CN107218621B - A kind of preheater of tool compensator protection structure - Google Patents
A kind of preheater of tool compensator protection structure Download PDFInfo
- Publication number
- CN107218621B CN107218621B CN201710595147.3A CN201710595147A CN107218621B CN 107218621 B CN107218621 B CN 107218621B CN 201710595147 A CN201710595147 A CN 201710595147A CN 107218621 B CN107218621 B CN 107218621B
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- Prior art keywords
- compensator
- heat exchange
- frame
- exchange unit
- stainless steel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/007—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2400/00—Pretreatment and supply of gaseous fuel
- F23K2400/10—Pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2900/00—Special features of, or arrangements for fuel supplies
- F23K2900/01041—Heating by using exhaust gas heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/15043—Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention discloses a kind of preheater of tool compensator protection structure; it further include the stainless steel protection plate that heat transmitting and substance contact are reduced for sheltering from compensator including frame, the heat exchange unit being arranged in frame and the compensator for being separately connected frame and heat exchange unit.The preheater is by being arranged in heat transfer to compensator of the stainless steel protection plate to reduce heat source gas; and it is contacted come the corrosive substance in blocking heat source gas with compensator by stainless steel protection plate; to extend the service life of compensator to reach the protection to compensator.
Description
Technical field
The present invention relates to preheater fields, more particularly to the preheater of tool compensator protection structure.
Background technique
There are many hot-blast stoves, heating furnace, combustion furnace, boiler to generate a large amount of flue gas, flue gas temperature in industries such as metallurgy, electric power
Degree is also relatively high, if a large amount of heat will be wasted by directly falling flue gas emission, for the heat in recovered flue gas, generally
Heat in flue gas is transferred on air, coal gas required for these furnaces burn by ground using preheater, after air, gas preheating
Temperature increases, and ignition temperature also increases accordingly, and can thus save fuel, reduces production cost.
The dedicated rectangular interface FlexbleJoint of a kind of existing plate type air, gas preheater, structure include four sections
Straight flange ripple and end are separately connected the four arcs ripple of straight flange corrugation end two-by-two, constitute frame like structure, straight flange ripple and
The truncation surface of circular arc ripple be corrugated, installation when frame like structure two sides be respectively interface respectively with the frame of preheater and
Heat exchanger fin welding.
Range of temperature is larger in equipment when preheater uses, and needs to compensate heat exchanger fin and shell using compensator
Swell increment difference, since heat exchange medium temperature range is big, the structure of corrosivity and existing compensator designs disadvantage, there are also existing
Compensator use do not take safeguard measure, have in use some existing compensators prematurely occur cracking, corrosion phenomenon,
Compensator service life is short.
Connection dimension error is big when existing compensator assembly, and welding stress is big, due to the circular arc ripple of existing compensator
Production is that straight flange ripple is bent again and is formed, and circular arc ripple and straight flange ripple butting error are up to 2-5mm, and docking is caused to miss
Poor big, welding difficulty is big, and weld seam is thick, and weld seam meets with stresses excessive, and compensation performance is bad.Circular arc ripple forming is flexible excessively, easily
Cracking.Bending radius 100mm on the inside of circular arc ripple, bending curvature is excessive, and causing material to be thinned, excessive, stress is excessive easy to crack,
Direct wave ripple welds insufficient space, influences welding quality away from less than normal.
Summary of the invention
The purpose of the present invention is to provide a kind of preheaters of tool compensator protection structure, effectively improve above-mentioned existing
The problem of technology, extends the service life of compensator.
To achieve the above object, the technical scheme is that a kind of tool compensator protects the preheater of structure, including frame
Frame, the heat exchange unit being arranged in frame and the compensator for being separately connected frame and heat exchange unit further include mending for sheltering from
Repay the stainless steel protection plate that device reduces heat transmitting and substance contact.
The compensator includes four sections of straight flange ripples and four arcs ripple, and the truncation surface of straight flange ripple and circular arc ripple is
Corrugated, the both ends of the circular arc ripple are also extended with straight section respectively, the circular arc ripple by straight section respectively with straight flange
Corrugation end is connected, and constitutes frame like structure, and the two sides of frame like structure are respectively interface, and the frame is equipped with connector,
Two interfaces are connect with connector and heat exchange unit respectively when installation, and the stainless steel protection plate constitutes frame-shaped corresponding with compensator
Structure.
