CN116222275A - Heat pipe of heat exchanger with vertical arrangement and difficult ash accumulation - Google Patents
Heat pipe of heat exchanger with vertical arrangement and difficult ash accumulation Download PDFInfo
- Publication number
- CN116222275A CN116222275A CN202310304346.XA CN202310304346A CN116222275A CN 116222275 A CN116222275 A CN 116222275A CN 202310304346 A CN202310304346 A CN 202310304346A CN 116222275 A CN116222275 A CN 116222275A
- Authority
- CN
- China
- Prior art keywords
- parts
- heat exchanger
- heat pipe
- vertically arranged
- fin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009825 accumulation Methods 0.000 title claims description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 21
- 230000008020 evaporation Effects 0.000 claims abstract description 20
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 229910052582 BN Inorganic materials 0.000 claims description 12
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 239000003945 anionic surfactant Substances 0.000 claims description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 5
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Geometry (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a heat pipe of a heat exchanger, which is arranged vertically and is not easy to accumulate ash, and the heat pipe comprises a base pipe, wherein the base pipe is divided into an evaporation section, a condensation section and an insulation section positioned between the evaporation section and the condensation section along the length direction of the base pipe, fins are arranged on the evaporation section, the fins are in an inclined state with low outer edges and high inner edges, and the fins on the lee surface of the evaporation section are provided with saw teeth.
Description
[ field of technology ]
The invention relates to the technical field of heat pipe low-temperature economizers, in particular to the technical field of heat pipes of heat exchangers which are vertically arranged and are not easy to accumulate ash.
[ background Art ]
In recent years, a water sleeve heat pipe heat exchanger is beginning to be applied to a low-temperature economizer, because the heat pipes are divided into a hot end and a cold end, the hot end of the heat pipe low-temperature economizer is arranged on the inner side of a flue, the cold end of the heat pipe is arranged on the outer side of the flue, the cold end of each heat pipe is provided with a water sleeve, and then the water sleeve is connected in series with a small-diameter pipe so as to achieve circulation of cooling water, thereby greatly avoiding the leakage problem of the traditional low-temperature economizer and enabling the heat pipe low-temperature economizer to continuously operate for a long time. The hot end fins are H-shaped fins, spiral fins, integrally rolled fins, saw-tooth fins and the like. Spiral fins and zigzag fins are mainly used in the vertically arranged heat pipe exchanger.
Due to the structural characteristics of the heat pipe heat exchanger, the vertical arrangement is a main form of the heat pipe heat exchanger. Because traditional fin is perpendicular to base pipe surface mounting, so when the heat pipe erects the installation, the fin plane of originally perpendicular to base pipe surface just becomes the direction of horizontal plane, and traditional structure in long-term operation, the dust in the flue gas can accumulate on the plane of fin, especially leeward face, forms the deposition, hardly clears away, influences heat exchange efficiency. Accumulated ash becomes more serious and forms a bridge, so that the resistance of equipment is greatly increased.
[ invention ]
The invention aims to solve the problems in the prior art, and provides a heat pipe of a heat exchanger which is arranged vertically and is not easy to accumulate ash, so that the heat exchange area is increased.
In order to achieve the above purpose, the invention provides a heat pipe of a heat exchanger, which is arranged vertically and is not easy to accumulate ash, and the heat pipe comprises a base pipe, wherein the base pipe is divided into an evaporation section, a condensation section and an insulation section positioned between the evaporation section and the condensation section along the length direction of the base pipe, fins are arranged on the evaporation section, the fins are in an inclined state with the outer side low and the inner side high, and sawteeth are arranged on the fins on the lee surface of the evaporation section.
Preferably, the fins have a spiral structure with a lower outer edge and a higher inner edge.
Preferably, the included angle a between the upper surface of the fin and the horizontal plane is 15-60 degrees.
Preferably, the included angle a is 60 °.
Preferably, the inner edges of the fins are welded with the evaporation section.
Preferably, the saw teeth on the fins are arranged in a one-to-one correspondence from top to bottom.
Preferably, the upper surface of the fin is provided with a dustproof heat conduction coating, and the dustproof heat conduction coating comprises the following components in parts by mass: polytetrafluoroethylene: 60-70 parts of epoxy resin: 40-50 parts of hexagonal boron nitride: 15-20 parts of aluminum nitride: 10-15 parts of cubic boron nitride: 10-15 parts of silane coupling agent: 5-8 parts of anionic surfactant: 3-5 parts.
Preferably, the dustproof heat-conducting coating comprises the following components in parts by mass: polytetrafluoroethylene: 65 parts of epoxy resin: 45 parts of hexagonal boron nitride: 18 parts of aluminum nitride: 12 parts of cubic boron nitride: 13 parts of silane coupling agent: 6 parts and anionic surfactant: 4 parts.
The invention has the beneficial effects that: according to the invention, the fins are in an inclined state with the outer side low and the inner side high, the fins on the leeward side of the evaporation section are provided with the saw teeth, so that ash deposition is easier to occur on the leeward side of the traditional vertical heat pipe compared with the windward side, and the saw teeth are arranged on the leeward side, so that ash deposition in leeward area can be further prevented, and compared with the prior art, the heat exchange area can be increased.
