CN206973606U - A kind of protection structure of preheater inlet compensator - Google Patents
A kind of protection structure of preheater inlet compensator Download PDFInfo
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- CN206973606U CN206973606U CN201720884154.0U CN201720884154U CN206973606U CN 206973606 U CN206973606 U CN 206973606U CN 201720884154 U CN201720884154 U CN 201720884154U CN 206973606 U CN206973606 U CN 206973606U
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- Prior art keywords
- compensator
- stainless steel
- frame
- heat exchange
- exchange unit
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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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Abstract
The utility model discloses a kind of protection structure of preheater inlet compensator; the compensator is frame like structure; the both sides of frame like structure are respectively interface; the medial surface of the frame like structure of the compensator, which is provided with, to be used to shelter from the stainless steel protection plate that compensator reduces heat transfer and material contact, and the stainless steel protection plate forms frame like structure corresponding with compensator.The heat transfer of heat source gas is reduced to compensator by setting stainless steel protection plate at preheater thermal source gas feed; and contacted by stainless steel protection plate come the corrosive substance in blocking heat source gas with compensator; so as to reach the protection to compensator, extend the service life of compensator.
Description
Technical field
Preheater field is the utility model is related to, more particularly to the protection structure of preheater inlet compensator.
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, it is also existing because heat exchange medium temperature scope is big, the structure design shortcoming of corrosivity and existing compensator
The use of compensator do not take safeguard measure, have in use some prematurely cracking existing compensators, corrosion phenomenon,
Compensator service life is 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 to provide a kind of protection structure of preheater inlet compensator, and it is effectively improved
Problems of the prior art are stated, extend the service life of compensator.
To achieve the above object, the technical solution of the utility model is：A kind of protection structure of preheater inlet compensator,
The compensator is frame like structure, and the both sides of frame like structure are respectively interface, and the medial surface of the frame like structure of the compensator is set
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.
The preheater includes framework and heat exchange unit, and the framework is provided with connector, the both sides of the compensator
Interface connects connector and heat exchange unit respectively, and the side edge of the stainless steel protection plate is connected to by removable mode
On connector, its another side is close to the junction of heat exchange unit and compensator interface but is not fixedly connected with heat exchange unit.
The heat exchange unit is provided with the rebound for being connected with the interface of compensator.
The stainless steel protection plate is connected on specially described connector with connector by removable mode to be distributed admittedly
Surely screw rod is provided with, each screw rod is corresponded on the stainless steel protection plate and offers through hole, is screwed togather by screw rod through through hole during installation
Top nut locks.
By using above-mentioned technical proposal, the beneficial effects of the utility model are：By in preheater thermal source gas feed
The inner side of compensator its frame like structure one layer of stainless steel protection plate, the gap between the stainless steel protection plate and compensator are set
In heat source gas amount it is small and almost static, heat output very little, thus compensator on the inside of temperature close to outside gas temperature, no
The yield strength of rust steel is higher, and is connect by stainless steel protection plate come the corrosive substance in blocking heat source gas with compensator
Touch, therefore compensator is hardly damaged, so as to reach the protection to 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 (4)
1. a kind of protection structure of preheater inlet compensator, the compensator is frame like structure, and the both sides of frame like structure are distinguished
For interface, it is characterised in that：The medial surface of the frame like structure of the compensator, which is provided with, to be used to shelter from compensator reduction heat transfer
With the stainless steel protection plate of material contact, the stainless steel protection plate forms frame like structure corresponding with compensator.
A kind of 2. protection structure of preheater inlet compensator as claimed in claim 1, it is characterised in that：The preheater bag
Included framework and heat exchange unit, the framework is provided with connector, two side interfaces of the compensator connect respectively connector and
Heat exchange unit, the side edge of the stainless steel protection plate are connected on connector by removable mode, its another side
It is not fixedly connected close to the junction of heat exchange unit and compensator interface but with heat exchange unit.
A kind of 3. protection structure of preheater inlet compensator as claimed in claim 2, it is characterised in that：The heat exchange unit
It is provided with the rebound for being connected with the interface of compensator.
A kind of 4. protection structure of preheater inlet compensator as claimed in claim 2 or claim 3, it is characterised in that：It is described stainless
Steel protection board and connector are connected distribution on specially described connector by removable mode and are fixed with screw rod, it is described not
Each screw rod is corresponded on rust steel protection board and offers through hole, and screwing togather top nut through through hole by screw rod during installation locks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884154.0U CN206973606U (en) | 2017-07-20 | 2017-07-20 | A kind of protection structure of preheater inlet compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884154.0U CN206973606U (en) | 2017-07-20 | 2017-07-20 | A kind of protection structure of preheater inlet compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973606U true CN206973606U (en) | 2018-02-06 |
Family
ID=61403021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720884154.0U Expired - Fee Related CN206973606U (en) | 2017-07-20 | 2017-07-20 | A kind of protection structure of preheater inlet compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206973606U (en) |
-
2017
- 2017-07-20 CN CN201720884154.0U patent/CN206973606U/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 |
Granted publication date: 20180206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |