CN109780921B - Defrosting device for intensive heat exchanger - Google Patents
Defrosting device for intensive heat exchanger Download PDFInfo
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- CN109780921B CN109780921B CN201811591753.9A CN201811591753A CN109780921B CN 109780921 B CN109780921 B CN 109780921B CN 201811591753 A CN201811591753 A CN 201811591753A CN 109780921 B CN109780921 B CN 109780921B
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- bottom plate
- methanol
- ring support
- heat exchanger
- support plate
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Abstract
The invention provides a defrosting device for an intensive heat exchanger, wherein a bottom plate of the device is a circular plate provided with a first circular through hole, an outer ring support plate is positioned on the opposite side of the bottom plate and is in a circular ring shape, the diameter of the outer ring support plate is the same as that of the bottom plate, a plurality of methanol injection pipes are annularly fixed between the bottom plate and the outer ring support plate at equal intervals, an inner ring support plate is positioned inside the outer ring support plate, a plurality of methanol absorption pipes are fixed between the bottom plate and the inner ring support plate, and the part of the bottom plate, which is positioned between the outer ring support. The problem of prior art do not have the defroster that matches with the intensive heat exchanger is solved, provide a defroster for intensive heat exchanger, utilize the volatility and the intersolubility of methyl alcohol liquid, reduce the temperature and the partial pressure of vapor in the inside air of heat exchanger for the air passes through the heat exchanger fast and does not produce and frosts, thereby reduces the risk that microchannel heat exchanger produces the heat exchange efficiency loss because frosting.
Description
Technical Field
The invention relates to a defrosting device for an intensive heat exchanger, and belongs to the technical field of heat exchange equipment.
Background
Because the heat exchanger adopts low-temperature liquid helium as a coolant, water vapor in the air can be frozen within seconds when passing through the heat exchanger. During cooling, a large amount of liquid phase water is precipitated and must be discharged from the heat exchanger before freezing, and with the sudden contact of the heat exchanger body with air, measures must be taken to prevent frost formation from these water vapors.
The intensive tubular heat exchanger has become an important new direction for the research of the current heat exchanger due to the advantages of small volume and light weight, but the intensive tubular heat exchanger has a complex and fine structure, so that the defrosting problem of the heat exchanger is still a difficult problem while the heat exchange efficiency is met.
Disclosure of Invention
The invention solves the problem that the prior art has no defrosting device matched with the intensive heat exchanger, and provides the defrosting device for the intensive heat exchanger.
The invention provides a defrosting device for an intensive heat exchanger, which comprises a plurality of methanol injection pipes, a plurality of methanol absorption pipes, a bottom plate, an outer ring support plate and an inner ring support plate, wherein the bottom plate is a circular plate provided with a first circular through hole, the outer ring support plate is positioned on the opposite side of the bottom plate and is in a circular ring shape, the diameter of the outer ring support plate is the same as that of the bottom plate, the plurality of methanol injection pipes are annularly fixed between the bottom plate and the outer ring support plate at equal intervals, the inner ring support plate is positioned inside the outer ring support plate, the plurality of methanol absorption pipes are fixed between the bottom plate and the inner ring support plate, and the part of the bottom plate, which is.
Preferably, the dense tube bundle heat exchange part of the dense heat exchanger is longitudinally arranged between the annular methanol injection tube and the annular methanol absorption tube and penetrates out of the first circular through hole of the bottom plate.
Preferably, the methanol injection tube is provided with micro-holes on the inner side for releasing methanol.
Preferably, through holes II are uniformly formed in the outer ring supporting plate, and the positions and the number of the through holes II correspond to those of the methanol injection pipes.
Preferably, one end of the methanol injection pipe is fixedly connected with the bottom plate and is sealed by the bottom plate, and the other end of the methanol injection pipe is fixed with the second annular through hole of the outer ring support plate and is communicated with the outside.
Preferably, the inner ring support plate is uniformly provided with third through holes, and the positions and the number of the third through holes correspond to those of the methanol absorption tubes.
Preferably, one end of the methanol injection pipe is fixedly connected with the bottom plate and is sealed by the bottom plate, and the other end of the methanol injection pipe is fixed with the annular through hole III of the inner ring support plate and is communicated with the outside.
Preferably, the methanol absorption pipe is surrounded by a stainless steel net.
Preferably, the methanol absorption tube is externally covered with a hydrophilic coating.
The working principle of the defrosting device for the intensive heat exchanger is as follows:
according to the invention, a set of heat exchanger defrosting device is additionally arranged in the air advancing direction of the dense tube type heat exchanger, inlet air is mixed into methanol liquid, the temperature and the partial pressure of water vapor in the air in the heat exchanger are reduced by utilizing the volatility and the intersolubility of the methanol liquid, and a methanol collecting device covered with a hydrophilic coating is arranged at an air outlet, so that methanol is removed for recycling, the air can rapidly pass through the heat exchanger without frosting, and the loss of heat exchange efficiency of the micro-channel heat exchanger caused by frosting is reduced.
