CN221036977U - Heat pipe heat exchanger for vertical flue - Google Patents
Heat pipe heat exchanger for vertical flue Download PDFInfo
- Publication number
- CN221036977U CN221036977U CN202322871545.7U CN202322871545U CN221036977U CN 221036977 U CN221036977 U CN 221036977U CN 202322871545 U CN202322871545 U CN 202322871545U CN 221036977 U CN221036977 U CN 221036977U
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- Prior art keywords
- heat exchange
- heat
- pipe
- section
- flue
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 230000005494 condensation Effects 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the field of flue gas heat exchangers, and discloses a heat pipe heat exchanger for a vertical flue, which comprises a heat exchange pipe; the heat exchange pipe is obliquely arranged, the low section is positioned in the flue and serves as a heat exchange section, and the other section penetrates through the side wall of the flue and extends obliquely upwards to serve as a condensation section; the water connecting pipe is sleeved outside the condensation section; the heat exchange tubes are arranged side by side, the adjacent heat exchange tubes are arranged up and down, and the adjacent water connection tubes are alternately communicated end to end; the water inlet is arranged at the end of the bottom water connecting pipe, and the water outlet is arranged at the end of the top water connecting pipe. The device has a simple structure, and overhauling of the condensation section, the heat exchange section and the water connecting pipe can be performed step by step during later overhauling, so that overhauling and maintenance cost is effectively simplified, and meanwhile, the obliquely arranged heat exchange pipes can enable the heat exchange working medium at the low end to rise to the condensation section after absorbing heat and evaporating and flow back to the heat exchange section after releasing heat and condensing, so that the heat exchange area utilization rate and heat exchange efficiency are effectively increased.
Description
Technical Field
The utility model relates to the field of flue gas heat exchangers, in particular to a heat pipe heat exchanger for a vertical flue.
Background
At present, the technology for realizing flue gas waste heat recovery is the heat pipe heat exchanger technology, and compared with the conventional low-temperature economizer technology, the technology has the advantages of high heat transfer efficiency, long service life and better solving the problems of corrosion, abrasion and leakage of the low-temperature dew point.
The working principle of the heat pipe heat exchanger is that working medium circulates to the condensing section after absorbing heat in the heat exchange section of the heat exchange pipe, and circulates to the heat exchange section again after heat exchange between the condensing section and an external refrigerant medium, so that the circulating heat exchange is completed, and the temperature of a target object is reduced.
In the prior art, the heat exchanger is provided with a shell and tube type heat exchanger, a spiral plate type heat exchanger and the like, the heat exchange is realized by heat conduction of a metal wall, the heat efficiency is lower, and meanwhile, the structure is more complicated under the common condition, and the later maintenance and overhaul are very troublesome.
For this reason, a new heat pipe exchanger for a vertical flue is required to solve the above technical problems.
Disclosure of utility model
The utility model solves the technical problems that the existing heat exchanger realizes heat exchange by mostly relying on heat conduction of metal walls, has lower heat exchange efficiency, and has more complicated structure and difficult later maintenance.
In order to solve the technical problems, the utility model adopts the following technical scheme: a heat pipe heat exchanger for a vertical flue comprises a heat exchange pipe, wherein an inner heat exchange working medium is packaged in the heat exchange pipe, and high-temperature flue gas vertically passes through the heat exchange pipe from top to bottom in the flue; the heat exchange pipe is obliquely arranged, the low section is positioned in the flue and serves as a heat exchange section, and the other section penetrates through the side wall of the flue and extends obliquely upwards to serve as a condensation section; the water connecting pipe is sleeved outside the condensing section;
The heat exchange tubes are arranged side by side and are arranged up and down, and adjacent water connection tubes are alternately communicated end to end;
The water inlet is arranged at the end of the bottom water connecting pipe, and the water outlet is arranged at the end of the top water connecting pipe.
In particular, a heat exchange tube supporting rod which is obliquely arranged is respectively arranged above and below the heat exchange tube, and the heat exchange tube is sleeved on the heat exchange tube supporting rod through the heat exchange tube supporting plate.
In particular, the lower end of the heat exchange tube penetrates through the side wall of the heat exchange flue, and the exceeding section is sealed by a sealing plate.
