CN107084381B - A kind of damping steam boiler - Google Patents
A kind of damping steam boiler Download PDFInfo
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- CN107084381B CN107084381B CN201710266633.0A CN201710266633A CN107084381B CN 107084381 B CN107084381 B CN 107084381B CN 201710266633 A CN201710266633 A CN 201710266633A CN 107084381 B CN107084381 B CN 107084381B
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- 238000013016 damping Methods 0.000 title description 6
- 239000003381 stabilizer Substances 0.000 claims abstract description 82
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 230000000630 rising effect Effects 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 23
- 238000012546 transfer Methods 0.000 abstract description 12
- 230000005514 two-phase flow Effects 0.000 abstract description 8
- 230000003416 augmentation Effects 0.000 abstract description 5
- 230000003313 weakening effect Effects 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 239000007791 liquid phase Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 210000004262 dental pulp cavity Anatomy 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000011555 saturated liquid Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
- F22B21/02—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes
- F22B21/04—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of steam boilers, including upper drum and lower drum and the tedge and down-comer that are connected between upper drum and lower drum, constant-current stabilizer is set in the tedge, the multiple constant-current stabilizers of setting in same root tedge, along the fluid flow direction of tedge, the spacing between adjacent constant-current stabilizer constantly reduces.The present invention is changed by the spacing of constant-current stabilizer, there are when Gas- liquid two-phase flow in tedge, augmentation of heat transfer, while weakening the vibration of tedge, reduce noise level.
Description
Technical field
The present invention is the project for entrusting colleges and universities to be researched and developed.The invention belongs to steam generation field more particularly to a kind of steamings
Boiler furnace belongs to the field IPC code F22.
Background technique
Receive heat from furnace and fluid is made to flow to high-order circuit referred to as " riser circuit " from low level, and receives heat
It measures and the circuit for making fluid flow to low level from a high position is referred to as " decline circuit ".One circuit is by a pipe or one group of pipe
Composition, this group of pipe draw from a common point, such as header or steamdrum, terminate at and be similarly public affairs as header or drum
Concurrent.
In the design of most of natural circulation boilers, the heat pipe of evaporation section is constituted generally for fluid flows upward, but
In more drum-type boilers, the downflow heated tube of steam-generating bank is quite different.In such boiler, downflow heated tube provides furnace
Whole circular flows of interior and steam-generating bank part tedge.
On the one hand, the fluid of tedge is during upwards, usually stream-liquid two-phase flow, so that the stream in tedge
Body is liquid-vapor mixture, and the presence of stream-liquid two-phase flow makes the efficiency for affecting tedge heat absorption.
On the other hand, this section of upper drum is exported to from tedge, because the space of this section becomes larger suddenly, the change in space
Change and will lead to quickly flowing upwards out and assemble for gas, therefore spatial variations will lead to the vapour phase of aggregation（Vapour group）From tedge position
It sets and enters upper drum, due to gas（Vapour）Liquid density contrast, air mass leaves adapter tube position and will move rapidly upward, and air mass original space bit
It sets and the liquid of wall surface is pushed away by air mass while will also spring back and hit wall surface rapidly, form impingement phenomenon.Gas（Vapour）Liquid phase is more not
Continuously, air mass aggregation is bigger, and Impact energy is bigger.Impingement phenomenon will cause biggish noise vibration and mechanical shock, to equipment
It damages.
The present inventor also devises a kind of multitube constant-current stabilizer in applying in front, shown in Figure 7.But such dress
It sets and finds in operation, because being to be closely linked between pipe, the space A formed between three root canals is relatively
Small, because the convex arc that space A is three root canals is formed, most of area stenosis of space A will cause fluid and be difficult to enter
Pass through, cause fluid short, to affect the heat exchange of fluid, good current stabilization can not be played the role of.Simultaneously as above-mentioned knot
More root canal subgroups of structure are combined, and manufacture is difficult.
In view of the above-mentioned problems, the present invention is improved on the basis of invention in front, a kind of new steam copper is provided
Furnace, to solve the problems, such as that tedge heat absorption efficiency is low.
Summary of the invention
The present invention provides a kind of new steam boilers, to solve the technical issues of front occurs.
