CN216115583U - Heat transfer element with crossed oblique corrugated structure and equipment - Google Patents
Heat transfer element with crossed oblique corrugated structure and equipment Download PDFInfo
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- CN216115583U CN216115583U CN202120953258.9U CN202120953258U CN216115583U CN 216115583 U CN216115583 U CN 216115583U CN 202120953258 U CN202120953258 U CN 202120953258U CN 216115583 U CN216115583 U CN 216115583U
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Abstract
The utility model discloses a heat transfer element with a crossed oblique ripple structure, which comprises a plurality of first positioning plates and a plurality of second positioning plates, wherein adjacent first positioning plates are connected through ash through grooves, adjacent second positioning plates are connected through ash through grooves, the first positioning plates and the second positioning plates are arranged in a stacked mode, the first positioning plates and the second positioning plates are arranged in a staggered mode, and oblique ripples in opposite directions are respectively arranged on the first positioning plates and the second positioning plates. According to the utility model, the first positioning plate and the second positioning plate are in an intermittent structure on the groove shape through the connection of the ash through grooves, and the positions of the ash through grooves and the oblique ripples of the first positioning plate and the positions of the ash through grooves and the oblique ripples of the second positioning plate are arranged in a staggered manner, so that a certain resistance coefficient is improved, the disturbance on the air flow passing through the positioning plate is stronger, the heat transfer coefficient and the ash discharge characteristic of the unit surface are increased, the volume of equipment is reduced under the condition of ensuring the same heat exchange quantity under the condition that the smoke and wind parameters and the cold section heat exchange elements are the same, and the cost and the space of the equipment are saved.
Description
Technical Field
The utility model relates to the field, in particular to a heat transfer element with a crossed oblique corrugated structure and equipment.
Background
The inclined corrugated heat exchange element is widely applied to the industries of plate heat exchangers, rotary Air Preheaters (APH) and flue gas heat exchangers (GGH), is a core part of the heat exchangers, and the structural parameters of the inclined corrugated heat exchange element are related to the performance of the heat exchangers, including heat transfer coefficient, resistance coefficient, heat transfer element, ash blockage prevention characteristic and the like.
The heat transfer coefficient of the heat exchange element influences the heat efficiency of the rotary air preheater/flue gas heat exchanger, and the larger the heat transfer coefficient is, the metal weight required by equipment can be saved under the same condition; the resistance coefficient of the heat exchange element influences the energy consumption of the fan, and a large number of researches and engineering practical experiences show that the heat transfer coefficient, the resistance coefficient and the heat exchange area in unit volume of the rotary air preheater/flue gas heat exchanger have a mutual restriction relationship; dust in the flue gas is easy to attach to the surface of the heat exchange element, and meanwhile, the flue gas in a low-temperature area has the characteristics of dewing corrosion and contamination, so the design of the heat exchange element of the rotary air preheater/flue gas heat exchanger needs to consider the design of the anti-blocking characteristic under the actual working condition.
The heat exchange element of the rotary air preheater/flue gas heat exchanger in engineering application is usually designed in a structure mode of combining an ash through groove and oblique corrugations, the oblique corrugated structure type heat exchange element sheet is produced by adopting a production line, a steel strip plate is manufactured by the technical processes of feeding, rolling, shearing, packaging and the like, the production automation degree is high, the mass production can be realized, and the manufacturing cost is low, so that the heat exchange element is widely applied to the market.
In the prior art, the heat exchange element comprises NF series, CU series, DU series and DN series, the DU series heat exchange element has DU waveform and DU3 waveform, the structures of the DU waveform and the DU3 waveform are the same, the difference is that the height of the corrugation is different, the heat transfer coefficient, the resistance coefficient and the ash blockage prevention characteristic are different, and therefore the heat transfer element with better performance needs to be developed in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the problem that the prior art needs to develop a heat transfer element with better performance, a heat transfer element with a crossed oblique corrugated structure and equipment are provided.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a heat transfer element with oblique ripple structure alternately, includes a plurality of locating plate one and a plurality of locating plate two, and is adjacent locating plate one is connected through logical grey groove, and is adjacent locating plate two is passed through logical grey groove is connected, locating plate one with two range upon range of settings of locating plate, just locating plate one position with two staggered arrangement in locating plate two positions, locating plate one with be equipped with opposite direction's oblique ripple on the locating plate two respectively.
