CN212179655U - Condenser and economizer integrated two-stage heat exchanger - Google Patents
Condenser and economizer integrated two-stage heat exchanger Download PDFInfo
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- CN212179655U CN212179655U CN202020548489.7U CN202020548489U CN212179655U CN 212179655 U CN212179655 U CN 212179655U CN 202020548489 U CN202020548489 U CN 202020548489U CN 212179655 U CN212179655 U CN 212179655U
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Abstract
Condenser and energy-saving appliance integrated two-stage heat exchanger, including a heat transfer cavity, the internal fixed baffle that is provided with of heat transfer cavity, the clearance has between baffle and heat transfer cavity's the top, multichannel heat transfer water pipe has been put to both sides equipartition at the baffle, one side of baffle is the one-level heat exchanger, the opposite side is the second grade heat exchanger, the flue gas import has been seted up to the bottom of one-level heat exchanger, the exhanst gas outlet has been seted up to the side lower part of second grade heat exchanger, be provided with respectively into water collection case and play water collection case on the front of one-level heat exchanger and second grade heat exchanger, the end of intaking of each heat transfer water pipe is connected in into water collection case, go out the water collection case and be connected out on the water collection case of water end. The two-stage heat exchanger effectively reduces the floor area of the equipment.
Description
Technical Field
The utility model relates to a heat exchanger for the boiler, in particular to two-stage heat exchanger that boiler tail gas waste heat recovery used belongs to heat exchanger technical field.
Background
The condenser is a heat exchange device which is generally adopted in the boiler industry and used for recovering the heat of the flue gas at the tail part of the boiler. The equipment can effectively reduce the exhaust gas temperature of the boiler, improve the feed water temperature of the boiler and further improve the thermal efficiency of the boiler. In order to pursue more efficient heat exchange effect, more and more boilers are provided with two-stage heat exchangers (also called an economizer and a condenser) at the tail part. The water flow path is usually divided into two paths in the soft water tank, wherein one path returns to the soft water tank after flowing through a second-stage heat exchanger (also called as a condenser), and the other path enters the boiler after flowing through a first-stage heat exchanger (also called as an economizer). The flow can utilize the waste heat of the flue gas in a gradient manner, and the efficiency of the boiler is further improved.
With the continuous progress of the technology, the design of the boiler tends to be miniaturized and developed day by day. The corresponding boiler tail heat exchanger also needs to be sufficiently compact. The two-stage heat exchanger at the tail part of the existing boiler is split, and the installation mode comprises a vertical type and a horizontal type. When the vertical type heat exchanger is installed, the flue gas sequentially passes through the two stages of heat exchangers from bottom to top and then is discharged. During horizontal installation, flue gas horizontally penetrates through the two stages of heat exchangers in sequence and then is discharged. The two stages of heat exchangers are connected through a rectangular flange. Vertical heat exchanger vertical height often is on the large side when arranging, and horizontal length often is on the large side when arranging horizontally, and this arranges the difficulty that causes to boiler afterbody heat-transfer surface, is unfavorable for the miniaturization of boiler volume, and what the heat exchange tube adopted is the fluorescent tube, and heat exchange efficiency is lower, in order to reach exhaust gas temperature, must have sufficient heat transfer area, has restricted the volume reduction of heat exchanger, and rectangle flange joint position is handled and is not appropriate to have the comdenstion water to spill simultaneously, unfavorable boiler steady operation. But also causes large heat dissipation area and low heat exchange efficiency.
Disclosure of Invention
An object of the utility model is to overcome the above-mentioned problem that exists of the two-stage heat exchanger that present boiler tail adopted, provide a condenser and energy-saving appliance integrated two-stage heat exchanger.
