CN221036933U - Cold energy recovery is with getting cold heat exchanger - Google Patents
Cold energy recovery is with getting cold heat exchanger Download PDFInfo
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- CN221036933U CN221036933U CN202322144560.1U CN202322144560U CN221036933U CN 221036933 U CN221036933 U CN 221036933U CN 202322144560 U CN202322144560 U CN 202322144560U CN 221036933 U CN221036933 U CN 221036933U
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- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims abstract description 115
- 239000012530 fluid Substances 0.000 claims abstract description 108
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 230000008014 freezing Effects 0.000 claims abstract description 9
- 238000007710 freezing Methods 0.000 claims abstract description 9
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims abstract 2
- 238000001704 evaporation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000009834 vaporization Methods 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 7
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 239000003949 liquefied natural gas Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The cold energy recovery cold-taking heat exchanger is used for efficiently transferring gasified cold energy of low-temperature liquid to a secondary refrigerant and comprises a shell, a right end socket, a cold fluid heat exchange tube, a left end socket and a hot fluid heat exchange tube, wherein the right end of the shell is provided with a right pair of flanges for being connected with the right end socket; the left end is equipped with left paired flange for be connected with left head, be equipped with the polylith backup pad in the casing, seted up in the casing below and filled the mouth, middle refrigerant liquid has gas-liquid conversion characteristic and its freezing point's temperature is less than the temperature of low temperature liquid, and its effect is with the cold energy of low temperature liquid high-efficiently transfer to the secondary refrigerant, the casing below is equipped with the supporting legs for be fixed in ground with the heat exchanger is stable. The utility model can be used for replacing the prior complex cooling system and has the advantages of simple structure, convenient use, high efficiency of heat exchange, stable operation and the like.
Description
Technical Field
The utility model relates to the field of refrigeration equipment for cold energy recovery, in particular to a cold energy recovery heat exchanger.
Background
Many cryogenic liquids, such as Liquefied Natural Gas (LNG), liquid oxygen, liquid nitrogen, liquid argon, liquid air, ethylene liquid, ethane liquid, propane liquid, carbon dioxide liquid, etc., require vaporization prior to some applications, and a large amount of cold energy is released during vaporization, which if not utilized, would result in significant energy waste and unavoidable cold pollution to the surrounding environment. If the part of cold energy is taken out and applied to occasions needing cold energy, environmental pollution can be avoided and huge economic benefits are generated.
When the refrigerating fluid is taken, the refrigerating fluid is adopted to obtain the cold energy of the low-temperature liquid and is conveyed to the cold point for cooling, and after the temperature of the refrigerating fluid absorbing heat at the cold point is increased, the refrigerating fluid returns to continuously exchange heat with the low-temperature liquid and circulates. The secondary refrigerant can be brine, glycol solution, silicone oil, common refrigerant, hydrocarbon, carbon dioxide, etc. If a method of directly exchanging heat between the secondary refrigerant and low-temperature liquid in a heat exchanger is adopted, the heat exchange temperature difference between the secondary refrigerant and the low-temperature liquid is large, and the problems of freezing and blocking or poor heat exchange of the secondary refrigerant and the like easily occur, so that the heat exchanger cannot work normally. Therefore, the industry generally adopts a mode of circulating the middle refrigerant, the cold energy of the low-temperature liquid is transmitted to the middle refrigerant through the heat exchanger, the pump drives the middle refrigerant liquid to circularly flow, and the cold energy enters the other heat exchanger to be transmitted to the secondary refrigerant to finish the cold taking process. However, the intermediate refrigerant circulation is a whole set of device, the number of equipment is more, the investment is increased, and the simplicity and the reliability of operation control are definitely inferior to those of a single heat exchanger. For this purpose, a cold energy recovery heat exchanger is designed to simplify the equipment.
Disclosure of Invention
The utility model aims to overcome the defects, and provides the cold energy recovery heat exchanger which can replace a complex intermediate refrigerant cycle of a system, efficiently transfer the gasified cold energy of low-temperature liquid to the secondary refrigerant and well solve the problems of freezing and poor heat exchange which are easy to occur when the secondary refrigerant exchanges heat with the low-temperature liquid in the heat exchanger. The secondary refrigerant and the low-temperature liquid flow in the two heat exchange tubes respectively, the two heat exchange tubes are arranged in the shell filled with the gas and the liquid of the middle refrigerant in an up-down separated mode, and the secondary refrigerant and the low-temperature liquid exchange heat indirectly through the middle refrigerant.
