CN212843064U - Heat exchanger for boiler power station - Google Patents
Heat exchanger for boiler power station Download PDFInfo
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- CN212843064U CN212843064U CN202021201004.3U CN202021201004U CN212843064U CN 212843064 U CN212843064 U CN 212843064U CN 202021201004 U CN202021201004 U CN 202021201004U CN 212843064 U CN212843064 U CN 212843064U
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Abstract
A heat exchange device of a boiler power station is used for utilizing heat energy of the boiler power station and comprises a shell (1), a pipeline (2), a hot flow inlet (3), a cold flow inlet (4), a hot flow outlet (5) and a cold flow outlet (6). The pipe wall of the pipeline (2) at the heat flow inlet (3) and the heat flow outlet (4) is fixedly connected with the shell (1); the cold fluid inlet (4) is arranged at the upper end of the shell (1) and is close to the hot fluid inlet (3), and the cold fluid outlet (6) is arranged at the lower end of the shell (1) and is close to the hot fluid outlet (5); the heat flow inlet (3) of the pipeline (2) is larger than the heat flow outlet (5) thereof. The utility model discloses a hot and cold flow temperature difference suits with heat transfer area, optimizes the overall arrangement of hot and cold flow entry, export, has improved heat transfer device's heat exchange efficiency, reduces the thermal stress of heat transfer device pipeline, has saved heat transfer pipeline material, has improved heat transfer device's life-span.
Description
Technical Field
The utility model belongs to the technical field of boiler power station equipment, a boiler power station heat transfer device is related to.
Background
The heat energy utilization heat exchange device for the boiler power station at present adopts the U-shaped layout of the equal-diameter pipeline, and the mode has no depth optimization structure in the aspect of heat transfer theory, so that the pipeline consumes more materials, the heat exchange device is large in size, and meanwhile, the heat exchange efficiency of the heat exchange thin-wall pipeline is low and the thermal stress is large.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the heat exchange device for the boiler power station is adapted to the heat exchange area through the temperature difference of hot and cold flows, the layout of the hot and cold flow inlets and outlets is optimized, the heat exchange efficiency of the heat exchange device is improved, the thermal stress of the heat exchange device pipeline is reduced, heat exchange pipeline materials are saved, and the service life of the heat exchange device is prolonged.
The to-be-solved technical problem of the utility model adopts following technical scheme to realize:
the heat exchange device of the boiler power station comprises a shell, a pipeline, a heat flow inlet, a cold flow inlet, a heat flow outlet and a cold flow outlet, wherein the pipeline is fixedly connected with the shell at the pipe walls of the heat flow inlet and the heat flow outlet; the cold flow inlet is arranged at the upper end of the shell and is close to the hot flow inlet, and the cold flow outlet is arranged at the lower end of the shell and is close to the hot flow outlet; the heat flow inlet of the pipeline is large, and the heat flow outlet is small. The heat flow inlet of the pipeline is large, and the heat flow outlet is small, so that the heat exchange area from the heat flow inlet to the heat flow outlet is gradually reduced. The positions of the hot fluid inlet and the cold fluid inlet are close to each other, so that the temperature difference of hot and cold fluid at the positions is maximum, the heat exchange area is maximum, the temperature difference is adaptive to the heat exchange area, and the heat exchange efficiency is high. The positions of the hot fluid outlet and the cold fluid outlet are close to each other, so that the temperature difference of hot and cold fluid at the positions is minimum, the heat exchange area is minimum, and the heat exchange area is adaptive to the temperature difference of the hot and cold fluid.
Compared with the prior art, the beneficial effects of the utility model are that: the heat exchange device has the advantages that the temperature difference of hot and cold flows is matched with the heat exchange area, the layout of the hot and cold flow inlets and outlets is optimized, the heat exchange efficiency of the heat exchange device is improved, the thermal stress of the heat exchange device pipeline is reduced, the heat exchange pipeline material is saved, and the service life of the heat exchange device is prolonged.
Drawings
Fig. 1 is a sectional view of the heat exchanger of the present invention.
In the figure: 1-shell, 2-pipeline, 3-hot fluid inlet, 4-cold fluid inlet, 5-hot fluid outlet and 6-cold fluid outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the heat exchange device for the boiler power station is used for utilizing heat energy of the boiler power station and comprises a shell (1), a pipeline (2), a hot fluid inlet (3), a cold fluid inlet (4), a hot fluid outlet (5) and a cold fluid outlet (6). The pipe wall of the pipeline (2) at the heat flow inlet (3) and the heat flow outlet (4) is fixedly connected with the shell (1); the cold fluid inlet (4) is arranged at the upper end of the shell (1) and is close to the hot fluid inlet (3), and the cold fluid outlet (6) is arranged at the lower end of the shell (1) and is close to the hot fluid outlet (5); the heat flow inlet (3) of the pipeline (2) is larger than the heat flow outlet (5) thereof. The inlet of the pipeline (2) is large, the outlet of the pipeline is small, and the heat exchange area from the heat flow inlet (3) to the heat flow outlet (5) is gradually reduced; the positions of the hot fluid inlet (3) and the cold fluid inlet (4) are close, the temperature difference of hot and cold fluids at the positions is maximum, the heat exchange area is maximum, the temperature difference is adaptive to the heat exchange area, and the heat exchange efficiency is high; the positions of the heat flow outlet (5) and the cold flow outlet (6) are close, the temperature difference of hot and cold flows at the positions is minimum, the heat exchange area is minimum, and the heat exchange area is adaptive to the temperature difference of the hot and cold flows.
According to the formula of heat exchange
∅=kA∆T
∅ Δ T ⁄ (1/kA) = heat transfer propulsion force/heat transfer thermal resistance
Wherein ∅ represents the heat transfer amount; k is the comprehensive heat exchange coefficient; a is the heat exchange area; Δ T is the temperature difference.
According to the formula, under the condition that the heat transfer driving force is determined, the heat transfer area is increased, and the heat transfer efficiency can be improved.
The heat exchange device has the advantages that the temperature difference of hot and cold flows is matched with the heat exchange area, the layout of the hot and cold flow inlets and outlets is optimized, the heat exchange efficiency of the heat exchange device is improved, the thermal stress of the heat exchange device pipeline is reduced, the heat exchange pipeline material is saved, and the service life of the heat exchange device is prolonged.
Claims (1)
1. Boiler power station heat transfer device, its characterized in that: the heat exchanger comprises a shell, a pipeline, a heat flow inlet, a cold flow inlet, a heat flow outlet and a cold flow outlet, wherein the pipeline is fixedly connected with the shell at the pipe walls of the heat flow inlet and the heat flow outlet; the cold flow inlet is arranged at the upper end of the shell and is close to the hot flow inlet, and the cold flow outlet is arranged at the lower end of the shell and is close to the hot flow outlet; the heat flow inlet of the pipeline is large, and the heat flow outlet is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021201004.3U CN212843064U (en) | 2020-06-26 | 2020-06-26 | Heat exchanger for boiler power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021201004.3U CN212843064U (en) | 2020-06-26 | 2020-06-26 | Heat exchanger for boiler power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212843064U true CN212843064U (en) | 2021-03-30 |
Family
ID=75176743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021201004.3U Active CN212843064U (en) | 2020-06-26 | 2020-06-26 | Heat exchanger for boiler power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212843064U (en) |
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2020
- 2020-06-26 CN CN202021201004.3U patent/CN212843064U/en active Active
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