By adopting the heat transfer element with the crossed oblique ripple structure, the first positioning plate and the second positioning plate are in an intermittent structure on the groove shape through the connection of the ash through grooves, and the positions of the ash through grooves and the oblique ripples of the first positioning plate and the positions of the ash through grooves and the oblique ripples of the second positioning plate are arranged in a staggered manner, so that a certain resistance coefficient is improved, the disturbance on air flow passing through the heat transfer element is stronger, the heat transfer coefficient and the ash removal characteristic of a unit surface are increased, the volume of equipment is reduced under the condition of ensuring the same heat exchange quantity under the condition of the same smoke, wind parameters and cold section heat exchange elements, the equipment cost and the space are saved, and the heat transfer element is simple in structure, convenient to use and good in effect.
Specifically, taking an example that one 300MW-1000MW boiler unit in a project is matched with two rotary air preheaters, under the condition that smoke and wind parameters (temperature, flow and pressure) and cold section heat exchange elements are the same, the height of the heat exchange elements can be saved by 50mm-150mm by adopting the utility model compared with a plurality of DU3 plate types applied in the current project, the calculation is carried out according to the 3000MW spare part market in China and the total capacity of a newly-built unit, the metal weight can be saved by about 1600 tons in average each year, the economic benefit is reduced by about 1020 ten thousand yuan, and the utility model has great energy-saving benefit.
Preferably, the angle of the inclined corrugation on the first positioning plate is 58-60 degrees, and the angle of the inclined corrugation on the second positioning plate is 58-60 degrees.
Further preferably, the first oblique corrugation angle and the second oblique corrugation angle are equal in size.
Preferably, the distance between the ash through groove connected with the first positioning plate and the ash through groove connected with the adjacent second positioning plate is 35-40 mm.
Further preferably, the ash through groove is a straight corrugated plate.
Further preferably, the hydraulic diameter of the ash through groove is 7mm-9 mm.
Preferably, the pitch of the first positioning plate between the adjacent first positioning plates is 70mm-80mm, and the pitch of the second positioning plate between the adjacent second positioning plates is 70mm-80 mm.
Further preferably, the first pitch of the positioning plate and the second pitch of the positioning plate have the same size.
Preferably, the height of the first positioning plate is 9mm-10mm, and the height of the second positioning plate is 9mm-10 mm.
Further preferably, the height of the first positioning plate is equal to the height of the second positioning plate.
Preferably, the first positioning plate has a plate thickness of 0.5mm to 1.0mm, and the second positioning plate has a plate thickness of 0.5mm to 1.0 mm.
Further preferably, the plate thickness of the first positioning plate and the plate thickness of the second positioning plate are equal in size.
Preferably, the pitch of the inclined corrugations of the first positioning plate is 12mm-18mm, and the pitch of the inclined corrugations of the second positioning plate is 12mm-18 mm.
Further preferably, the pitch of the inclined corrugations of the first positioning plate is equal to the pitch of the inclined corrugations of the second positioning plate in size.
Preferably, the first positioning plate and the second positioning plate are both provided with V-shaped oblique ripples, and the oblique ripples in the corresponding areas of the first positioning plate and the second positioning plate are opposite.
By adopting the structure, the V-shaped oblique ripples and the staggered and stacked arrangement of the first positioning plate and the second positioning plate are utilized, the disturbance to air flow is further increased, and the heat transfer coefficient of the unit surface is increased.