The defrosting device for the intensive heat exchanger has the beneficial effects that: set up one set of heat exchanger defroster in the microchannel heat exchanger, utilized the volatility and the intersolubility of methyl alcohol liquid, reduced the temperature and the partial pressure of vapor in the inside air of heat exchanger for the air passes through the heat exchanger fast and does not produce and frosts, thereby reduces the risk that the microchannel heat exchanger produces the heat exchange efficiency loss owing to frosting. The invention has simple structure and convenient operation.
Drawings
FIG. 1 is a first schematic view of the structure of the defrosting device for the dense heat exchanger of the invention matched with the dense heat exchanger;
FIG. 2 is a schematic view showing a second configuration of the defrosting apparatus for a dense heat exchanger according to the present invention in cooperation with the dense heat exchanger;
FIG. 3 is a front view of the base plate of the defrosting apparatus for a dense heat exchanger according to the present invention;
FIG. 4 is a schematic view showing the construction of a defrosting apparatus for a dense heat exchanger according to the present invention;
FIG. 5 is a schematic view showing the construction of a methanol injection pipe of the defrosting apparatus for a dense heat exchanger according to the present invention;
FIG. 6 is a schematic view showing the construction of a methanol absorption tube of the defrosting apparatus for a dense type heat exchanger according to the present invention;
reference numerals: 1-methanol injection tube; 2-a dense tube bundle heat exchange part; 3-methanol absorption tube; 4-a bottom plate; 5-support plate.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 6. This embodiment a defroster for intensive heat exchanger include a plurality of methyl alcohol injection pipes 1, a plurality of methyl alcohol absorption tube 3, bottom plate 4, outer loop backup pad 5 and inner ring backup pad 6, bottom plate 4 is the plectane for being provided with circular through-hole, outer loop backup pad 5 is located the offside of bottom plate 4, the ring shape, and the diameter is the same with bottom plate 4, and is a plurality of methyl alcohol injection pipe 1 equidistant annular is fixed in between bottom plate 4 and the outer loop backup pad 5, inner ring backup pad 6 is located the inside of outer loop backup pad 5, and is a plurality of methyl alcohol absorption tube 3 is fixed in between bottom plate 4 and the inner ring backup pad 6, the part that lies in between outer loop backup pad 5 and inner ring backup pad 6 on bottom plate 4 is provided with evenly distributed's through.
The dense tube bundle heat exchange part 2 of the dense heat exchanger is longitudinally arranged between the annular methanol injection tube 1 and the methanol absorption tube 3 and penetrates out of the first circular through hole of the bottom plate 4.
The outer side of the dense tube bundle heat exchange part 2 is provided with a methanol injection tube 1 which is distributed in a circular ring, and the inner side is provided with a methanol absorption tube 3 which is distributed in a circular ring.
The methanol injection tube 1 is provided with micro holes on the inner side for releasing methanol, as shown in fig. 5.
And through holes II are uniformly formed in the outer ring supporting plate 5, and the positions and the number of the through holes II correspond to those of the methanol injection pipes 1. One end of the methanol injection pipe 1 is fixedly connected with the bottom plate 4 and is sealed by the bottom plate 4, and the other end of the methanol injection pipe is fixed with the annular through hole II of the outer ring supporting plate 5 and is communicated with the outside.
The other end of the methanol injection pipe 1 is connected with a methanol injection pump, and methanol is pumped into the methanol injection pipe 1 by the pump and flows into the air flow through the micropores to absorb moisture in the air flow so as to reduce the partial pressure of water vapor.
And the inner ring support plate 6 is uniformly provided with third through holes, and the positions and the number of the third through holes correspond to those of the methanol absorption tubes 3. One end of the methanol injection pipe 3 is fixedly connected with the bottom plate 4 and is sealed by the bottom plate 4, and the other end of the methanol injection pipe is fixed with the annular through hole III of the inner ring support plate 6 and is communicated with the outside.
The methanol absorption pipe 3 is surrounded by a stainless steel net. The methanol absorption tube 3 is externally covered with a hydrophilic coating.
The methanol absorption pipe 3 is surrounded by stainless steel mesh and is arranged at the air outlet of the heat exchanger to recycle the methanol solution in the passing air, and the surface of the methanol absorption pipe can be covered with a hydrophilic coating to increase the absorption rate, as shown in fig. 6.