The heat exchange unit is equipped with the transition plates for connecting with the interface of compensator.
The heat exchange unit includes the low-temperature heat exchange unit with recuperated gas import and the height with recuperated gas outlet
Warm heat exchange unit passes through the benefit in outside side respectively between the low-temperature heat exchange unit and high temperature heat exchange unit and frame
Device connection is repaid, the side of the high temperature heat exchange unit connection compensator is heat source gas import, the high temperature heat exchange unit connection
The stainless steel protection plate of compensator then face is set in compensator frame like structure, the low-temperature heat exchange unit connection compensator
Side is heat source gas outlet, and the stainless steel protection plate of the compensator of the low-temperature heat exchange unit connection is arranged in compensator frame-shaped
The lateral surface of structure.
A side edge for being connected to the stainless steel protection plate in then face in compensator frame like structure is connected by removable mode
It connects and is equipped on frame on the connector for being connect with compensator, company of another side close to heat exchange unit and compensator interface
It the place of connecing but is not fixedly connected with heat exchange unit；Connect a side of the stainless steel protection plate of another compensator frame like structure lateral surface
Along being fixedly connected on along the heat exchange unit of heat exchange unit and compensator junction, other side edge close to frame but not with frame
It is fixedly connected.
The stainless steel protection plate and connector are connected by removable mode to be distributed admittedly on the specially described connector
Surely it is equipped with screw rod, each screw rod is corresponded on the stainless steel protection plate and offers through-hole, when installation is screwed togather by screw rod across through-hole
Top nut locks.
The stainless steel protection plate is fixedly connected on the mode on heat exchange unit and is fixedly connected using being broken.
By using above-mentioned technical proposal, the beneficial effects of the present invention are: reducing heat by setting stainless steel protection plate
In the heat transfer to compensator of source gas, and by stainless steel protection plate come the corrosive substance and benefit in blocking heat source gas
Device contact is repaid, so as to reach the protection to compensator, its circular arc ripple of the structure of above-mentioned compensator is increased and straight flange ripple
Corresponding straight section, straight flange ripple and the curved ripple of circular arc may be implemented accurately to dock, and improve welding quality, operate convenient for welding,
When compensator is manufactured, the pitch of waves of ripple can expand convenient for welding operation, and increasing wave height can reduce when compensator is pressurized
Internal stress increases the bending radius of circular arc ripple, and reducing the rate of curving reduces the deformation extent (wave height/bending of curved ripple forming
Radii ratio), reduce moulding stress.
In one layer of stainless steel protection plate of inside setting of its frame like structure of the compensator of heat source gas import, which is protected
Heat source gas amount is small in gap between backplate and compensator, and almost static, heat output very little, thus temperature on the inside of compensator
Close to the gas temperature in outside, the yield strength of stainless steel is higher, therefore compensator is hardly damaged.Heat source gas outlet compensator
Outside one layer of stainless steel protection plate is set, cold medium amount is small and several in the gap between the stainless steel protection plate and compensator
Static, heat output very little, can also block the overwhelming majority has corrosive droplet, thus compensator temperature outside is close
Outer surface will not condense when the flue-gas temperature of inside, outer surface again will not contact corrosion moisture, avoid corrosion and damage, outside
Side can be oven-dried a small amount of moisture enters between stainless steel protection plate and compensator.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the preheater of tool compensator protection structure of the present invention.
In Fig. 2 Fig. 1 A-A to sectional view.
The sectional view of B-B direction in Fig. 3 Fig. 1.
Fig. 4 and Fig. 5 is the structural representation of compensator in a kind of preheater of tool compensator protection structure of the present invention
Figure.
In figure:
Frame 1；Connector 11；
Heat exchange unit 2；Low-temperature heat exchange unit 21；Recuperated gas import 211；Heat source gas outlet 212；
High temperature heat exchange unit 22；Recuperated gas outlet 221；Heat source gas import 222；
Heat exchanger fin channel 23；End plate 24；
Compensator 3；Straight flange ripple 31；Circular arc ripple 32；Straight section 321；
Interface 33；Transition plates 34；Stainless steel protection plate 4.
