CN223331749U - Energy-saving preheater for low-temperature waste heat recovery - Google Patents
Energy-saving preheater for low-temperature waste heat recoveryInfo
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- CN223331749U CN223331749U CN202422779681.8U CN202422779681U CN223331749U CN 223331749 U CN223331749 U CN 223331749U CN 202422779681 U CN202422779681 U CN 202422779681U CN 223331749 U CN223331749 U CN 223331749U
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- saving preheater
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- heat exchange
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Abstract
The utility model discloses an energy-saving preheater for low-temperature waste heat recovery in the technical field related to energy-saving preheaters, which comprises an energy-saving preheater main body and a heat exchange tube group, wherein the lower end of the energy-saving preheater main body is provided with a smoke inlet, the upper end of the energy-saving preheater main body is provided with a smoke outlet, a plurality of layers of heat exchange tube groups are arranged in the energy-saving preheater main body, one end of each heat exchange tube group is connected with a water inlet main pipe, the other end of each heat exchange tube group is connected with a water return main pipe, a heat conduction sleeve is arranged outside a section of the heat exchange tube group, which is positioned in the energy-saving preheater main body, a heat dissipation fin is arranged outside the heat conduction sleeve, and a pipeline connecting sleeve is arranged at the smoke inlet of the energy-saving preheater main body. The lower baffle plate is arranged at the smoke inlet of the energy-saving preheater main body, so that the flow rate of smoke can be effectively reduced, the smoke can more uniformly enter the energy-saving preheater main body and can be fully subjected to heat exchange with the heat exchange tube group, and the heat conduction sleeve and the heat dissipation fins are arranged on the outer side of the heat exchange tube group, so that the heat energy recovery rate is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of energy-saving preheaters, and particularly relates to an energy-saving preheater for low-temperature waste heat recovery.
Background
The energy-saving preheater is heat energy waste heat recovery equipment, the application in industrial production is increasingly wide, the equipment can effectively reduce energy consumption and also reduce environmental pollution through recovering waste heat discharged by a boiler, green production is realized, a heat exchange tube set is arranged in the traditional energy-saving preheater, flue gas enters the preheater from an inlet of the preheater and is subjected to heat exchange with the heat exchange tube set, part of flue gas passes through a gap between the heat exchange tube sets and is directly discharged from an outlet without being subjected to sufficient heat exchange, and the heat energy recovery rate is low.
The present utility model has been made in view of this.
Disclosure of utility model
The utility model aims to solve the technical problems of overcoming the defects of the prior art and providing an energy-saving preheater for low-temperature waste heat recovery, and in order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:
The energy-saving preheater for recovering low-temperature waste heat comprises an energy-saving preheater main body and a heat exchange tube group, wherein a smoke inlet is formed in the lower end of the energy-saving preheater main body, a smoke outlet is formed in the upper end of the energy-saving preheater main body, a plurality of layers of heat exchange tube groups are arranged in the energy-saving preheater main body, one end of each heat exchange tube group is connected with a water inlet main pipe, the other end of each heat exchange tube group is connected with a water return main pipe, a heat conduction sleeve is arranged outside a section in the energy-saving preheater main body, radiating fins are arranged outside the heat conduction sleeve, a pipeline connecting sleeve is arranged at the smoke inlet of the energy-saving preheater main body, a drain pipe is arranged on the outer wall of the pipeline connecting sleeve and on the outer wall of the energy-saving preheater main body, a lower baffle plate is arranged in the energy-saving preheater main body, and an upper baffle plate is arranged in the energy-saving preheater main body, and is used for delaying the flow rate of smoke in the energy-saving preheater.
As a further scheme of the utility model, the lower baffle plate is arranged in an inclined structure, and the lower baffle plate is provided with uniformly distributed air holes, so that the flow rate of the flue gas entering the energy-saving preheater main body can be effectively reduced.
As a still further proposal of the utility model, the upper baffle plate is arranged in a horizontal dislocation structure, and the upper baffle plate is also provided with the uniformly distributed air holes, thereby further delaying the fume discharge speed.
As a still further scheme of the utility model, a water inlet joint is arranged at the middle position of the outer side of the water inlet main pipe, a water outlet joint is arranged at the middle position of the outer side of the water return main pipe, and the water inlet joint is connected with a water supply end of circulating water.
As a still further proposal of the utility model, the upper part and the lower part of the energy-saving preheater main body are both in cone structure design, and the smoke inlet and the smoke outlet are both provided with connecting flanges for sealing connection with a flue.
As a still further proposal of the utility model, the inner wall of the energy-saving preheater main body is provided with an insulating layer for reducing heat loss.