The operation process of the defrosting device for the intensive heat exchanger comprises the following steps:
the heat exchanger mainly comprises three parts, namely a methanol injection pipe 1 at the outer side of a circular ring part, a heat exchange part 2 at the middle dense pipe bundle and an inner methanol absorption pipe 3. The air flows into the inner ring from the outer ring and then is discharged out of the heat exchanger, and sequentially passes through the methanol injection pipe 1, the dense tube bundle heat exchange part 2 and the methanol absorption pipe 3. One side of the outer methanol injection pipe 1 is sealed by a bottom plate 4, the other side of the outer methanol injection pipe is communicated with a methanol injection pump, and pumped methanol enters the heat exchanger through the side micropores; the heat exchange part 2 of the middle-side dense tube bundle is communicated in two directions, and cooling liquid (such as liquid helium) is introduced into the tubes to cool air; one side of the inner methanol absorption pipe 3 is sealed by a bottom plate 4, and the other side is communicated with a vacuum pump for absorbing methanol solution in outlet air.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A defrosting device for an intensive heat exchanger is characterized by comprising a plurality of methanol injection pipes (1), a plurality of methanol absorption pipes (3), a bottom plate (4), an outer ring support plate (5) and an inner ring support plate (6), the bottom plate (4) is a circular plate provided with a circular through hole, the outer ring support plate (5) is positioned on the opposite side of the bottom plate (4) and is in a circular ring shape, the diameter of the injection tube is the same as that of the bottom plate (4), a plurality of methanol injection tubes (1) are annularly fixed between the bottom plate (4) and the outer ring support plate (5) at equal intervals, the inner ring supporting plate (6) is positioned inside the outer ring supporting plate (5), the plurality of methanol absorption tubes (3) are fixed between the bottom plate (4) and the inner ring supporting plate (6), through holes I are uniformly distributed on the bottom plate (4) between the outer ring support plate (5) and the inner ring support plate (6);
a dense tube bundle heat exchange part (2) of the dense heat exchanger is longitudinally arranged between the annular methanol injection tube (1) and the methanol absorption tube (3) and penetrates out of the first circular through hole of the bottom plate (4);
the inner side of the methanol injection pipe (1) is provided with micropores for releasing methanol;
one end of the methanol injection pipe (1) is fixedly connected with the bottom plate (4) and is sealed by the bottom plate (4), and the other end of the methanol injection pipe is fixed with the annular through hole II of the outer ring support plate (5) and is communicated with the outside;
one end of the methanol absorption pipe (3) is fixedly connected with the bottom plate (4) and is sealed by the bottom plate (4), and the other end of the methanol absorption pipe is fixed with the annular through hole III of the inner ring support plate (6), is communicated with the outside and is connected with a vacuum pump;
the methanol absorption pipe (3) is formed by surrounding a stainless steel net;
a hydrophilic coating is covered outside the methanol absorption tube (3);
through holes II are uniformly formed in the outer ring supporting plate (5), and the positions and the number of the through holes II correspond to those of the methanol injection pipes (1);
and the inner ring support plate (6) is uniformly provided with third through holes, and the positions and the number of the third through holes correspond to those of the methanol absorption tubes (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591753.9A CN109780921B (en) | 2018-12-25 | 2018-12-25 | Defrosting device for intensive heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591753.9A CN109780921B (en) | 2018-12-25 | 2018-12-25 | Defrosting device for intensive heat exchanger |
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| Publication Number | Publication Date |
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| CN109780921A CN109780921A (en) | 2019-05-21 |
| CN109780921B true CN109780921B (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811591753.9A Active CN109780921B (en) | 2018-12-25 | 2018-12-25 | Defrosting device for intensive heat exchanger |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105637314A (en) * | 2013-10-11 | 2016-06-01 | 喷气发动机有限公司 | Heat exchanger |
| CN107218133A (en) * | 2017-05-25 | 2017-09-29 | 中国人民解放军装备学院 | A kind of precooling airbreathing motor high-efficiency compact precool heat exchanger device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110030391A1 (en) * | 2009-08-06 | 2011-02-10 | Woodside Energy Limited | Mechanical Defrosting During Continuous Regasification of a Cryogenic Fluid Using Ambient Air |
| CN105860932A (en) * | 2016-06-06 | 2016-08-17 | 广东莱雅化工有限公司 | Ice-removing aerosol |
| CN106382834A (en) * | 2016-11-17 | 2017-02-08 | 天津市千罡燃气设备技术有限公司 | LNG room temperature gasifier |
| CN206730791U (en) * | 2017-01-26 | 2017-12-12 | 上海聚宸新能源科技有限公司 | A kind of adsorption condensing device of band defrosting |
-
2018
- 2018-12-25 CN CN201811591753.9A patent/CN109780921B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105637314A (en) * | 2013-10-11 | 2016-06-01 | 喷气发动机有限公司 | Heat exchanger |
| CN107218133A (en) * | 2017-05-25 | 2017-09-29 | 中国人民解放军装备学院 | A kind of precooling airbreathing motor high-efficiency compact precool heat exchanger device |
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| CN109780921A (en) | 2019-05-21 |
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