Specific embodiment
In order to further explain the technical solution of the present invention, to carry out the present invention below by a kind of specific embodiment detailed
It is thin to illustrate.
A kind of preheater of tool compensator protection structure, specially plate type air, gas preheater disclosed in the present embodiment,
As Figure 1-Figure 5, including frame 1, the heat exchange unit being arranged in frame 12 and frame 1 and heat exchange unit 2 are separately connected not
The compensator 3 for steel material of becoming rusty, the heat exchange unit 2 are usually made of the combination of multiple heat exchanger fin channels 23, multiple heat exchanger fin channels
23 sides are linked together by end plate 24, and heat exchange unit 2 is connect with frame 1 and heat exchange unit 2 to be connected on end plate 24, this
Invention and the difference of existing preheater with further include having to reduce heat transmitting and substance contact for sheltering from compensator 3
Stainless steel protection plate 4.In figure, the heat exchange unit 2 includes the low-temperature heat exchange unit 21 and tool with recuperated gas import 211
Have a high temperature heat exchange unit 22 of recuperated gas outlet 221, the low-temperature heat exchange unit 21 and high temperature heat exchange unit 22 and frame 1 it
Between connected respectively in outside side by the compensator 3, the left and right sides in figure as shown in Figure 1, the high temperature
The side that heat exchange unit 22 connects compensator 3 is heat source gas import 222, and the stainless steel protection plate 4 of the side is arranged in compensator 3
The interior then face of frame like structure, as shown in Fig. 2, the side of the low-temperature heat exchange unit 21 connection compensator 3 is heat source gas outlet
212, the lateral surface of 3 frame like structure of compensator is arranged in the stainless steel protection plate 4 of the side, as shown in Figure 3.
The working gas flow direction that exchanges heat combines diagram referring to arrow direction in figure, heat source gas (flue gas) when preheater uses
The inside temperature of 3 its frame like structure of compensator of import is typically up to 300-400 DEG C, it is so high at a temperature of the stainless steels such as 316L
Yield strength decline is obvious, is easy to be destroyed under the effect of 3 internal stress of compensator.In the compensator 3 of heat source gas import
One layer of stainless steel protection plate 4, heat in the gap between the stainless steel protection plate 4 and compensator 3 is arranged in the inside of its frame like structure
The source gas scale of construction is small, and almost static, heat output very little, thus the recuperated gas in 3 inside temperature of compensator close to outside is (i.e. empty
Gas, coal gas) temperature when being usually 200 DEG C, 200 DEG C 300-400 DEG C of the performances ratio such as yield strength of stainless steel be substantially higher, therefore
Compensator 3 is hardly damaged.
Heat source gas (i.e. air, coal gas) outlet 3 its frame like structure of compensator inside temperature about at 150-210 DEG C,
Outside air, 0-60 DEG C of cold medium of coal gas (recuperated gas).One side Cryogenic air, coal gas will lead to compensator other side 140-
200 DEG C of heat source gas has the possibility of supercooling dewing corrosion, and on the other hand the low temperature coal gas humidity in outside is big, chloride ion-containing,
The environment of the outer surface of 3 its frame like structure of compensator humidity easy to form, the stress of receiving, meeting in addition compensator itself is pressurized
Form intercrystalline corrosion and stress corrosion to a certain extent.Lead to heat source gas moisture condensation, the cold ring for surveying humidity in too low temperature
Border, inherent strain act on lower compensator and easily corrode cracking.In the outside of heat source gas outlet compensator 3, one layer of stainless steel is set
Protection board 7.Cold medium amount is small in gap between the stainless steel protection plate 7 and compensator 3, and almost static, heat output very little,
Can also block in coal gas it is most there is corrosive droplet, thus compensator temperature outside is close to the flue gas temperature of inside
140-200 DEG C of degree.Outer surface will not condense at 140-200 DEG C, outer surface again will not contact corrosion moisture, avoid corrosion
Damage, though a small amount of moisture in outside enter between stainless steel protection plate 7 and compensator 3 as 140-200 DEG C of environment and
Drying.Therefore, after being additionally arranged stainless steel protection plate 4, compensator 3 can be effectively protected, is prolonged its service life.