Particularly, the heat exchange tube further comprises H-shaped fins arranged on the heat exchange section of the heat exchange tube, and the H-shaped fins are distributed along the vertical direction.
In particular, the top end of the heat exchange tube is also provided with a needle valve.
In particular, the volume ratio of the heat exchange working medium to the heat exchange tube is 1:3.
Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model has simple structure, and the overhauling of the condensation section, the heat exchange section and the water connecting pipe can be carried out step by step during the later overhauling, thereby effectively simplifying the overhauling and maintenance cost, and simultaneously, the obliquely arranged heat exchange pipe can ensure that the heat exchange working medium at the low end rises to the condensation section after absorbing heat and evaporating and flows back to the heat exchange section after releasing heat and condensing, thereby effectively increasing the heat exchange area utilization rate and the heat exchange efficiency.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present utility model.
FIG. 2 is a schematic view of a heat exchange tube and a water connection tube.
The definitions of the various numbers in the figures are: flue-1; a heat exchange tube-2; a water connecting pipe-3; a water inlet-4; a water outlet-5; a heat exchange tube supporting rod-6; a heat exchange tube support plate 7; sealing plate-8; h-shaped fins-9; needle valve-10.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, so as to further understand the concept of the present utility model, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought thereby.
As shown in fig. 1-2, the heat pipe heat exchanger for the vertical flue comprises a heat exchange pipe 2, an inner heat exchange working medium is packaged in the heat exchange pipe 2, and high-temperature flue gas vertically passes through the heat exchange pipe 2 from top to bottom in the flue 1; the heat exchange tube 2 is obliquely arranged, the low section is positioned in the flue 1 and used as a heat exchange section, and the other section penetrates through the side wall of the flue 1 and extends obliquely upwards to be used as a condensation section; the water connecting pipe 3 is sleeved outside the condensing section;
the heat exchange tubes 2 are arranged side by side and are vertically arranged, and the adjacent water connecting tubes 3 are alternately communicated end to end;
The water inlet 4 is arranged at the end of the bottom water connecting pipe 3, and the water outlet 5 is arranged at the end of the top water connecting pipe 3.
In the utility model, the working process is as follows: the high-temperature flue gas sequentially flows through the inlet flue, the heat exchange tube and the outlet flue from top to bottom, and when passing through the heat exchange tube 2, the high-temperature flue gas exchanges heat with the heat exchange working medium in the evaporation section of the heat exchange tube 2, and the flue gas after heat exchange flows out of the flue to complete flue gas waste heat recovery. In the process, the working medium in the evaporation section of the heat exchange tube 2 absorbs heat and then is vaporized, the working medium rises to the condensation section under the action of pressure difference and exchanges heat with the refrigerant in the water connecting tube 3 and then is condensed into liquid, the liquid drops back to the evaporation section again to complete a cycle, the refrigerant in the water connecting tube 3 enters along the water inlet 4 at the bottom, flows out from the water outlet 5 at the top after sequentially passing through all the water connecting tubes 3 in a diffuse manner to form refrigerant circulation, so that the refrigerant circulation is stripped from the flue, the circulation process of the refrigerant and the heat exchange working medium is changed into two relatively independent processes, and the later maintenance of each component is facilitated.
In particular, a heat exchange tube support rod 6 is arranged above and below the heat exchange tube 2 in an inclined manner, and the heat exchange tube 2 is sleeved on the heat exchange tube support rod 6 through a heat exchange tube support plate 7.
In this embodiment, the heat exchange tubes 2 are installed and fixed through the heat exchange tube support rods 6 and the heat exchange tube support plates 7 on the upper side and the lower side, so that the plurality of heat exchange tubes 2 can be fixed and installed at one time, and the installation flow is simplified.
In particular, the lower end of the heat exchange tube 2 penetrates through the side wall of the heat exchange flue 1, and the exceeding section is sealed by a sealing plate 8.
In this embodiment, the lower end of the heat exchange tube 2 also penetrates through the side wall of the heat exchange flue 1, so that the position and direction of the heat exchange tube 2 are more firmly fixed, and the sealing operation at the end is performed by the sealing plate 8, so that the tightness of the flue 1 is ensured.
