged on the bottom of casing 1, and the hot water goes out 4 mouthfuls
Positioned at the top of the body of case 1.The electric heating tube 2 is arranged in casing, and the electric heating tube 2 is set for vertical direction(Perpendicular to
Water tank bottom plane is set), electric heating tube 2 includes outer tube 21 and the electric heater that is arranged in outer tube 21, the electric heating tube 2
Bottom sets intake tunnel, it is ensured that the water of casing 1 can be heated into electric heating tube 2, and the top connection of electric heating tube 2 is steamed
Vapor outlet 5.
Preferably, the described pipeline of steam (vapor) outlet 5 and the outer tube of electric heating tube 2 are to be tightly connected.
Preferably, the external diameter of the pipeline of steam (vapor) outlet 5 is less than the external diameter of the outer tube of electric heating tube 2.It so ensure that steaming
The vapour velocity of discharge.
Cold water enters casing by cold water inlet 3.When being operated, electric heating tube 2 is arranged in casing 1, in casing 1
Water enters electric heating tube 2 by the perforate 25 on outer tube 21, is then heated in electric heating tube 2, the steaming produced after heating
Vapour is discharged by steam (vapor) outlet 5.Meanwhile, electric heating tube is while steam is produced, while the water in heating compartment, is produced after heating
Raw hot water can be utilized by hot water outlet.
By above-mentioned structure setting, steam and hot water can be produced simultaneously so that steam generator has a variety of functions,
Its scope utilized has been expanded, and the steam produced is directly discharged by the steam (vapor) outlet being connected with electric heating tube, because being
Heat the water outside electric heating tube by outer tube 21, thus outside water will not explosive evaporation, also ensure that the safety of heating
Property.
The present invention is set by electric heating tube 2 for vertical direction, in the vertical direction can be caused to heat water so that water exists
Continuous heating in uphill process, relative to horizontally arranged electric heating tube, further increases the efficiency of heating surface.
As an improvement, hot water outlet 4 can be removed, such as shown in Fig. 2 only regarding steam generator as one
Produce the simple function evaporator of steam.
Preferably, the described top of casing 1 sets exhaust outlet 6.By setting exhaust outlet 6, it is to avoid the internal pressure of casing 1
It is excessive, it is ensured that safety.
Preferably, the cross section of described casing is circular.
Preferably, the cross section of the electric heating tube 2 is circular.
Preferably, the electric heating tube 2 is arranged on the centre position of casing.By being arranged such, it is ensured that hot water heating
Uniformity.
Preferably, the external diameter of the outer tube 21 of the electric heating tube 2 is 0.3-0.45 times of the internal diameter of casing 1.Further
Preferably 0.35-0.40 times.
Preferably, intake tunnel is strip slot.
Preferably, intake tunnel is perforate 25.As shown in Figure 5.It should be noted that be only schematic diagram in Fig. 5, though
1 or a rows of openings 25 of setting are only shown in right Fig. 5 between adjacent electrically heated rod 22, is actually not only limited to
In one or a row, it can set multiple or multiple rows of on the upper-lower position between adjacent electrically heated rod 22.
Preferably, the shape of perforate 25 can be circular or square.
Preferably, the perforate 25 is arranged on less than the 50% of the water level of casing 1.By being arranged such, water energy ensure that
It is enough to be timely internally heated into electric heating tube 2, too high cause steam to be overflow from perforate 25 while also avoiding perforate 25 from setting
Go out, it is to avoid pressure is excessive in whole casing, while also avoiding the water of eminence from entering in electric heating tube, cause the steam produced to take
The moisture of band is too many.
Preferably, along short transverse(That is direction from the bottom up, appear below along short transverse, if do not had
Specified otherwise, all referring to direction from the bottom up), the perforate 25 is set to multiple rows of.
It is multiple rows of by setting, it is ensured that different height and position water inlets, it is to avoid independent position water inlet, cause heating
It is uneven, while the water avoided enter into is evaporated, cause to dry up in heating tube.
Preferably, along short transverse, the distribution density of the perforate 25 is less and less.The density that perforate 25 is distributed is got over
Come smaller, that is, mean the fewer and fewer of perforate distribution, the area of perforate is also just less and less.