To achieve the goals above, technical scheme is as follows：
A kind of steam boiler, including upper drum and lower drum and the tedge being connected between upper drum and lower drum under
Drop pipe, which is characterized in that constant-current stabilizer is set in the tedge, the multiple constant-current stabilizers of setting in same root tedge, along
The fluid flow direction of tedge, the spacing between adjacent constant-current stabilizer constantly reduce.
Preferably, the ever-reduced width of spacing along the fluid flow direction of tedge, between adjacent constant-current stabilizer
It spends increasing.
Preferably, constant-current stabilizer is arranged in the tedge, the constant-current stabilizer includes core and shell, the core
In the shell, the shell is connected and fixed with inside pipe wall is risen for setting, and the core is one extended along outer cover length direction
Body structural member is provided with a number of through hole on the structural member.
Preferably, the through hole is round, the distance between adjacent through hole center of circle L1>2R, wherein R is perforation
Pore radius.
Preferably, aperture is arranged between adjacent through hole, the connection between through hole is realized by aperture.
Preferably, groove is arranged in the rising inside pipe wall, the shell of the constant-current stabilizer is arranged in groove, described outer
The inner wall of shell and the aligning inner of tedge.
Preferably, tedge is welded for multi-segment structure, constant-current stabilizer is arranged in the junction of multi-segment structure.
Preferably, the distance between adjacent constant-current stabilizer is S, the length of constant-current stabilizer is C, and the outer diameter of heat exchanger tube is W,
The radius of through hole is R, the distance between adjacent through hole center of circle L1, meets following require：
S/C=a-b*LN (W/（2*R）)；
L1/（2*R） =c*(W/（2*R）)-d*(W/（2*R）)2-e
Wherein LN is logarithmic function, and a, b, c, d, e is parameter, wherein 3.0<a<3.5,0.5<b<0.6；2.9<c<3.1,
0.33<d<0.37,4.8<e<5.3；
Wherein the spacing of constant-current stabilizer is the both ends the distance between opposite with adjacent constant-current stabilizer；
34<W<58mm；
4<R<6mm;
17<C<25mm；
32<S<40mm；
1.05<L1/（2*R）<1.25.
Preferably, a=3.20, b=0.54, c=3.03, d=0.35, e=5.12.Preferably, in tedge and level
The angle that face is formed is A, then
C*S/C=a-b*LN (W/D)；c=1/sin(A)d, wherein 0.09<d<0.11,
20°<A<80°。
Preferably, d=0.10.
Preferably, groove is arranged in the rising inside pipe wall, the shell of the constant-current stabilizer is arranged in groove, described outer
The inner wall of shell and the aligning inner of tedge.
Preferably, tedge is welded for multi-segment structure, constant-current stabilizer is arranged in the junction of multi-segment structure.
Compared with prior art, the present invention has the advantage that：
1）The present invention is changed by the spacing of constant-current stabilizer, there are when Gas- liquid two-phase flow in tedge, augmentation of heat transfer,
Weaken the vibration of tedge simultaneously, reduces noise level.
2）Porous type constant-current stabilizer is arranged in the present invention in tedge, is separated two-phase fluid by porous type constant-current stabilizer
At liquid phase and vapour phase, liquid phase is divided into small liquid group, vapour phase is divided into minute bubbles, promotes vapour phase smooth outflow, plays stabilization
The effect of flow has the effect of vibration and noise reducing, improves heat transfer effect.Relative to multitube constant-current stabilizer, further increase steady
Effect, augmentation of heat transfer are flowed, and is simple to manufacture.
3）The present invention is equivalent in tedge by setting porous type constant-current stabilizer and increases inner fin, enhanced and changed
Heat improves heat transfer effect.
4）The present invention avoids only because vehicle repair major is divided in the entire cross-section location of tedge
Tedge inner wall is split, thus entirely rise realized on tube section expand liquid-vaqor interface and vapour phase boundary layer with it is cold
But the contact area of wall surface and enhance disturbance, reduce noise and vibration, enhance heat transfer.
5）The present invention passes through the distance that is arranged between adjacent constant-current stabilizer on tedge fluid flow direction, constant-current stabilizer
The rule variation of length, the parameters size such as outer diameter of pipe reduce noise to further reach steady flow result, raising is changed
Thermal effect.