The present embodiment, further, as shown in figure 4, the compensator 3 includes four sections of straight flange ripples 31 and four arcs ripple
32, the truncation surface of straight flange ripple 31 and circular arc ripple 32 is corrugated, as shown in figure 5, the both ends of the circular arc ripple 32 are distinguished
It is also extended with straight section 321, the circular arc ripple 32 is connected with 31 end of straight flange ripple respectively by straight section 321, is constituted
Frame like structure, the two sides of frame like structure are respectively interface 33, and the frame 1 is equipped with connector 11, two interfaces 33 when installing
It is connect respectively with connector 11 and heat exchange unit 2, the circular arc ripple 32 of the structure increases straight flange corresponding with straight flange ripple 31
Section 321, straight flange ripple 31 and the curved ripple 32 of circular arc may be implemented accurately to dock, and improve welding quality, convenient for welding operation, compensation
When device 3 is manufactured, the pitch of waves of ripple can expand the inside for increasing wave height convenient for welding operation when can reduce compensator compression
Stress increases the bending radius of circular arc ripple, and reducing the rate of curving reduces the deformation extent (wave height/bending radius of curved ripple forming
Ratio), reduce moulding stress, specific numerical value is pressed than setting according to 3 actual size of compensator, do not further limited here.It mends
Repaying device 3 is frame like structure, therefore the stainless steel protection plate 4 should constitute frame like structure corresponding with compensator 3, could be preferable
It plays and blocks protective effect.
For convenience of staff's maintenance, leakage detection and the compensating action effect for not influencing compensator, described in the present embodiment not
The installation of rust steel protection board 4 can be further arranged, and be connected in 3 frame like structure of compensator that then the stainless steel protection plate 4 in face (exists
222 side stainless steel protection plate 4 of heat source gas import) a side be equipped with along being connected to frame 1 by removable mode
For on the connector 11 that is connect with compensator 3 because stainless steel protection plate 4 blocked compensator 3, when overhauling leakage detection, need
Compensator 3 can just be exposed by disassembling, therefore be arranged to removable structure, can facilitate operation, concretely the connector
Distribution is fixed with screw rod on 11, and each screw rod is corresponded on the stainless steel protection plate 4 and offers through-hole, and when installation is worn by screw rod
It crosses through-hole and screws togather top nut and lock, and another side of stainless steel protection board 4 is close to the company of heat exchange unit 2 and 3 interface of compensator
The place of connecing but be not fixedly connected with heat exchange unit 2 because not being fixedly connected, will not interference inverter compensation when spreading deformation；
The stainless steel protection plate 4 for connecting another 3 shape structure lateral surface of compensator frame (exports 212 side stainless steels in heat source gas to protect
Backplate 4) a side along being fixedly connected on along the heat exchange unit 2 of heat exchange unit 2 and 3 junction of compensator, other side edge
Close to frame 1 but not being fixedly connected with frame 1, due to stainless steel protection plate 4 do not block compensator 3 not and influence leakage detection maintenance because
This can not have to remove, and be directly fixedly connected with setting and can be used to be broken and be fixedly connected, and another side is because be fixedly connected, will not
Spreading deformation when interference inverter compensates.
Further, the heat exchange unit 2 is equipped with the transition plates 34 for connecting with the interface 33 of compensator 3, such as Fig. 2 and figure
3 structures for heat exchanger fin and compensator corner connection gap it is big when graded seal, if certainly gap hour can directly weld without
With adding transition plates 34.
The preheater of above structure is gradually used in blast-furnace hot-air stove air, gas preheating system, and boiler power generation coal gas adds
The fields such as hot systems.Plate type preheater of the later intended application in fields such as coal chemical industry, petrochemical industry, chemical industry compensates field.
Above-described embodiment and schema and non-limiting product form and style of the invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as not departing from patent category of the invention.