The utility model aims at being completed by the following technical scheme: the cold energy recovery cold-taking heat exchanger is used for efficiently transferring gasified cold energy of low-temperature liquid to a secondary refrigerant and comprises a shell, a right end socket, a cold fluid heat exchange tube, a left end socket and a hot fluid heat exchange tube, wherein the right end of the shell is provided with a right pair of flanges which are used for being connected with the right end socket; the left end is provided with a left pair of flanges which are used for being connected with a left end socket, a plurality of supporting plates which are used for supporting and fixing the cold fluid heat exchange tube and the hot fluid heat exchange tube are arranged in the shell, a filling opening is formed below the shell and used for filling middle refrigerant liquid into the shell, when the heat exchanger works, the middle refrigerant liquid floods the hot fluid heat exchange tube, the middle refrigerant liquid absorbs heat and then is vaporized into middle refrigerant evaporating gas, the evaporating gas is filled around the cold fluid heat exchange tube, is cooled by the cold fluid heat exchange tube and condensed into liquid, and returns to the middle refrigerant liquid. The middle refrigerant liquid has gas-liquid conversion characteristic, the temperature of the freezing point of the middle refrigerant liquid is lower than that of the low-temperature liquid, the middle refrigerant liquid is used for efficiently transferring the cold of the low-temperature liquid to the refrigerating medium, and supporting feet are arranged below the shell and used for stably fixing the heat exchanger on the ground.
As preferable: the cold fluid separation partition plate is arranged in the cold fluid heat exchange tube and is fixed above the inside of the shell body through the supporting plate and is positioned in middle refrigerant evaporation gas and used for transmitting cold energy of low-temperature liquid to middle refrigerants, the cold fluid fixing tube plate is arranged between the shell body and the right end enclosure and separates two parts of space, and the cold fluid heat exchange tube passes through the cold fluid fixing tube plate and is communicated with the inner space of the right end enclosure.
As preferable: the hot fluid heat exchange tube is fixed below the inner part of the shell through a supporting plate, is immersed in middle refrigerants and used for transferring cold energy obtained by the middle refrigerants from low-temperature liquid to the refrigerating medium, a hot fluid fixed tube plate is arranged between the shell and the left end enclosure to separate two parts of space, and the hot fluid heat exchange tube passes through the hot fluid fixed tube plate and is communicated with the inner space of the left end enclosure.
As preferable: the cold fluid heat exchange tube is arranged in the upper area in the shell, the hot fluid heat exchange tube is arranged in the lower area of the shell, so that the upper middle refrigerant can flow downwards when meeting cold, a large number of bubbles can be generated by vaporization of the lower middle refrigerant when meeting heat, convection disturbance can be formed in the middle refrigerant, and the heat exchange process between the fluids can be enhanced.
As preferable: the cold fluid heat exchange tube and the hot fluid heat exchange tube can be U-shaped tubes or coiled tubes, or heat exchange tubes and types with higher heat exchange efficiency can be selected.
As preferable: the cold fluid heat exchange tube and the hot fluid heat exchange tube can be threaded tubes made of red copper, micro ribs can be arranged on the inner wall and the outer wall of the threaded tubes, and the arrangement of the micro ribs can increase the heat exchange area so as to improve the heat exchange efficiency.
As preferable: the connection mode of the cold fluid inlet, the cold fluid outlet, the hot fluid inlet and the hot fluid outlet and the outer pipe of the equipment can be not limited to flange connection or welded connection.
As preferable: the shell can be slightly larger than the conventional design, the filling amount of the middle refrigerant in the shell is increased, and the thermal inertia of the middle refrigerant is increased, so that the temperature fluctuation when the low-temperature liquid cold quantity is absorbed is reduced, the temperature of the middle refrigerant is easier to control, the temperature of the secondary refrigerant is not too low, and the problem of freezing the secondary refrigerant when the secondary refrigerant exchanges heat with the middle refrigerant is avoided.