6）The present invention has been carried out widely by heat exchange rule caused by the variation to porous type constant-current stabilizer parameters
Research, when meeting flow resistance, realizes the best relation formula of the effect of vibration and noise reducing.
Detailed description of the invention
Fig. 1 is steam boiler structural schematic diagram of the invention；
Fig. 2 is another embodiment schematic diagram of steam boiler structure of the invention；
Fig. 3 constant-current stabilizer cross-sectional structure schematic diagram of the present invention；
Fig. 4 is constant-current stabilizer of the present invention arrangement schematic diagram in tedge；
Fig. 5 is another schematic diagram that constant-current stabilizer of the present invention is arranged in tedge.
Fig. 6 is that constant-current stabilizer of the present invention arranges cross-sectional view in tedge.
Fig. 7 is the structural schematic diagram of the two-phase flow tube shell type heat exchanger in background technique.
In figure：1, upper drum, 2, lower drum, 3, tedge, 4, constant-current stabilizer, 41 shells, 42 holes, 43 structural members, 5,
Down-comer, 6 down-comers, 7 lower drums, 8 tedges, 9 tedges, 10 fire box, 11 outlet headers, 12 flues.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
Herein, if without specified otherwise, it is related to formula, "/" indicates that division, "×", " * " indicate multiplication.
A kind of steam boiler as described in Figure 1, including upper drum 1 and lower drum 2, the tedge 3 and down-comer 5 connect
Upper drum 1 and lower drum 2.Water enters in down-comer 5 from upper drum 1.Water flows downward in the downcomer, and is collected in and cooks
In cylinder 2.The tedge 3 of boiler is heated by the burning of fuel in fire box 10.Made in pipe by the heat that tedge 3 absorbs
Liquid boiling, thus generate the two-phase mixture of water and vapour.Two-phase mixture in tedge 3 reaches upper drum 1.From upper pot
Water supplying pipe in cylinder 1（It is not shown）The subcooled water of releasing and the saturated liquid released from separator mix to be formed
Cold liquid, subcooled liquid flow out upper drum 1 and enter down-comer 5, just complete a flow circuit according to such process.
The further steam boiler of another embodiment as described in Figure 2, including upper drum 1 and lower drum 2, the rising
Pipe 3 and down-comer 5 connect upper drum 1 and lower drum 2.Water enters steam-generating bank of being heated in smokejack 12 in furnace from upper drum 1
In down-comer 5.Water flows downward in the downcomer, and is collected in lower drum 2.Since down-comer 5 absorbs heat, so
The temperature for entering the water in lower drum 2 increases.According to the number of absorbed heat, the water in lower drum 2 can be supercooling or
Person's saturation.Leave the fluid of lower drum 2（General steam water interface）A part flows upwardly into the tedge 3 of steam-generating bank.
The liquid for flowing upwardly into tedge 3 absorbs heat and enters upper drum 1.
The fluid a part for leaving lower drum 2 reaches burner hearth lower drum 7 by down-comer 6.Enter the liquid of a lower drum 7
Body is distributed in each boiler tube 8 being connected with the lower drum 7.Boiler tube is heated by the burning of fuel in fire box 10.By furnace
The heat that pipe 8 absorbs makes the liquid boiling in boiler tube 8, thus generates the two-phase mixture of water and vapour.Two-phase mixtures in boiler tube 8
Object or the boiler tube 8 by being directly connected to upper drum 1 reach upper drum 1, the namely tedge of boiler tube 8 at this time, Huo Zhe
Outlet header 11 be arranged in lower drum 7 and upper drum 1 so far, by intermediate tedge 9 by two-phase mixture from burner hearth circuit out
Mouth header 11 is transmitted to upper drum 1.Inside separator in upper drum 1 separates two-phase mixture into vapour and water.From upper
Water supplying pipe in drum 1（It is not shown）The subcooled water of releasing and the saturated liquid released from separator mix to be formed
Subcooled liquid, subcooled liquid flow out upper drum 1 and enter down-comer 5, just complete a flow circuit according to such process.