Claims (6)
1. a kind of preheater of tool compensator protection structure, including frame, the heat exchange unit being arranged in frame and is separately connected
The compensator of frame and heat exchange unit, it is characterised in that: further include reducing heat transmitting and substance contact for sheltering from compensator
Stainless steel protection plate；
The compensator includes four sections of straight flange ripples and four arcs ripple, and the truncation surface of straight flange ripple and circular arc ripple is ripple
Shape, the both ends of the circular arc ripple are also extended with straight section respectively, the circular arc ripple by straight section respectively with straight flange ripple
End is connected, and constitutes frame like structure, and the two sides of frame like structure are respectively interface, and the frame is equipped with connector, installation
When two interfaces connect respectively with connector and heat exchange unit, the stainless steel protection plate constitutes frame-shaped knot corresponding with compensator
Structure.
2. a kind of preheater of tool compensator protection structure as described in claim 1, it is characterised in that: on the heat exchange unit
Equipped with the transition plates for being connect with the interface of compensator.
3. a kind of preheater of tool compensator protection structure as claimed in claim 2, it is characterised in that: the heat exchange unit packet
Include the low-temperature heat exchange unit with recuperated gas import and the high temperature heat exchange unit with recuperated gas outlet, the low-temperature heat exchange
It is connected respectively in outside side by the compensator between unit and high temperature heat exchange unit and frame, the high temperature heat exchange is single
The side of member connection compensator is heat source gas import, and the stainless steel protection plate of the compensator of the high temperature heat exchange unit connection is set
It sets in compensator frame like structure medial surface, the side of the low-temperature heat exchange unit connection compensator is heat source gas outlet, described
The lateral surface of compensator frame like structure is arranged in the stainless steel protection plate of the compensator of low-temperature heat exchange unit connection.
4. a kind of preheater of tool compensator protection structure as claimed in claim 3, it is characterised in that: be connected to compensator frame
A side of the stainless steel protection plate of shape structure medial surface is connected to frame equipped with confession and compensation along by removable mode
On the connector of device connection, another side close to heat exchange unit and compensator interface junction but do not fixed with heat exchange unit
Connection；Connect a side of the stainless steel protection plate of another compensator frame like structure lateral surface along be fixedly connected on heat exchange unit with
On the heat exchange unit of compensator junction, other side edge is close to frame but is not fixedly connected with frame.
5. a kind of preheater of tool compensator protection structure as claimed in claim 4, it is characterised in that: the stainless steel protection
Plate and connector connect distribution on the specially described connector by removable mode and are fixed with screw rod, and the stainless steel is protected
Each screw rod is corresponded on backplate and offers through-hole, through-hole passed through by screw rod when installation screws togather top nut and lock.
6. a kind of preheater of tool compensator protection structure as claimed in claim 4, it is characterised in that: the stainless steel protection
Plate is fixedly connected on the mode on heat exchange unit and is fixedly connected using being broken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595147.3A CN107218621B (en) | 2017-07-20 | 2017-07-20 | A kind of preheater of tool compensator protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595147.3A CN107218621B (en) | 2017-07-20 | 2017-07-20 | A kind of preheater of tool compensator protection structure |
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| Publication Number | Publication Date |
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| CN107218621A CN107218621A (en) | 2017-09-29 |
| CN107218621B true CN107218621B (en) | 2019-06-04 |
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| CN201710595147.3A Active CN107218621B (en) | 2017-07-20 | 2017-07-20 | A kind of preheater of tool compensator protection structure |
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|---|---|---|---|---|
| CN118623669A (en) * | 2019-08-29 | 2024-09-10 | 福建立信换热设备制造股份公司 | Plate type preheater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050955Y (en) * | 2007-06-18 | 2008-04-23 | 莫立勤 | Gas phase plate type heat exchanger |
| CN101672587B (en) * | 2009-09-28 | 2011-05-04 | 南京宜热纵联节能科技有限公司 | Gas-phase plate type heat exchanger |
| CN203500752U (en) * | 2013-09-17 | 2014-03-26 | 山东潍焦集团有限公司 | Heat exchanger outlet pipe expansion joint |
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Effective date of registration: 20230725 Address after: No. 436 Changxing North Road, Jinshayuan, Shaxian District, Sanming City, Fujian Province, 365000 Patentee after: Fujian liyixin Technology Co.,Ltd. Address before: 362000 Changtai intersection, Jiangnan high tech park, Licheng District, Quanzhou City, Fujian Province Patentee before: FUJIAN LIXIN HEAT EXCHANGE EQUIPMENT MANUFACTURING Co.,Ltd. |
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