By substantial amounts of numerical simulation and its experimental studies have found that, by setting perforate distribution density less and less, mainly
Reason is to ensure that most of water is heated in bottom, constantly has water to enter electric heating tube 2 in water becomes steam uphill process, holds
Continuous heating.If bottom water inlet is few, bottom water fast vaporizing is likely to result in, causes in electric heating tube 2 that pressure is excessive, is caused
The water in portion is also because pressure considerations cannot be introduced into electric heating tube.The dry of electric heating tube is reduced, while improving the efficiency of heating surface.
Further preferably, along short transverse, the amplitude that the distribution density of the perforate 25 is less and less constantly increases.
By substantial amounts of experiment and numerical simulation, by the change of above-mentioned perforate distribution density, can further it improve
The efficiency of heating surface, improves the output efficiency of steam, while can reduce dry in electric heating tube.
Preferably, along short transverse, the area of single perforate 25 is less and less.Further preferably, along height side
To, the amplitude that the area of single perforate 25 is less and less constantly increases.Specific reason referring to the distribution density of perforate 25 change
Change.
Preferably, along short transverse, the area sum per rows of openings 25 is less and less.Preferably, along
Short transverse, the less and less amplitude of the area sum per rows of openings 25 is continuously increased.Specific reason is referring to 25 points of perforate
The change of cloth density.
Preferably, along short transverse, the spacing between every rows of openings 25 is increasing.Preferably, along
Short transverse, the amplitude increasing per the spacing between rows of openings 25 is continuously increased.Specific reason is referring to 25 points of perforate
The change of cloth density.
Preferably, the centrally disposed center electrically heated rod 24 axially of electric heating tube 2.
Preferably, along short transverse, the heating power of the unit length of electrically heated rod 24 is constantly reduced.By setting
The heating power for putting electrically heated rod 24 is constantly reduced, it is ensured that the fluid of bottom is quickly heated, and then hot fluid passes through naturally right
The fluid flowed to outside top, the fluid on top and the electric heating tube 2 of its underpart is rapidly entered, and can further improve heating
Efficiency.By substantial amounts of experiment and numerical simulation, by the change of above-mentioned electric heater for heating power, can further it improve
10% or so the efficiency of heating surface, saves the heat time.
Preferably, along short transverse, the amplitude of the continuous reduction of heating power of the unit length of electrically heated rod 24
Constantly increase.
, can by the change of the above-mentioned heating power amplitude of electrically heated rod 24 by substantial amounts of experiment and numerical simulation
5% efficiency of heating surface is further improved, the heat time is further saved.
Preferably, 24 points of electrically heated rod is multistage, along short transverse, the heating power of the unit length of different sections is not
Together.Wherein along short transverse, the heating power of the unit length of different sections is constantly reduced.Further preferably, the width of reduction
Degree constantly increase.
Preferably, every section of length is identical.
Preferably, the heating power of every section of unit length is identical.
Specific reason is as above.
, can be with further such that being simple to manufacture conveniently by setting segmentation.
The electric heating tube 2 is along center electrically heated rod 24 to many radial direction electrically heated rods 22 radially extended, the footpath
The many triangle fin 23 stretched out from radial direction electrically heated rod 22 are set on to electrically heated rod 22.
The present invention is by setting radial direction electrically heated rod 22 and being dissipated along the triangle that radial direction electrically heated rod 22 stretches out
Backing 23, can further improve the efficiency of heating surface, while increasing heating surface (area) (HS, improve heating effect, and because set triangle
Shape fin, passes through the triangular tip of the similar acicular texture of triangle fin so that the vapor bubbles of generation are rising
During, it can further increase flow-disturbing, cut bubble so that air pocket turns to smaller bubble, further promote vapour-liquid
Fusion, promotes the heat exchange of vapour-liquid so that fluid is sufficiently mixed, improves heating effect.
Further preferably, radial direction electrically heated rod cross section is rectangle, is preferably square.
Further preferably, radial direction electrically heated rod cross section is circle.
Preferably, 0.3-0.5 times of electrically heated rod centered on the heating power of radial direction electrically heated rod in unit length,
Preferably 0.4 times.
Preferably, described radial direction electrically heated rod 22 is shaft, electrical heating is extended to from the center of circle along radial direction
The inwall of pipe 21.