The steam-generating bank of steam boiler, the selected burner hearth furnace wall washed away by combustion-gas flow and convection current furnace wall are come
Say, it is desirable that guarantee a critical inputs heat so that fluid in tube bank and convection current furnace wall circuit in all pipe sufficiently to
Upper circulation and the unstability that will not occur flowing.
Constant-current stabilizer 4, the constant-current stabilizer 4 such as Fig. 3 are set in the tedge 3 and/or tedge 8 and/or tedge 9
Shown, the constant-current stabilizer 4 includes core and shell 41, and the core is arranged in shell 41, in the shell and tedge
Wall is connected and fixed, and the core is the integral structure part 43 extended along outer cover length direction, is provided on the structural member
A number of through hole 42.
Porous type constant-current stabilizer is arranged in the present invention in tedge, by porous type constant-current stabilizer by the liquid in two-phase fluid
It is mutually separated with vapour phase, liquid phase is divided into small liquid group, vapour phase is divided into minute bubbles, avoid dividing completely for liquid phase and vapour phase
It opens, promotes liquid vapor phase smooth outflow, play the role of regime flow, have the effect of vibration and noise reducing.It is steady relative to multitube
Device is flowed, further increases steady flow result, augmentation of heat transfer, and be simple to manufacture.
Mentioned tedge below, is all at least one of tedge 3, tedge 8 and tedge 9.
The present invention is equivalent in tedge 3 by setting porous type constant-current stabilizer and increases interior heat exchange area, enhanced
Heat exchange, improves heat transfer effect.
The present invention is because all cross-section locations by vehicle repair major in tedge 3 are divided, thus on entire
The segmentation of liquid-vaqor interface and vapour phase boundary layer and the contact area of cooling wall are realized on riser cross section and enhances disturbance, significantly
Reduce noise and vibration, enhance heat transfer.
Preferably, the through hole is round, the distance between adjacent through hole center of circle L1>2R, wherein R is perforation
Pore radius.
Pass through the distance between through hole center of circle L1>2R, so that maintained a certain distance between adjacent through hole 42, from
And guarantees each hole and preferably separate two phase flow fluid.
Preferably, the core is the structural member that integration is processed.By the way that porous core is arranged, can to make
It makes simple.
Preferably, aperture is arranged between adjacent through hole 42 realizes perforation.By the way that aperture is arranged, it is ensured that adjacent
It is interconnected between through hole, pressure that can uniformly between through hole, so that the fluid of high pressure runner flows to low pressure, while
Liquid phase and vapour phase can further be separated while fluid flows, be conducive to further stablize two-phase flow.
Preferably, along the flow direction of fluid in tedge 3（That is the short transverse of Fig. 3）, setting is more in tedge 3
A constant-current stabilizer 4, from the entrance of tedge to the outlet of tedge, the distance between adjacent constant-current stabilizer is shorter and shorter.If away from
It is H with a distance from tube inlet from rising, the spacing between adjacent constant-current stabilizer is S, S=F1(H), i.e. S is using distance H as variable
Function, S ' are the first order derivatives of S, meet following require：
S’<0;
Main cause is that carrier's liquid is understood in uphill process because of the steam in tedge, in uphill process, on
Riser is constantly heated, and causes the steam in biphase gas and liquid flow more and more, because the vapour phase in stream-liquid two-phase flow is more and more,
Exchange capability of heat in tedge can increase with vapour phase and weaken relatively, and vibration and its noise also can be continuous with vapour phase increase
Increase.Therefore the distance between the adjacent constant-current stabilizer for needing to be arranged is shorter and shorter.
In addition, this section of outlet header 11 is exported to from tedge 8, also from tedge 9 and 3 to this section of upper drum 1,
Because the space of this section becomes larger suddenly, the variation in space will lead to quickly flowing upwards out and assemble for gas, therefore space becomes
Change the vapour phase that will lead to aggregation（Vapour group）Enter condensation collector from tedge position, due to gas（Vapour）Liquid density contrast, air mass leave
Adapter tube position will move rapidly upward, and air mass original spatial position is pushed away the liquid of wall surface while will also be sprung back rapidly simultaneously by air mass
Wall surface is hit, impingement phenomenon is formed.Gas（Vapour）Liquid phase is more discontinuous, and air mass aggregation is bigger, and water hammer energy is bigger.Impingement phenomenon meeting
Biggish noise vibration and mechanical shock are caused, equipment is damaged.Therefore it in order to avoid the generation of this phenomenon, sets at this time
The distance between the adjacent constant-current stabilizer set is shorter and shorter, thus constantly separate gas phase and liquid phase in fluid delivery process,
To reduce vibration and noise to the full extent.