The utility model also provides equipment with a crossed oblique corrugated structure, which is a rotary air preheater and comprises a plurality of heat transfer elements with the crossed oblique corrugated structure, wherein the heat transfer elements are as described in any one of the above items.
The method can be applied to the hot section and the medium temperature section of the rotary air preheater, and can also be applied to the cold section of the rotary air preheater under the conditions of low dust and low pollution.
The utility model also provides equipment with a crossed oblique corrugated structure, which is a flue gas heat exchanger and comprises a plurality of heat transfer elements with the crossed oblique corrugated structure, wherein the heat transfer elements are arranged in the flue gas heat exchanger.
The method can be applied to the hot section and the medium temperature section of the flue gas heat exchanger, and can also be applied to the cold section of the flue gas heat exchanger under the conditions of low dust and low contamination.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. according to the heat transfer element with the crossed oblique corrugated structure, the first positioning plate and the second positioning plate are in an intermittent structure on the groove shape through the connection of the ash through grooves, and the positions of the ash through grooves and the oblique corrugations of the first positioning plate and the positions of the ash through grooves and the oblique corrugations of the second positioning plate are combined and arranged in a staggered manner, so that a certain resistance coefficient is improved, the disturbance on air flow passing through the heat transfer element is stronger, the heat transfer coefficient and the ash removal characteristic of a unit surface are increased, the volume of equipment is reduced under the condition that the same heat exchange quantity is ensured under the condition that the smoke and wind parameters and the cold section heat exchange element are the same, the equipment cost and the space are saved, and the heat transfer element is simple in structure, convenient to use and good in effect;
2. according to the heat transfer element with the crossed oblique corrugated structure, the V-shaped oblique corrugations and the staggered and laminated arrangement of the first positioning plate and the second positioning plate are utilized, so that the disturbance to air flow is further increased, and the heat transfer coefficient of a unit surface is increased.
Drawings
FIG. 1 is a schematic view of a heat transfer element having a cross-corrugated structure;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic view of another structure of a heat transfer member having a cross-corrugated structure.
The labels in the figure are: 1-a first positioning plate, 2-a second positioning plate, 3-an ash through groove, 4-a first positioning plate pitch, 5-a second positioning plate pitch, 6-an ash through groove pitch, 7-a first inclined ripple angle and 8-a second inclined ripple angle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1
As shown in fig. 1 to 3, the heat transfer element with a cross oblique corrugated structure of the present invention includes a plurality of first positioning plates 1 and a plurality of second positioning plates 2, wherein adjacent first positioning plates 1 are connected by ash through grooves 3, adjacent second positioning plates 2 are connected by ash through grooves 3, the first positioning plates 1 and the second positioning plates 2 are stacked, the positions of the first positioning plates 1 and the positions of the second positioning plates 2 are staggered, and oblique corrugations with opposite directions are respectively disposed on the first positioning plates 1 and the second positioning plates 2.
The first oblique corrugation angle 7 on the first positioning plate 1 and the second oblique corrugation angle 8 on the second positioning plate 2 are both 58-60 degrees and are equal in size; the distance 6 between the ash through grooves 3 connected with the first positioning plate 1 and the ash through grooves 3 connected with the adjacent second positioning plates 2 is 35-40 mm, the ash through grooves 3 are straight corrugated plates, and the diameters of the ash through grooves 3 are 7-9 mm; the first positioning plate pitch 4 between the adjacent first positioning plates 1 and the second positioning plate pitch 5 between the adjacent second positioning plates 2 are both 70mm-80mm and are equal in size; the height of the first positioning plate 1 and the height of the second positioning plate 2 are both 9mm-10mm and are equal in size; the thickness of the first positioning plate 1 and the thickness of the second positioning plate 2 are 0.5mm-1.0mm and equal in size; the distance between the inclined corrugations of the first positioning plate 1 and the distance between the inclined corrugations of the second positioning plate 2 are both 12mm-18mm and are equal in size.