Preferably, setting multiple triangle fin 23, described multiple triangles on 22 on each radial direction electrically heated rod
Shape fin 23 is similar figures.Three interior angles in correspondence with each other of i.e. different triangle fin are identical.
Preferably, from the center of electric heating tube 21 to the inside pipe wall of electric heating tube 21, the length of side of triangle fin 23
Or area is less and less.
Preferably, the both sides distribution triangle fin 23 of radial direction electrically heated rod 22, triangle fin 23 is along radially
The center line of electrically heated rod 22 is symmetrical.
Preferably, the distance between adjacent triangle fin 23 of radial direction electrically heated rod 22 keeps constant.
Preferably, from the center of electric heating tube 21 to radial direction, the adjacent triangle of radial direction electrically heated rod 22 radiating
Spacing between piece 23 constantly increases.
Constantly increased by the spacing between the adjacent triangle fin 23 of radial direction electrically heated rod 22, can caused outer
Fluid stream momentum big local fluid circulation space in portion's is big, can further reduce flow resistance, heating effect is kept not substantially
Become.
Preferably, described triangle fin 23 is right angled triangle fin, the short side for forming right angle is located at footpath
To on electrically heated rod, long side stretches out from radial direction electrically heated rod.
Preferably, the radial direction electrically heated rod 22 is round bar, its a diameter of 0.6-1.2mm, preferably 0.8mm.
Preferably, triangle fin stretches out from the central plane of round bar.The triangle fin is flat board
Structure.The slab construction is perpendicular to center electrically heated rod 24, and slab construction extended surface passes through the center line of round bar.
Learnt by numerical analysis and experiment, adjacent triangle fin spacing can not be too big, then can greatly very much
Cause fin heat transfer area too small, augmentation of heat transfer effect is bad, but spacing can not be too small, spacing is too small, causes in pipe
Fluid circulation space is too small, and the resistance for causing steam to be flowed in pipe 2 is too big, and similarly, the drift angle of triangle fin can not be too
Greatly, flow resistance can be also influenceed very much greatly, and greatly flow-disturbing effect can be caused bad very much, but can not be too small, too
Heating surface (area) (HS is too small if small, can also influence heating effect.Therefore the present invention is come in terms of heating effect and flow resistance two
Account for, therefore the present invention is preferentially meeting normal flow resistance by substantial amounts of experiment(Total pressure-bearing is below 8Mpa)
In the case of so that being optimal of heating effect, arrange the optimal relation of parameters.
The acute angle that the short side at the right angle is relative is M, and the length of side on the long side at right angle is on L, same radial direction electrically heated rod 22
The adjacent distance of adjacent triangle fin is S, then meets following require:
tan(M)=a*tan(S/L)3-b*(S/L)2+ c* (S/L)-d, wherein tan is trigonometric function, a, b, and c, d is parameter;
61.0<a<61.5, preferred a=61.295,
60.0<b<60.5, preferred b=60.267,
21<c<22, preferred c=21.412,
2.2<d<2.3, preferably d=2.2734
4<M<35 °, preferably 8<M<25°
0.18< S/L <0.38,0.25R<L<0.32 R。
R is the distance at the midpoint on the side at the place for being located at axial cooling fin 22 from the center of circle of electric heating tube 2 to right angled triangle.
It is wherein adjacent apart from S be with adjacent triangle fin be located at axial cooling fin 22 place side between
Away from;I.e. triangle fin be located at axial cooling fin 22 place side rear end and rear triangular be located at axial cooling fin
The distance between the side front end at 22 place.Referring specifically to Fig. 4 mark.
Preferably, radial direction electrically heated rod 22 is set to the angle formed between 7-9 roots, adjacent radial direction electrically heated rod 22
It is equal.More preferably 8.
Right angle it is long while length of side L choose adjacent triangle fin two right angles it is long while the length of side be averaged
Value.
Further preferably, the internal diameter of electric heating tube is 25-40mm.
Preferably, electric heating tube is straight tube.
Preferably, the heating power of steam generator is 2000-4000W, preferably 2500-3500W.
Preferably, electrically heated rod 24,22 is resistance heater, by setting the diameter of resistance long to change unit
The change of the heating power of degree.
Preferably, along short transverse, the distance between neighbouring radial direction electrically heated rod 22 is increasing.Enter one
Step is preferred, and along short transverse, the increasing amplitude of the distance between adjacent radial direction electrically heated rod 22 constantly increases.