It is found through experiments that, by above-mentioned setting, can both reduce vibration and noise to the full extent, while can mention
High heat transfer effect.
Further preferably, from the entrance of tedge to the outlet of tedge, the distance between adjacent constant-current stabilizer is increasingly
Short amplitude is continuously increased.That is S " is the second derivative of S, meets following require：
S”>0;
It is found through experiments that, by being improved simultaneously so set, 9% or so vibration and noise can be further decreased
7% or so heat transfer effect.
Preferably, the length of each constant-current stabilizer 4 remains unchanged.
Preferably, other than the distance between adjacent constant-current stabilizer 4, constant-current stabilizer others parameter（Such as length,
Caliber etc.）It remains unchanged.
Preferably, along the flow direction for rising tube fluid（Fluid is flowed to upper direction）, the interior setting of tedge
Multiple constant-current stabilizers 4, from the entrance of tedge to the outlet of tedge, the length of constant-current stabilizer 4 is increasingly longer.That is constant-current stabilizer
Length be C, C=F2(X), C ' is the first order derivative of C, meets following require：
C’>0;
Further preferably, from the entrance of tedge to the outlet of tedge, the increasingly longer amplitude of the length of constant-current stabilizer
It is continuously increased.That is C " is the second derivative of C, meets following require：
C”>0;
The variation of the distance between for example adjacent constant-current stabilizer of specific reason is identical.
Preferably, the distance between adjacent constant-current stabilizer remains unchanged.
Preferably, the length in addition to constant-current stabilizer is outside one's consideration, constant-current stabilizer others parameter（Such as adjacent spacing, caliber
Deng）It remains unchanged.
Preferably, along the flow direction for rising tube fluid（I.e. along tedge extending direction）, set in tedge
Multiple constant-current stabilizers are set, from the entrance of tedge to the outlet of tedge, the diameter of the through hole 42 in different constant-current stabilizers 4 is got over
Come smaller.I.e. the perforation bore dia of constant-current stabilizer is D, D=F3(X), D ' is the first order derivative of D, meets following require：
D’<0;
Preferably, the perforation bore dia of constant-current stabilizer is smaller and smaller from the entrance of tedge to the outlet of tedge
Amplitude is continuously increased.I.e.
D " is the second derivative of D, meets following require：
D”>0。
The variation of the distance between for example adjacent constant-current stabilizer of specific reason is identical.
Preferably, the length of constant-current stabilizer and the distance of adjacent constant-current stabilizer remain unchanged.
Preferably, other than the perforation bore dia of constant-current stabilizer, constant-current stabilizer others parameter（Such as it is length, adjacent
The distance between constant-current stabilizer etc.）It remains unchanged.
Further preferably, as shown in figure 4, groove is arranged inside the tedge, the shell 41 of the constant-current stabilizer 4 is arranged
In groove.
Preferably, the inner wall of shell 41 and the aligning inner of tedge.By alignment, so that tedge inner wall surface
On reach in the same plane, guarantee the smooth of surface.
Preferably, the thickness of shell 41 is less than the depth of groove, tedge inner wall can be made to form groove in this way,
To carry out augmentation of heat transfer.
Further preferably, as shown in figure 5, tedge is welded for multi-segment structure, the junction setting of multi-segment structure is steady
Flow device 4.This mode makes being simple to manufacture for the tedge that constant-current stabilizer is arranged, and cost reduces.
It is learnt by analyzing and testing, the spacing between constant-current stabilizer cannot be excessive, leads to damping noise reduction if excessive
Effect it is bad, while can not be too small, cause resistance excessive if too small, similarly, the outer diameter of through hole can not it is excessive or
Person is too small, and the effect for also resulting in damping noise reduction is bad or resistance is excessive, therefore the present invention is through a large number of experiments, preferential
Meet normal flow resistance（Total pressure-bearing be 2.5Mpa hereinafter, the on-way resistance of single riser be less than or equal to 5Pa/M）
In the case where, so that being optimal of damping noise reduction, has arranged the optimal relationship of parameters.