Particularly, the cold-taking heat exchanger provided by the utility model can replace the existing intermediate refrigerant circulation to take cold from low-temperature liquid, and a set of device is replaced by single equipment, so that the cold-taking equipment is simplified, the cost and maintenance difficulty can be reduced, and the running reliability of the system is improved.
Particularly, the cooling heat exchanger provided by the utility model can be flexibly applied in engineering application such as single application, multiple series connection or parallel connection or series-parallel connection.
The cold energy recovery heat exchanger provided by the utility model can replace complex intermediate refrigerant circulation of a system, efficiently transfer gasified cold energy of low-temperature liquid to the secondary refrigerant, well solve the problems of freezing and poor heat exchange easily occurring when the secondary refrigerant exchanges heat with the low-temperature liquid in the heat exchanger, wherein the secondary refrigerant and the low-temperature liquid respectively flow in two heat exchange tubes which are vertically arranged in a shell filled with intermediate refrigerant gas-liquid in a separated mode, and the secondary refrigerant and the low-temperature liquid exchange heat indirectly through the intermediate refrigerant.
Drawings
Fig. 1 is a schematic flow chart of a conventional intermediate refrigerant circulation cooling method.
Fig. 2 is a schematic structural view of a cold energy recovery heat exchanger according to the present utility model.
Detailed Description
In the description of the present patent, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate refrigerant. The specific meaning of the terms in the present patent will be understood by those skilled in the art in specific cases.
As shown in fig. 1, the conventional intermediate refrigerant circulating and cooling mode includes a first heat exchanger E1, a circulating pump P1, and a second heat exchanger E2, wherein the devices are connected by a pipeline, and the pipeline is filled with the intermediate refrigerant. The circulating pump P1 drives the intermediate refrigerant to circulate between the first heat exchanger E1 and the second heat exchanger E2, the low-temperature liquid supplies cold to the intermediate refrigerant in the first heat exchanger E1, and the intermediate refrigerant transfers cold to the coolant in the second heat exchanger E2.
As shown in fig. 2, the cold energy recovery heat exchanger provided by the utility model can replace the above-mentioned middle refrigerant circulation, and comprises a shell 100, a right end enclosure 200, a cold fluid heat exchange tube 300, a left end enclosure 400 and a hot fluid heat exchange tube 500, wherein the right end of the shell 100 is provided with a right pair of flanges 101 for connecting with the right end enclosure 200; the left end is provided with a left pair of flanges 102 for being connected with a left seal head 400, a plurality of support plates 103 for supporting and fixing the cold fluid heat exchange tube 300 and the hot fluid heat exchange tube 500 are arranged in the shell 100, a filling port 104 is arranged below the shell 100 and used for filling the shell with intermediate refrigerant liquid 601, when the heat exchanger works, the intermediate refrigerant liquid 601 floods the hot fluid heat exchange tube 500, the intermediate refrigerant liquid 601 can be vaporized into intermediate refrigerant vapor 602 after absorbing heat and is filled around the cold fluid heat exchange tube 300, the intermediate refrigerant vapor 602 is cooled by the cold fluid heat exchange tube 300 and condensed into liquid, and the liquid is returned back into the intermediate refrigerant liquid 601. The middle refrigerant liquid has gas-liquid conversion characteristic, the temperature of the freezing point of the middle refrigerant liquid is lower than that of the low-temperature liquid, the middle refrigerant liquid is used for efficiently transferring the cold of the low-temperature liquid to the refrigerating medium, and supporting feet 105 are arranged below the shell and used for stably fixing the heat exchanger on the ground.
The upper part of the right seal head 200 is provided with a cold fluid inlet 201, the lower part is provided with a cold fluid outlet 202, the inside is provided with a cold fluid separation baffle 203 for enabling cold fluid to flow through a cold fluid heat exchange tube 300, the cold fluid heat exchange tube 300 is fixed above the inside of the shell 100 through a support plate 103 and is positioned in the middle refrigerant evaporation gas for transmitting the cold energy of low-temperature liquid to the middle refrigerant. The cold fluid fixing tube plate 301 is disposed between the housing 100 and the right head 200 to separate two spaces, and the cold fluid heat exchange tube 300 passes through the cold fluid fixing tube plate 301 to communicate with the inner space of the right head 200.