As a preferable example of this embodiment, as shown in fig. 3, V-shaped oblique ripples are disposed on the first positioning plate 1 and the second positioning plate 2, and the oblique ripples in the corresponding areas of the first positioning plate 1 and the second positioning plate 2 are opposite to each other, and with this structure, the V-shaped oblique ripples and the staggered and stacked arrangement of the first positioning plate 1 and the second positioning plate 2 further increase disturbance to air flow and increase heat transfer coefficient per unit surface.
Taking a certain 300MW boiler unit assembled with two 30# air preheaters as an example, the heat exchange element of the air preheater adopts a 1300mm hot section element +1000mm DC01 cold section heat exchange element scheme, compared with a 1400mm DU3 hot section element +1000mm DC01 cold section heat exchange element scheme, under the condition that smoke and wind parameters (temperature, flow and pressure) and a cold section heat exchange element plate type (DC01) and height (1000mm) are the same, the technical scheme of the utility model can reduce the hot section heat exchange element by 100mm, save the weight of equipment by about 16 tons and reduce the economic benefit by about 10.2 ten thousand yuan. See table 1 below for a comparison of the design parameters of the air preheater.
TABLE 1 comparison of design parameters for air preheater of certain 300MW boiler unit
By applying the heat transfer element with the crossed oblique corrugated structure, the first positioning plate 1 and the second positioning plate 2 are in an intermittent structure on the groove shape through the connection of the ash through grooves 3, and the positions of the ash through grooves 3 and the oblique corrugations of the first positioning plate 1 and the positions of the ash through grooves 3 and the oblique corrugations of the second positioning plate 2 are combined and arranged in a staggered mode, so that a certain resistance coefficient is improved, the disturbance on air flow passing through the heat transfer element is stronger, the heat transfer coefficient and the ash removal characteristic of a unit surface are increased, the volume of equipment is reduced under the condition that the same heat exchange quantity is ensured under the condition that smoke and wind parameters and a cold section heat exchange element are the same, the equipment cost and the space are saved, and the heat transfer element is simple in structure, convenient to use and good in effect.
Example 2
The equipment with the cross-corrugated structure is a rotary air preheater and comprises a plurality of heat transfer elements with the cross-corrugated structure as described in embodiment 1.
The method can be applied to the hot section of the rotary air preheater and can also be applied to the cold section of the rotary air preheater under the conditions of low dust and low pollution.
Taking a certain 1000MW boiler unit assembled with two 35# air preheaters as an example, the heat exchange element of the air preheater adopts a 1400mm hot section element +1000mm DC01 cold section heat exchange element scheme, compared with a 1500mm DU3 hot section element +1000mm DC01 cold section heat exchange element scheme, under the condition that smoke and wind parameters (temperature, flow and pressure) and a cold section heat exchange element plate type (DC01) and height (1000mm) are the same, the technical scheme of the utility model can reduce the hot section heat exchange element by 100mm, save the weight of equipment by about 46 tons and reduce the economic benefit by about 32.2 ten thousand yuan. See table 2 below for a comparison of the design parameters of the air preheater.
TABLE 2 comparison of design parameters for air preheater of 1000MW boiler unit
Example 3
The utility model also provides equipment with a crossed oblique corrugated structure, which is a flue gas heat exchanger and comprises a plurality of heat transfer elements with the crossed oblique corrugated structure as described in embodiment 1.
The method can be applied to the hot section of the flue gas heat exchanger and can also be applied to the cold section of the flue gas heat exchanger under the conditions of low dust and low contamination.
Taking an environment-friendly project of a sintering machine of a certain steel mill and a 36# flue gas heat exchanger (GGH) as an example, a scheme of 1050mm hot section element +1200mm DC01 cold section heat exchange element is adopted as a heat exchange element of the flue gas heat exchanger, compared with a scheme of 1200mm DU3 hot section element +1200mm DC01 cold section heat exchange element, under the condition that smoke and wind parameters (temperature, flow and pressure) and a plate type (DC01) and a height (1200mm) of the cold section heat exchange element are the same, the technical scheme of the utility model can reduce 150mm of the hot section heat exchange element, save the weight of equipment by about 35 tons, and reduce the economic benefit by about 24.5 ten thousand yuan. See table 3 below for a comparison of the design parameters of the flue gas heat exchanger.