As a still further proposal of the utility model, the radiating fins between the adjacent heat conducting sleeves are mutually matched and used for reducing the gap between the pipelines of the heat exchange pipe group so as to lead the heat exchange pipe group and the flue gas to carry out full heat exchange.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects.
The lower baffle plate is arranged at the smoke inlet of the energy-saving preheater main body, so that the flow rate of smoke can be effectively reduced, the smoke can more uniformly enter the energy-saving preheater main body and can be fully subjected to heat exchange with the heat exchange tube group, and the heat conduction sleeve and the heat dissipation fins are arranged on the outer side of the heat exchange tube group, so that the heat energy recovery rate is effectively improved.
The upper baffle plate is arranged at the smoke outlet, so that the smoke discharge speed is further delayed, negative pressure is avoided, the use effect of the energy-saving preheater is influenced, and meanwhile, the condensed water collecting groove is arranged at the smoke inlet and is used for collecting condensed water generated in the working process of the energy-saving preheater, and the condensed water is discharged through the drain pipe, so that the energy-saving preheater has a simple and practical structure.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. Attached at
In the figure:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a front cross-sectional view of the present utility model;
FIG. 4 is a schematic illustration of a heat exchange tube bank arrangement of the present utility model;
FIG. 5 is a schematic view of a baffle of the present utility model.
The energy-saving preheater comprises a main body of the energy-saving preheater, a smoke inlet, a smoke outlet, a main water inlet pipe, a main water return pipe, a main water inlet pipe, a water inlet joint, a water outlet joint, a heat exchange pipe group, a connecting flange, a water discharge pipe, a connecting sleeve, a 12 condensed water collecting tank, a 13 lower baffle plate, a 14 upper baffle plate, a 15 uniformly distributed ventilation holes, a 16 heat conducting sleeve, a 17 heat radiating fin, a 18 heat insulating layer.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
As shown in fig. 1 to 5, the energy-saving preheater for low-temperature waste heat recovery comprises an energy-saving preheater main body 1 and a heat exchange tube group 8, wherein a smoke inlet 2 is formed at the lower end of the energy-saving preheater main body 1, a smoke outlet 3 is formed at the upper end of the energy-saving preheater main body 1, a plurality of layers of heat exchange tube groups 8 are arranged in the energy-saving preheater main body 1, one end of each heat exchange tube group 8 is connected with a water inlet main pipe 4, the other end of each heat exchange tube group 8 is connected with a water return main pipe 5, a heat conduction sleeve 16 is arranged outside a section of the heat exchange tube group 8 in the energy-saving preheater main body 1, radiating fins 17 are arranged outside the heat conduction sleeve 16, a pipeline connecting sleeve 11 is arranged at the smoke inlet 2 of the energy-saving preheater main body 1, a drain pipe 10 is arranged between the outer wall of the pipeline connecting sleeve 11 and the inner wall of the energy-saving preheater main body 1, a lower baffle 13 is arranged in the energy-saving preheater main body 1 near the smoke inlet 2, and an upper baffle 14 is arranged in the energy-saving preheater main body 1 near the smoke outlet 3 for delaying the flow rate in the energy-saving preheater.
The lower baffle plate 13 is in an inclined structure, and uniformly distributed ventilation holes 15 are formed in the lower baffle plate 13, so that the flow rate of the flue gas entering the energy-saving preheater main body 1 can be effectively reduced.
The upper baffle plate 14 is arranged in a horizontal dislocation structure, and the upper baffle plate 14 is also provided with uniformly distributed ventilation holes 15, so that the fume discharge speed can be further delayed.
The middle position of the outer side of the water inlet main pipe 4 is provided with a water inlet joint 6, the middle position of the outer side of the water return main pipe 5 is provided with a water outlet joint 7, and the water inlet joint 6 is connected with the water supply end of circulating water.
The upper part and the lower part of the energy-saving preheater main body 1 are both of cone structural design, and the positions of the smoke inlet 2 and the smoke outlet 3 are both provided with connecting flanges 9 for sealing connection with a flue.
An insulating layer 18 is provided on the inner wall of the energy-saving preheater main body 1 for reducing heat dissipation.
The heat radiating fins 17 between the adjacent heat conducting sleeves 16 are mutually matched to reduce the gaps between the pipelines of the heat exchange tube group 8, so that the heat exchange tube group 8 and the flue gas can perform sufficient heat exchange.
