CN206973604U - A kind of preheater compensator of improved structure - Google Patents
A kind of preheater compensator of improved structure Download PDFInfo
- Publication number
- CN206973604U CN206973604U CN201720883158.7U CN201720883158U CN206973604U CN 206973604 U CN206973604 U CN 206973604U CN 201720883158 U CN201720883158 U CN 201720883158U CN 206973604 U CN206973604 U CN 206973604U
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- CN
- China
- Prior art keywords
- compensator
- ripple
- stainless steel
- preheater
- circular arc
- Prior art date
- 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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- 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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of preheater compensator of improved structure, the frame like structure formed including four sections of straight flange ripples and four arcses ripple, the both sides of frame like structure are respectively interface, 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, and the circular arc ripple is connected with straight flange corrugation end respectively by straight section.Its circular arc ripple of the structure of above-mentioned compensator adds straight section corresponding with straight flange ripple, and straight flange ripple and the curved ripple of circular arc can realize accurate docking, improve welding quality, be easy to welding to operate, and reduce moulding stress, extend the service life of compensator.
Description
Technical field
The compensator field of preheater is the utility model is related to, is compensated more particularly to a kind of preheater of improved structure
Device.
Background technology
There are many hot-blast stoves, heating furnace, combustion furnace, boiler to produce substantial amounts of flue gas, flue gas temperature in industries such as metallurgy, electric power
Degree is also higher, if substantial amounts of heat will be wasted by directly falling fume emission, for the heat in recovered flue gas, typically
Heat in flue gas is transferred to air required for the burning of these stoves, on coal gas by ground using preheater, after air, gas preheating
Temperature raises, and ignition temperature also improves therewith, can thus save fuel, reduces production cost.
The special rectangular interface FlexbleJoint of a kind of existing plate type air, gas preheater, its structure include four sections
Straight flange ripple and end connect the four arcses ripple of straight flange corrugation end two-by-two respectively, form frame like structure, straight flange ripple and
The truncation surface of circular arc ripple is corrugated, when it is installed the both sides of frame like structure be respectively interface respectively with the framework of preheater and
Heat exchanger fin welds.
Preheater using when equipment in range of temperature it is larger, it is necessary to compensate heat exchanger fin and housing using compensator
Swell increment difference, because heat exchange medium temperature scope is big, the structure design shortcoming of corrosivity and existing compensator, in use
There are some prematurely cracking existing compensators, corrosion phenomenon, compensator service life short.
Connection dimension error is big during existing compensator assembly, and welding stress is big, due to the circular arc ripple of existing compensator
Making is that straight flange ripple is bent and is molded again, and circular arc ripple and straight flange ripple butting error are up to 2-5mm, causes docking 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 excessive, 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.
Utility model content
The purpose of this utility model is the preheater compensator for providing a kind of improved structure, and it effectively improves above-mentioned existing
There is problem present in technology, extend the service life of compensator.
To achieve the above object, the technical solution of the utility model is：A kind of preheater compensator of improved structure, including
The frame like structure that four sections of straight flange ripples and four arcses ripple are formed, the both sides of frame like structure are respectively interface, straight flange ripple and
The truncation surface of circular arc ripple is corrugated, and the both ends of the circular arc ripple are also extended with straight section respectively, and the circular arc ripple leads to
Straight section is crossed respectively with straight flange corrugation end to be connected.
The compensator is also configured with reducing the stainless steel protection plate of heat transfer and material contact for sheltering from compensator,
The stainless steel protection plate forms frame like structure corresponding with compensator.
The stainless steel protection plate is arranged on the lateral surface of compensator frame like structure.
The stainless steel protection plate is fixedly connected with the same side of compensator.
The stainless steel protection plate is arranged on the medial surface of compensator frame like structure.
The same side of the stainless steel protection plate and compensator is connected in a manner of removable.
By using above-mentioned technical proposal, the beneficial effects of the utility model are：Its arc-wave of the structure of above-mentioned compensator
Line adds straight section corresponding with straight flange ripple, and straight flange ripple and the curved ripple of circular arc can realize accurate docking, improve welding
Quality, it is easy to welding to operate, when compensator is manufactured, the pitch of waves of its ripple, which can expand, is easy to welding to operate, and increase wave height can
Reduce internal stress when compensator is pressurized, increase the bending radius of circular arc ripple, reducing the rate of curving reduces curved ripple forming
Deformation extent (wave height/bending radius ratio), reduce moulding stress, by setting stainless steel protection plate to reduce heat source gas
Heat transfer connects on compensator, and by stainless steel protection plate come the corrosive substance in blocking heat source gas with compensator
Touch, so as to reach the protection to compensator.