In order to realize the purpose of the utility model, the following technical proposal is adopted: the two-stage heat exchanger integrating the condenser and the energy saver comprises a heat exchange cavity, a clapboard is fixedly arranged in the heat exchange cavity, a gap is arranged between the clapboard and the top of the heat exchange cavity, a plurality of heat exchange water pipes are uniformly distributed on two sides of the partition plate, one side of the partition plate is a primary heat exchanger, the other side of the partition plate is a secondary heat exchanger, the bottom of the primary heat exchanger is provided with a flue gas inlet, the lower part of the side surface of the secondary heat exchanger is provided with a flue gas outlet, the front surfaces of the first-stage heat exchanger and the second-stage heat exchanger are respectively provided with a water inlet collecting tank and a water outlet collecting tank, the water inlet end of each heat exchange water pipe is connected with the water inlet collecting tank, the water outlet end of each heat exchange water pipe is connected with the water outlet collecting tank, the water collecting tanks at the tops of the first-stage heat exchanger and the second-stage heat exchanger are connected with exhaust connecting pipes, two side walls of each partition plate are fixedly connected with a plurality of baffle plates which are distributed up and down, and a plurality of baffles which are distributed up and down are also fixedly connected on the inner walls of the first-stage heat exchanger and the second-stage heat exchanger which are opposite to the partition plates.
Further, the method comprises the following steps of; the top of the heat exchange cavity is provided with an inspection opening, and an upper cover is arranged on the inspection opening in a matching manner.
Further, the method comprises the following steps of; the heat exchange water pipe adopts a steel-aluminum composite spiral finned pipe.
The utility model discloses an actively beneficial technological effect lies in: this two-stage heat exchanger integrates energy-saving appliance and condenser in a cavity, the effectual area of equipment that has reduced, adapting unit has been reduced, material cost and installation cost have been reduced to energy-saving appliance alone and condenser on the same scale, adopt the separation blade can reduce the flue gas and flow along the wall, the reinforcing heat transfer, the heat transfer water pipe adopts steel aluminium composite spiral finned tube, heat transfer area is about 10 times with the specification fluorescent tube, the required heat exchange tube still less under the equal heat transfer area, make the volume of heat exchanger further reduce, water and flue gas reverse flow in S-shaped heat exchange tube, make the exhaust gas temperature lower, reduce the loss of discharging fume, and then improve boiler efficiency.
Drawings
Fig. 1 is a schematic internal plan view of the present invention.
Fig. 2 is a perspective view of the present invention.
Detailed Description
In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.
The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a heat exchange cavity; 2: a partition plate; 3: a heat exchange water pipe; 4: a baffle plate; 5: a flue gas inlet; 6: a flue gas outlet; 7: a gap; 8: an upper cover; 9: a water inlet header of the secondary heat exchanger; 10: the water outlet header of the secondary heat exchanger; 11: a primary heat exchanger water outlet header; 12: a water inlet header of the primary heat exchanger; 13: an exhaust connecting pipe connected with the water outlet header of the secondary heat exchanger; 14: and the water inlet header of the primary heat exchanger is connected with an exhaust connecting pipe.
As shown in the attached drawing, the two-stage heat exchanger integrating the condenser and the energy saver comprises a heat exchange cavity 1, wherein an inspection opening is formed in the top of the heat exchange cavity, an upper cover 8 is arranged on the inspection opening in a matched mode, a partition plate 2 is fixedly arranged in the heat exchange cavity 1, a gap 7 is formed between the partition plate and the top of the heat exchange cavity, a circulation flue is formed in the gap, a plurality of heat exchange water pipes 3 are uniformly distributed on two sides of the partition plate, the heat exchange water pipes are steel-aluminum composite spiral finned pipes which are commercially available products, one side of the partition plate 2 is a first-stage heat exchanger, the other side of the partition plate is a second-stage heat exchanger, a flue gas inlet 5 is formed in the bottom of the first-stage heat exchanger, a flue gas outlet 6 is formed in the lower portion of the side of the second-stage heat exchanger, a water inlet header and, 12 is a water inlet header of the primary heat exchanger; 9 shows the second grade heat exchanger collection case that intakes, 10 shows the second grade heat exchanger collection case that goes out, the end of intaking of heat transfer water pipe is connected at corresponding water inlet collection case among one-level heat exchanger and the second grade heat exchanger, goes out the water end and connects on corresponding water header, be connected with the exhaust takeover on the water header that one-level heat exchanger, second grade heat exchanger lie in the top, the water header that the one-level heat exchanger intake lies in the top, the water header that the second grade heat exchanger goes out lies in the top, 14 shows the exhaust takeover of connecting on the water header of one-level heat exchanger, baffle both sides wall all fixedly connected with polylith baffle 4 that distributes from top to bottom, also fixedly connected with polylith baffle 4 that distributes from top to bottom on the inner wall of one-level heat exchanger and second.