Preferably, along short transverse, the heating power of the unit length of different radial direction electrically heated rod 22 is increasingly
It is small.Further preferably, the less and less amplitude of the different unit length heating powers of radial direction electrically heated rod 22 constantly increases.
By set the heating power of electrically heated rod 22 constantly to reduce in the height direction or the distance between it is more next
Bigger, it is ensured that the fluid of bottom is quickly heated, then hot fluid has arrived top, the fluid on top and its underpart by free convection
Electric heating tube 2 outside fluid rapidly enter, can further improve the efficiency of heating surface.By substantial amounts of experiment and Numerical-Mode
Intend, by the change of above-mentioned electric heater for heating power, the 8-10% efficiencies of heating surface can be further improved, when saving heating
Between.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (8)
1. a kind of steam generator that perforated area changes in short transverse, the steam generator includes casing, electric heating tube
And steam (vapor) outlet, the electric heating tube is arranged in casing, and the electricity that the electric heating tube includes outer tube and is arranged in outer tube adds
Hot device, the electric heating tube is set for vertical direction, and the outer tube bottom sets perforate, and the top connection steam of electric heating tube goes out
Mouthful;Along short transverse, the perforate is set to multiple rows of, the multiple perforates of often row's setting, along in short transverse, per rows of openings
Area sum is less and less.
2. steam generator as claimed in claim 1, it is characterised in that along short transverse, the area per rows of openings
The less and less amplitude of sum is continuously increased.
3. steam generator as claimed in claim 1, it is characterised in that the hole shape is circular or square.
4. steam generator as claimed in claim 1, it is characterised in that described casing top sets exhaust outlet.
5. steam generator as claimed in claim 1, it is characterised in that the perforate is arranged on less than the 50% of casing water level.
6. steam generator as claimed in claim 1, it is characterised in that the centrally disposed axially side of the electric heating tube
To center electrically heated rod and along center electrically heated rod to many radial direction electrically heated rods radially extended, the radial direction electricity plus
The many triangle fin stretched out from radial direction electrically heated rod are set on hot pin.
7. steam generator as claimed in claim 6, it is characterised in that described triangle fin is that right angled triangle dissipates
Backing, the short side for forming right angle is located in radial bars, and long side stretches out from radial bars;Set many on each radial direction electrically heated rod
Individual triangle fin, multiple triangle fin are similar figures;
The acute angle that the short side at the right angle is relative is M, and the length of side on the long side at right angle is adjacent on L, same radial direction electrically heated rod
The adjacent distance of triangle fin is S, then meets following require:
tan(M)=a*tan(S/L)3-b*(S/L)2+ c* (S/L)-d, wherein tan is trigonometric function, a, b, and c, d is parameter;
61.0<a<61.5,
60.0<b<60.5,
21<c<22,
2.2<d<2.3,4<M<35 °,
0.18< S/L <0.38。
8. steam generator as claimed in claim 7, it is characterised in that 0.25R<L<0.32 R, wherein R are from electric heating tube
The center of circle is located at the distance at the midpoint on the side at the place of axial cooling fin to right angled triangle.
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CN109611812A (en) * | 2018-10-23 | 2019-04-12 | 山东交通学院 | A kind of steam generator generating hot water |
CN109611811A (en) * | 2018-10-23 | 2019-04-12 | 山东交通学院 | A kind of steam generator |
CN109611810A (en) * | 2018-10-23 | 2019-04-12 | 山东交通学院 | A kind of steam generator of electrical heating power distance center variation |
CN109695862A (en) * | 2018-10-23 | 2019-04-30 | 山东交通学院 | A kind of steam generator of interval setting intake tunnel |
CN109695863A (en) * | 2018-10-23 | 2019-04-30 | 山东交通学院 | A kind of steam generator design method of electric heater capacity optimization |
CN110067996A (en) * | 2018-11-28 | 2019-07-30 | 山东交通学院 | A kind of steam generator design method of inlet opening row spacing variation |
CN110067998A (en) * | 2018-11-28 | 2019-07-30 | 山东交通学院 | A kind of steam generator of square center structure |
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CN111089281A (en) * | 2018-10-23 | 2020-05-01 | 青岛佰腾科技有限公司 | Steam generator with variable core heating power |
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