The flue gas inlet pipeline is connected with a pipeline connecting sleeve 11, flue gas is supplied into an energy-saving preheater main body 1, a lower baffle plate 13 is arranged at a flue gas inlet 2, the lower baffle plate 13 is of an inclined dislocation structure, uniformly distributed air holes 15 are formed in the lower baffle plate 13, the flue gas entering the energy-saving preheater main body 1 can uniformly and slowly move upwards to exchange heat with a heat exchange pipe group 8, circulating water is arranged in the heat exchange pipe group 8, a heat conducting sleeve 16 is sleeved outside the heat exchange pipe group 8, radiating fins 17 are arranged outside the heat conducting sleeve 16, the heat exchange rate can be effectively improved, the heat efficiency of flue gas recovery is further improved, the flue gas passing through the heat exchange pipe group 8 is discharged out of the energy-saving preheater main body 1 after being decelerated by an upper baffle plate 14, the flue gas entering the energy-saving preheater main body 1 is precooled to be condensed into water, condensed water flows into a condensed water collecting tank 12 along the lower baffle plate 13 and the inner wall of the energy-saving preheater main body 1, and the condensed water is discharged through a drain pipe 10;
The novel heat exchange type energy-saving preheater is reasonable in structural design, convenient to install and use, the smoke inlet 2 of the energy-saving preheater main body 1 is provided with the lower baffle plate 13, the smoke flow rate can be effectively reduced, smoke is enabled to enter the energy-saving preheater main body 1 more uniformly, sufficient heat exchange is carried out between the smoke and the heat exchange tube group 8, the heat exchange tube group 8 is provided with the heat conducting sleeve 16 and the radiating fins 17, the heat energy recovery rate is effectively improved, the smoke outlet 3 is provided with the upper baffle plate 14, the smoke discharge speed is further delayed, negative pressure is avoided, the use effect of the energy-saving preheater is affected, meanwhile, the condensed water collecting groove 12 is arranged at the smoke inlet 2 and used for collecting condensed water generated in the working process of the energy-saving preheater, and the condensed water is discharged through the drain pipe 10.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.
Claims (7)
1. The utility model provides an energy-conserving pre-heater of low temperature waste heat recovery, includes energy-conserving pre-heater main part (1) and heat transfer nest of tubes (8), its characterized in that, the lower extreme of energy-conserving pre-heater main part (1) is provided with inlet (2), and the upper end is provided with outlet (3), be provided with the multilayer in energy-conserving pre-heater main part (1) heat transfer nest of tubes (8), the one end of heat transfer nest of tubes (8) is connected with inlet main pipe (4), and the other end is connected with return water main pipe (5), heat transfer nest of tubes (8) are located section in energy-conserving pre-heater main part (1) is provided with heat conduction sleeve (16) outward, heat conduction sleeve (16) outside is provided with radiating fin (17), inlet (2) department of energy-conserving pre-heater main part (1) installs pipe connection sleeve (11), be formed with condensate water collecting tank (12) between the outer wall of pipe connection sleeve (11) with the inner wall of energy-conserving pre-heater main part (1), install drain pipe (10) on the outer wall of energy-conserving pre-heater main part (1) side, energy-conserving pre-heater main part (1) is close to in baffle (14) is located in baffle (1) the inlet (14).
2. The energy-saving preheater for low-temperature waste heat recovery according to claim 1, wherein the lower baffle plate (13) is arranged in an inclined structure, and uniformly distributed ventilation holes (15) are formed in the lower baffle plate (13).
3. The energy-saving preheater for low-temperature waste heat recovery according to claim 2, wherein the upper baffle plate (14) is arranged in a horizontal dislocation structure, and the uniformly distributed ventilation holes (15) are also formed in the upper baffle plate (14).
4. The energy-saving preheater for low-temperature waste heat recovery according to claim 3, wherein a water inlet joint (6) is arranged at the middle position of the outer side of the water inlet main pipe (4), and a water outlet joint (7) is arranged at the middle position of the outer side of the water return main pipe (5).
5. The energy-saving preheater for low-temperature waste heat recovery according to claim 4, wherein the upper part and the lower part of the energy-saving preheater main body (1) are both of cone structural design, and the smoke inlet (2) and the smoke outlet (3) are both provided with connecting flanges (9).
6. The low-temperature waste heat recovery energy-saving preheater according to claim 5, wherein an insulation layer (18) is provided on the inner wall of the energy-saving preheater body (1).
7. Energy-saving preheater for low temperature waste heat recovery according to claim 6, characterized in that the heat radiating fins (17) between adjacent heat conducting sleeves (16) are mutually matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422779681.8U CN223331749U (en) | 2024-11-14 | 2024-11-14 | Energy-saving preheater for low-temperature waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422779681.8U CN223331749U (en) | 2024-11-14 | 2024-11-14 | Energy-saving preheater for low-temperature waste heat recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223331749U true CN223331749U (en) | 2025-09-12 |
Family
ID=96976230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422779681.8U Active CN223331749U (en) | 2024-11-14 | 2024-11-14 | Energy-saving preheater for low-temperature waste heat recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223331749U (en) |
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2024
- 2024-11-14 CN CN202422779681.8U patent/CN223331749U/en active Active
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