In one layer of stainless steel protection plate of inner side setting of its frame like structure of the compensator of heat source gas import, the stainless steel 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 approaches
Outer surface will not condense during the flue-gas temperature of inner side, outer surface again will not contact corrosion moisture, avoid corrosion and damage, outside
Side enters even if a small amount of moisture can also be oven-dried between stainless steel protection plate and compensator.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the preheater for the tool compensator protection structure that the utility model is related to.
In Fig. 2 Fig. 1 A-A to profile.
The profile of B-B direction in Fig. 3 Fig. 1.
Fig. 4 and Fig. 5 be a kind of tool compensator protection structure that the utility model is related to preheater in compensator structure
Schematic diagram.
In figure：
Framework 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 passage 23；End plate 24；
Compensator 3；Straight flange ripple 31；Circular arc ripple 32；Straight section 321；
Interface 33；Rebound 34；Stainless steel protection plate 4.
Embodiment
In order to which the technical solution of the utility model is explained further, come below by a kind of specific embodiment new to this practicality
Type is described in detail.
A kind of preheater for having compensator protection structure, specially plate type air, gas preheater disclosed in the present embodiment,
As Figure 1-Figure 5, including framework 1, the heat exchange unit 2 that is arranged in framework 1 and respectively connection framework 1 with heat exchange unit 2 not
The compensator 3 for steel material of becoming rusty, the heat exchange unit 2 are generally made up of the combination of multiple heat exchanger fin passages 23, multiple heat exchanger fin passages
23 sides are linked together by end plate 24, and heat exchange unit 2 is connected with framework 1 and heat exchange unit 2 to be connected on end plate 24, this
Utility model and the difference of existing preheater are with also including and reducing heat transfer and material for sheltering from compensator 3
The stainless steel protection plate 4 of contact.In figure, the heat exchange unit 2 includes the low-temperature heat exchange unit 21 with recuperated gas import 211
With the high temperature heat exchange unit 22 with recuperated gas outlet 221, the low-temperature heat exchange unit 21 and high temperature heat exchange unit 22 and frame
Connected respectively in outside side by the compensator 3 between frame 1, the left and right sides in figure, described as shown in Figure 1
The side that high temperature 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 on benefit
The interior then face of the frame like structure of device 3 is repaid, 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 stainless steel protection plate 4 of the side is arranged on the lateral surface of the frame like structure of compensator 3, as shown in Figure 3.
Heat exchange working gas flows to the direction of arrow in reference picture and combines diagram, heat source gas (flue gas) when preheater uses
The inner side temperature of its frame like structure of the compensator 3 of import is typically up to 300-400 DEG C, the stainless steel such as 316L at so high temperature
Yield strength declines substantially, is easily destroyed under the effect of the internal stress of compensator 3.In the compensator 3 of heat source gas import
The inner side of its frame like structure sets one layer of stainless steel protection plate 4, heat in the gap between the stainless steel protection plate 4 and compensator 3
Source gas flow is small, and almost static, heat output very little, thus recuperated gas of the inner side temperature of compensator 3 close to outside is (i.e. empty
Gas, coal gas) temperature when being usually 200 DEG C, 200 DEG C the performance such as yield strength of stainless steel be substantially higher than 300-400 DEG C, therefore
Compensator 3 is hardly damaged.
The inner side temperature of compensator 3 its frame like structure of heat source gas (i.e. air, coal gas) outlet about at 150-210 DEG C,
Outside air, 0-60 DEG C of coal gas (recuperated gas) cold medium.One side Cryogenic air, coal gas can cause compensator opposite side 140-
200 DEG C of heat source gas has the possibility of supercooling dewing corrosion, on the other hand the low temperature coal gas high humidity in outside, chloride ion-containing,
The outer surface of its frame like structure of compensator 3 easily forms the environment of humidity, and be pressurized the stress born in itself plus compensator, meeting
Form intercrystalline corrosion and stress corrosion to a certain extent.Cause heat source gas condensation, the cold ring for surveying humidity in too low temperature
Border, the lower easy corrosion cracking of compensator of inherent strain effect.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 inner side
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 stainless steel protection plate 4 is additionally arranged, compensator 3 can be effectively protected, extends 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 arcses 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 difference of the circular arc ripple 32
Straight section 321 is also extended with, the circular arc ripple 32 is connected with the end of straight flange ripple 31 respectively by straight section 321, is formed
Frame like structure, the both sides of frame like structure are respectively interface 33, and the framework 1 is provided with connector 11, two interfaces 33 when it is installed
It is connected respectively with connector 11 and heat exchange unit 2, the circular arc ripple 32 of the structure adds and 31 corresponding straight flange of straight flange ripple
Section 321, straight flange ripple 31 and the curved ripple 32 of circular arc can realize accurate docking, improve welding quality, be easy to welding to operate, compensation
When device 3 is manufactured, the pitch of waves of its ripple, which can expand, is easy to welding to operate, and increase wave height can reduce inside when compensator is pressurized
Stress, increase the bending radius of circular arc ripple, 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 the actual size of compensator 3, do not limited further here.Mend
It is frame like structure to repay device 3, thus the stainless steel protection plate 4 should form with 3 corresponding frame like structure of compensator, could be preferably
Play and block protective effect.