Spacing between adjacent constant-current stabilizer is S, and the length of constant-current stabilizer is C, and the outer diameter of tedge is W, constant-current stabilizer
Perforation bore dia be D, meet following require：
Preferably, the distance between adjacent constant-current stabilizer is S, the length of constant-current stabilizer is C, and the outer diameter of heat exchanger tube is W,
The radius of through hole is R, the distance between adjacent through hole center of circle L1, meets following require：
S/C=a-b*LN (W/（2*R）)；
L1/（2*R） =c*(W/（2*R）)-d*(W/（2*R）)2-e
Wherein LN is logarithmic function, and a, b, c, d, e is parameter, wherein 3.0<a<3.5,0.5<b<0.6；2.9<c<3.1,
0.33<d<0.37,4.8<e<5.3；
Wherein the interval S of constant-current stabilizer is the both ends the distance between opposite with adjacent constant-current stabilizer；I.e. front current stabilization fills
The distance between the front end of the tail end set and constant-current stabilizer below.Referring specifically to the mark of Fig. 4.
34<W<58mm；
4<R<6mm;
17<C<25mm；
32<S<40mm；
1.05<L1/（2*R）<1.25.
Preferably, a=3.20, b=0.54, c=3.03, d=0.35, e=5.12.
Preferably, rising length of tube L between 3000-8500mm.Further preferably, between 4500-5500mm.
Further preferably, 40mm<W<50mm；
9mm<2R<10mm;
22mm<C<24mm；
35mm<S<38mm。
By the preferred of the optimal geometric scale of above-mentioned formula, can be realized under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
Further preferably, as the increase of W/R, a constantly reduce, b constantly increases.
For parameters such as other parameters, such as tube wall, shell wall thickness according to normal standard setting.
Preferably, through hole 42 extends in the whole length direction of constant-current stabilizer 4.I.e. the length of through hole 42 is equal to steady
Flow the length of device 4.
Preferably, correction factor c can be increased to data when the angle that tedge and horizontal plane are formed is A
It is modified, i.e.,
C*S/C=a-b*LN (W/D)；c=1/sin(A)d, wherein 0.09<d<0.11, preferably d=0.10.
20°<A<80 °, preferably 40-60 °.
Although the present invention has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology
Personnel can make various changes or modifications, therefore protection scope of the present invention is answered without departing from the spirit and scope of the present invention
When being defined by the scope defined by the claims..
Claims (2)
1. a kind of steam boiler, including upper drum and lower drum and the tedge being connected between upper drum and lower drum and decline
Pipe, which is characterized in that constant-current stabilizer is set in the tedge, the multiple constant-current stabilizers of setting in same root tedge, along upper
Fluid flow direction in riser, the spacing between adjacent constant-current stabilizer constantly reduce；
Along the fluid flow direction of tedge, the ever-reduced amplitude of spacing between adjacent constant-current stabilizer is increasing；
The constant-current stabilizer includes core and shell, and in the shell, the shell is connect with inside pipe wall is risen for the core setting
Fixed, the core is the integral structure part extended along outer cover length direction, is provided on the structural member a number of
Through hole；The through hole is round, the distance between adjacent through hole center of circle L1>2R, wherein R is perforation pore radius.
2. steam boiler as described in claim 1, which is characterized in that groove, the current stabilization dress is arranged in the rising inside pipe wall
The shell set is arranged in groove, the inner wall of the shell and the aligning inner of tedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266633.0A CN107084381B (en) | 2017-04-21 | 2017-04-21 | A kind of damping steam boiler |
Applications Claiming Priority (1)
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| CN111911901A (en) * | 2018-06-27 | 2020-11-10 | 青岛鑫众合贸易有限公司 | Steam generation system intelligently controlled according to water level |
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| CN108895424B (en) * | 2017-04-18 | 2020-03-17 | 青岛吉云德和商贸有限公司 | Design method of inclined multi-tube steam boiler |
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