In particular, the heat exchange tube further comprises H-shaped fins 9 arranged on the heat exchange section of the heat exchange tube 2, and the H-shaped fins 9 are distributed along the vertical direction.
In this embodiment, a fin structure is provided, as a conventional arrangement in the prior art, the H-shaped fins are generally arranged perpendicular to the axial direction of the heat exchange tube 2, but because the heat exchange tube 2 has an inclination, the arrangement of the fin structure does not coincide with the direction of the air flow, and has a certain angle, so that the fin produces disturbance to the high-temperature flue gas flow and affects the heat exchange efficiency, therefore, the H-shaped fin is strictly arranged along the vertical direction in this embodiment, so as to ensure the smoothness of the high-temperature flue gas flow, and avoid the problem of unsmooth flue gas flow.
In particular, the top end of the heat exchange tube 2 is also provided with a needle valve 10.
In this embodiment, the top end of the heat exchange tube 2 is provided with the needle valve 10, so that non-condensing gas in the heat exchange tube 2 can be effectively discharged through the needle valve 10, the vacuum degree in the heat exchange tube 2 is ensured, and the normal operation of the heat exchange tube 2 is ensured.
In particular, the volume ratio of the heat exchange working medium to the heat exchange tube 2 is 1:3.
The terms "connected" and "fixed" used in the description of the present utility model may be fixed, formed, welded, or mechanically connected, and the specific meaning of the terms in the present utility model is understood in specific cases.
In the description of the present utility model, the terms "center," "upper," "lower," "horizontal," "inner," "outer," and the like are used merely for convenience in describing the present utility model and to simplify the description, and do not denote or imply a particular orientation that the device or element in question must have, and thus should not be construed as limiting the utility model.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will appreciate that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. The heat pipe heat exchanger for the vertical flue is characterized by comprising a heat exchange pipe (2), wherein an inner heat exchange working medium is encapsulated in the heat exchange pipe (2), and high-temperature flue gas vertically passes through the heat exchange pipe (2) from top to bottom in the flue (1); the heat exchange tube (2) is obliquely arranged, the low section is positioned in the flue (1) and used as a heat exchange section, and the other section penetrates through the side wall of the flue (1) and extends obliquely upwards to be used as a condensation section; the water connecting pipe (3) is sleeved outside the condensing section;
The heat exchange tubes (2) are arranged up and down, and adjacent water connecting tubes (3) are alternately communicated end to end;
the water inlet (4) is arranged at the end of the bottom water connecting pipe (3) and the water outlet (5) is arranged at the end of the top water connecting pipe (3).
2. A heat pipe heat exchanger for a vertical flue according to claim 1, wherein a heat pipe support rod (6) is arranged above and below the heat pipe (2), and the heat pipe (2) is sleeved on the support rod of the heat pipe (2) through a heat pipe support plate (7).
3. A heat pipe heat exchanger for a vertical stack according to claim 1, characterized in that the lower end of the heat exchange pipe (2) extends through the side wall of the heat exchange stack (1), the excess being sealed by a sealing plate (8).
4. A heat pipe heat exchanger for a vertical flue according to claim 1, further comprising H-fins (9) provided on the heat exchange section of the heat exchange pipe (2), the H-fins (9) being arranged in the vertical direction.
5. A heat pipe heat exchanger for a vertical flue according to claim 1, characterised in that the top end of the heat exchange pipe (2) is also provided with a needle valve (10).
6. A heat pipe heat exchanger for a vertical flue according to claim 1, characterised in that the volume ratio of heat exchanging medium to heat exchanging pipe (2) is 1:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322871545.7U CN221036977U (en) | 2023-10-25 | 2023-10-25 | Heat pipe heat exchanger for vertical flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322871545.7U CN221036977U (en) | 2023-10-25 | 2023-10-25 | Heat pipe heat exchanger for vertical flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221036977U true CN221036977U (en) | 2024-05-28 |
Family
ID=91181280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322871545.7U Active CN221036977U (en) | 2023-10-25 | 2023-10-25 | Heat pipe heat exchanger for vertical flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221036977U (en) |
-
2023
- 2023-10-25 CN CN202322871545.7U patent/CN221036977U/en active Active
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