When the heat exchanger exchanges heat, flue gas enters from the flue gas inlet, passes through the primary heat exchanger from bottom to top, then turns to enter the space on the other side from the top of the partition plate, passes through the secondary heat exchanger from top to bottom, then turns to the bottom and is discharged through the flue gas outlet. Be provided with the inspection socket, conveniently overhaul and clear up condenser inside.
After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.
Claims (3)
1. Condenser and energy-saving appliance integrated two-stage heat exchanger, including a heat exchange cavity, its characterized in that: the two-stage heat exchanger integrating the condenser and the energy saver comprises a heat exchange cavity, a clapboard is fixedly arranged in the heat exchange cavity, a gap is arranged between the clapboard and the top of the heat exchange cavity, a plurality of heat exchange water pipes are uniformly distributed on two sides of the partition plate, one side of the partition plate is a primary heat exchanger, the other side of the partition plate is a secondary heat exchanger, the bottom of the primary heat exchanger is provided with a flue gas inlet, the lower part of the side surface of the secondary heat exchanger is provided with a flue gas outlet, the front surfaces of the first-stage heat exchanger and the second-stage heat exchanger are respectively provided with a water inlet collecting tank and a water outlet collecting tank, the water inlet end of each heat exchange water pipe is connected with the water inlet collecting tank, the water outlet end of each heat exchange water pipe is connected with the water outlet collecting tank, the water collecting tanks at the tops of the first-stage heat exchanger and the second-stage heat exchanger are connected with exhaust connecting pipes, two side walls of each partition plate are fixedly connected with a plurality of baffle plates which are distributed up and down, and a plurality of baffles which are distributed up and down are also fixedly connected on the inner walls of the first-stage heat exchanger and the second-stage heat exchanger which are opposite to the partition plates.
2. The condenser and economizer integrated two-stage heat exchanger of claim 1, wherein: the top of the heat exchange cavity is provided with an inspection opening, and an upper cover is arranged on the inspection opening in a matching manner.
3. The condenser and economizer integrated two-stage heat exchanger of claim 1, wherein: the heat exchange water pipe adopts a steel-aluminum composite spiral finned pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548489.7U CN212179655U (en) | 2020-04-15 | 2020-04-15 | Condenser and economizer integrated two-stage heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548489.7U CN212179655U (en) | 2020-04-15 | 2020-04-15 | Condenser and economizer integrated two-stage heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212179655U true CN212179655U (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020548489.7U Active CN212179655U (en) | 2020-04-15 | 2020-04-15 | Condenser and economizer integrated two-stage heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212179655U (en) |
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2020
- 2020-04-15 CN CN202020548489.7U patent/CN212179655U/en active Active
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| CB03 | Change of inventor or designer information |
Inventor after: Wu Yanli Inventor after: He Shuai Inventor after: Hao Hongwei Inventor after: Yang Jian Inventor after: Li Sen Inventor after: Xing Guojun Inventor before: Wu Yanli Inventor before: He Shuai Inventor before: Chen Yuanyuan Inventor before: Hao Hongwei Inventor before: Yang Jian Inventor before: Li Sen Inventor before: Xing Guojun |