For convenience of staff's maintenance, leakage detection and the compensating action effect for not influenceing compensator, described in the present embodiment not
The installation of rust steel protection board 4 can further be set, and be connected in the frame like structure of compensator 3 that then the stainless steel protection plate 4 in face (exists
The side stainless steel protection plate 4 of heat source gas import 222) side edge framework 1 be connected to by removable mode be provided with
For on the connector 11 that is connected 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 conveniently be operated, 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, is worn by screw rod during installation
Cross through hole and screw togather top nut and lock, and 4 another side of stainless steel protection board is close to the company of heat exchange unit 2 and the interface of compensator 3
The place of connecing but it is not fixedly connected with heat exchange unit 2, because not being fixedly connected, spreading deformation when being compensated without interference with compensator；
The stainless steel protection plate 4 of another shape structure lateral surface of compensator frame 3 is connected (i.e. in the side stainless steel guarantor of heat source gas outlet 212
Backplate 4) side edge be fixedly connected on the heat exchange unit 2 of heat exchange unit 2 and the junction of compensator 3, its opposite side edge
Close to framework 1 but not being fixedly connected with framework 1, due to stainless steel protection plate 4 do not block compensator 3 do not influence leakage detection maintenance because
This can not have to remove, and being directly fixedly connected with setting can use disconnected weldering 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 provided with the rebound 34 for being connected with the interface 33 of compensator 3, such as Fig. 2 and figure
3 structures be used for heat exchanger fin and compensator corner connection gap it is big when graded seal, if certainly gap hour can directly weld without
With setting up rebound 34.
The preheater of said structure is progressively used in blast-furnace hot-air stove air, gas preheating system, and boiler generating 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 of the present utility model and style, any art
The appropriate change or modification that those of ordinary skill is done to it, all should be regarded as not departing from patent category of the present utility model.
Claims (6)
1. a kind of preheater compensator of improved structure, including the frame-shaped knot that four sections of straight flange ripples and four arcses ripple are formed
Structure, the both sides of frame like structure are respectively interface, and the truncation surface of straight flange ripple and circular arc ripple is corrugated, it is characterised in that：Institute
The both ends for stating circular arc ripple are also extended with straight section respectively, the circular arc ripple by straight section respectively with straight flange corrugation end phase
Connection.
A kind of 2. preheater compensator of improved structure as claimed in claim 1, it is characterised in that：The compensator also configures
There is the stainless steel protection plate that heat transfer and material contact are reduced for sheltering from compensator, the stainless steel protection plate is formed and mended
Repay the corresponding frame like structure of device.
A kind of 3. preheater compensator of improved structure as claimed in claim 2, it is characterised in that：The stainless steel protection plate
It is arranged on the lateral surface of compensator frame like structure.
A kind of 4. preheater compensator of improved structure as claimed in claim 3, it is characterised in that：The stainless steel protection plate
It is fixedly connected with the same side of compensator.
A kind of 5. preheater compensator of improved structure as claimed in claim 2, it is characterised in that：The stainless steel protection plate
It is arranged on the medial surface of compensator frame like structure.
A kind of 6. preheater compensator of improved structure as claimed in claim 5, it is characterised in that：The stainless steel protection plate
It is connected with the same side of compensator in a manner of removable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883158.7U CN206973604U (en) | 2017-07-20 | 2017-07-20 | A kind of preheater compensator of improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883158.7U CN206973604U (en) | 2017-07-20 | 2017-07-20 | A kind of preheater compensator of improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973604U true CN206973604U (en) | 2018-02-06 |
Family
ID=61403188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720883158.7U Expired - Fee Related CN206973604U (en) | 2017-07-20 | 2017-07-20 | A kind of preheater compensator of improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206973604U (en) |
-
2017
- 2017-07-20 CN CN201720883158.7U patent/CN206973604U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 |