The upper surface through the fin is equipped with dustproof heat conduction coating, further reduces the laying dust effect of fin. Through the cooperation of epoxy resin, hexagonal boron nitride, aluminum nitride, cubic boron nitride, a silane coupling agent and an anionic surfactant, the heat-exchange coating has extremely low friction coefficient and extremely good non-stick characteristic, so that dust is not easy to adhere, if a small amount of dirt is adhered, the dust can be removed by simple wiping, working hours are saved, the working efficiency can be improved, the heat-exchange coating also has higher heat-conducting property, the heat-exchange effect is guaranteed, and the coating adhesion effect is good.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of a heat pipe of a heat exchanger with a vertical arrangement which is not prone to dust accumulation;
fig. 2 is a cross-sectional view of A-A in fig. 1.
In the figure: 1-base tube, 2-fin, 3-sawtooth, 4-dustproof heat conduction coating, 11-evaporation section, 12-condensation section, 13-heat insulation section.
[ detailed description ] of the invention
Referring to fig. 1 and 2, the heat pipe of the heat exchanger, which is not easy to accumulate ash, comprises a base pipe 1, wherein the base pipe 1 is divided into an evaporation section 11, a condensation section 12 and a heat insulation section 13 positioned between the evaporation section 11 along the length direction of the base pipe, a fin 2 is arranged on the evaporation section 11, the fin 2 is in an inclined state with a low outer side and a high inner side, a sawtooth 3 is arranged on a fin 2 on a leeward side of the evaporation section 11, the fin 2 is in a spiral structure with the low outer side and the high inner side, an included angle a between the upper surface of the fin 2 and a horizontal plane is 15-60 degrees, the included angle a is 60 degrees, the inner side of the fin 2 is welded with the evaporation section 11, the sawtooth 3 on the fin 2 is arranged in a one-to-one correspondence from top to-bottom, a dustproof heat conducting coating 4 is arranged on the upper surface of the fin 2, and the dustproof heat conducting coating 4 comprises the following components in mass ratio: polytetrafluoroethylene: 65 parts of epoxy resin: 45 parts of hexagonal boron nitride: 18 parts of aluminum nitride: 12 parts of cubic boron nitride: 13 parts of silane coupling agent: 6 parts and anionic surfactant: 4 parts, tilt angle: the heat exchange area correspondingly increased by 15-60 degrees is 3.4-50%.
The working process of the invention comprises the following steps:
in the working process of the heat exchanger heat pipe which is not easy to accumulate ash and is vertically arranged, the fins 2 form an angle favorable for ash discharging with the base pipe 1 by adopting the inclined state that the outer edges are low and the inner edges are high, and the fins 2 on the leeward surface of the evaporation section 11 are provided with the saw teeth 3.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (8)
1. A heat exchanger heat pipe which is not easy to accumulate ash is vertically arranged, which is characterized in that: including basic tube (1), basic tube (1) divide into evaporation zone (11), condensation segment (12) and be located adiabatic section (13) between the two along its length direction, be equipped with fin (2) on evaporation zone (11), fin (2) are outside low and inside high incline state, be equipped with sawtooth (3) on fin (2) of evaporation zone (11) lee face.
2. A vertically arranged heat exchanger heat pipe which is not prone to ash accumulation as claimed in claim 1 wherein: the fins (2) are of a spiral structure with low outer edges and high inner edges.
3. A vertically arranged heat exchanger heat pipe which is not prone to ash accumulation as claimed in claim 2 wherein: the included angle a between the upper surface of the fin (2) and the horizontal plane is 15-60 degrees.
4. A vertically arranged heat exchanger heat pipe which is not prone to ash accumulation as claimed in claim 3 wherein: the included angle a is 60 °.
5. A vertically arranged heat exchanger heat pipe which is not prone to ash accumulation as claimed in claim 2 wherein: the inner edges of the fins (2) are welded with the evaporation section (11).
6. A vertically arranged heat exchanger heat pipe which is not prone to ash accumulation as claimed in claim 1 wherein: the saw teeth (3) on the fins (2) are arranged in a one-to-one correspondence from top to bottom.
7. A vertically arranged heat exchanger heat pipe which is not prone to ash accumulation as claimed in claim 1 wherein: the upper surface of fin (2) is equipped with dustproof heat conduction coating (4), dustproof heat conduction coating (4) include following component and the mass ratio of each component is: polytetrafluoroethylene: 60-70 parts of epoxy resin: 40-50 parts of hexagonal boron nitride: 15-20 parts of aluminum nitride: 10-15 parts of cubic boron nitride: 10-15 parts of silane coupling agent: 5-8 parts of anionic surfactant: 3-5 parts.
8. A vertically arranged heat exchanger heat pipe which is less prone to ash accumulation as in claim 7 wherein: the dustproof heat-conducting coating (4) comprises the following components in parts by mass: polytetrafluoroethylene: 65 parts of epoxy resin: 45 parts of hexagonal boron nitride: 18 parts of aluminum nitride: 12 parts of cubic boron nitride: 13 parts of silane coupling agent: 6 parts and anionic surfactant: 4 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310304346.XA CN116222275A (en) | 2023-03-21 | 2023-03-21 | Heat pipe of heat exchanger with vertical arrangement and difficult ash accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310304346.XA CN116222275A (en) | 2023-03-21 | 2023-03-21 | Heat pipe of heat exchanger with vertical arrangement and difficult ash accumulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116222275A true CN116222275A (en) | 2023-06-06 |
Family
ID=86580643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310304346.XA Pending CN116222275A (en) | 2023-03-21 | 2023-03-21 | Heat pipe of heat exchanger with vertical arrangement and difficult ash accumulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116222275A (en) |
-
2023
- 2023-03-21 CN CN202310304346.XA patent/CN116222275A/en active Pending
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| PB01 | Publication | ||
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