TABLE 3 comparison of design parameters of a flue gas heat exchanger for environment protection project of sintering machine of a certain steel mill
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The heat transfer element with the crossed oblique corrugated structure is characterized by comprising a plurality of first positioning plates (1) and a plurality of second positioning plates (2), wherein the first positioning plates (1) are adjacent to each other and connected through ash through grooves (3), the second positioning plates (2) are adjacent to each other and connected through the ash through grooves (3), the first positioning plates (1) and the second positioning plates (2) are arranged in a stacked mode, the positions of the first positioning plates (1) and the positions of the second positioning plates (2) are arranged in a staggered mode, and oblique corrugations in opposite directions are arranged on the first positioning plates (1) and the second positioning plates (2) respectively.
2. A heat transfer element having a cross-corrugated oblique structure according to claim 1, wherein the angle of the first inclined corrugation (7) on the first positioning plate (1) is 58 ° to 60 °, and the angle of the second inclined corrugation (8) on the second positioning plate (2) is 58 ° to 60 °.
3. The heat transfer element with a crossed oblique corrugated structure according to claim 1, wherein the ash through groove spacing (6) between the ash through groove (3) connected with the first locating plate (1) and the ash through groove (3) connected with the adjacent second locating plate (2) is 35mm-40 mm.
4. The heat transfer element with a crossed oblique corrugated structure according to claim 1, wherein the first positioning plate pitch (4) between adjacent first positioning plates (1) is 70mm to 80mm, and the second positioning plate pitch (5) between adjacent second positioning plates (2) is 70mm to 80 mm.
5. The heat transfer element with a crossed oblique corrugated structure according to claim 1, wherein the height of the first positioning plate (1) is 9mm to 10mm, and the height of the second positioning plate (2) is 9mm to 10 mm.
6. The heat transfer element with a crossed oblique corrugated structure according to claim 1, wherein the plate thickness of the first positioning plate (1) is 0.5mm to 1.0mm, and the plate thickness of the second positioning plate (2) is 0.5mm to 1.0 mm.
7. A heat transfer element having a crossed oblique corrugated structure according to claim 1, wherein the pitch of the oblique corrugations of the first positioning plate (1) is 12mm to 18mm, and the pitch of the oblique corrugations of the second positioning plate (2) is 12mm to 18 mm.
8. A heat transfer element having a crossed oblique corrugated structure according to any one of claims 1 to 7, wherein V-shaped oblique corrugations are provided on each of the first positioning plate (1) and the second positioning plate (2), and the oblique corrugations are opposite in corresponding regions of the first positioning plate (1) and the second positioning plate (2).
9. An apparatus having a cross-corrugated structure, characterized in that it is a rotary air preheater comprising a plurality of heat transfer elements having a cross-corrugated structure as recited in any one of claims 1 to 8.
10. An apparatus having a cross-corrugated structure, characterized in that it is a flue gas heat exchanger comprising a plurality of heat transfer elements having a cross-corrugated structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120953258.9U CN216115583U (en) | 2021-05-07 | 2021-05-07 | Heat transfer element with crossed oblique corrugated structure and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120953258.9U CN216115583U (en) | 2021-05-07 | 2021-05-07 | Heat transfer element with crossed oblique corrugated structure and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216115583U true CN216115583U (en) | 2022-03-22 |
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| CN202120953258.9U Active CN216115583U (en) | 2021-05-07 | 2021-05-07 | Heat transfer element with crossed oblique corrugated structure and equipment |
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| CN (1) | CN216115583U (en) |
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- 2021-05-07 CN CN202120953258.9U patent/CN216115583U/en active Active
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