The lower part of the left end socket 400 is provided with a hot fluid inlet 401, the upper part is provided with a hot fluid outlet 402, the inside is provided with a hot fluid separation baffle 403 for enabling hot fluid to flow through a hot fluid heat exchange tube 500, the hot fluid heat exchange tube 500 is fixed below the inner part of the shell through a supporting plate 103 and immersed in an intermediate refrigerant, and is used for transferring the cold energy obtained by the intermediate refrigerant from low-temperature liquid to the refrigerating medium. The thermal fluid fixing tube plate 501 is disposed between the housing 100 and the left head 400 to separate two spaces, and the thermal fluid heat exchange tube 500 passes through the thermal fluid fixing tube plate 501 to communicate with the inner space of the left head 400.
The cold fluid heat exchange tube 300 is disposed in an upper region in the housing, and the hot fluid heat exchange tube 500 is disposed in a lower region in the housing, so that the upper middle refrigerant is cooled to have increased density, the lower middle refrigerant is vaporized when being heated, a large number of bubbles are generated to move upwards, and convection disturbance is formed in the middle refrigerant, so that the heat exchange process between the fluids is enhanced.
The cold fluid heat exchange tube and the hot fluid heat exchange tube can be threaded tubes made of red copper, micro ribs can be arranged on the inner wall and the outer wall of the threaded tubes, and the arrangement of the micro ribs can increase the heat exchange area so as to improve the heat exchange efficiency.
The cold fluid inlet 201, the cold fluid outlet 202, the hot fluid inlet 401 and the hot fluid outlet 402 can be connected with the outer tube of the device in a flange connection or a welding connection. The cold fluid heat exchange tube and the hot fluid heat exchange tube can be U-shaped tubes or coiled tubes, or heat exchange tubes and types with higher heat exchange efficiency can be selected.
The volume of the intermediate refrigerant in the shell 100 is large, and the thermal inertia is large, so that the temperature of the intermediate refrigerant is less influenced by the low-temperature liquid, and therefore, the heat exchange process of the secondary refrigerant and the low-temperature liquid when the intermediate refrigerant is taken as the intermediate refrigerant can be easily and accurately controlled, the temperature of the secondary refrigerant is not too low, and the problems of freezing and poor heat exchange of the secondary refrigerant when the secondary refrigerant exchanges heat with the low-temperature liquid are avoided.
The cold energy is transferred from the low-temperature liquid to the secondary refrigerant:
The low-temperature liquid enters the area above the right seal head 200 from the cold fluid inlet 201, then flows into the cold fluid heat exchange tube 300, exchanges heat with the middle refrigerant in the shell 100 to provide cold energy, flows out of the cold fluid heat exchange tube 300 after heating and gasification, enters the area below the right seal head 200, and finally flows out of the cold fluid outlet 202; the intermediate refrigerant absorbs the cold of the low-temperature liquid, then the temperature is reduced, the density is increased, and the intermediate refrigerant flows downwards under the action of gravity and passes through the hot fluid heat exchange tube 500. The secondary refrigerant enters the area below the left end socket from the hot fluid inlet 401, then flows into the hot fluid heat exchange tube 500, exchanges heat with the middle refrigerant to obtain cold energy, flows out of the hot fluid heat exchange tube 500 after the temperature is reduced to enter the area below the left end socket 400, and finally flows out of the hot fluid outlet 402, so that the cooling process of the secondary refrigerant is completed. The intermediate refrigerant absorbs the heat of the secondary refrigerant and then increases in temperature, a large number of bubbles are generated on the outer wall of the hot fluid heat exchange tube 500, the bubbles are separated from the outer wall of the hot fluid heat exchange tube 500, severe turbulence is generated in the intermediate refrigerant in the floating process, heat exchange is performed between the bubbles and the intermediate refrigerant with lower temperature, the bubbles are gradually reduced, and the bubbles which are not completely subjected to heat exchange enter the upper region in the shell 100 through the gas-liquid phase interface 603 of the intermediate refrigerant, so that the bubbles become the intermediate refrigerant evaporating gas 602. The intermediate refrigerant vapor 602 in the upper region of the housing 100 continuously accumulates, and the pressure inside the housing continuously increases, while the temperature in the upper region of the flow of cryogenic liquid decreases, and eventually the vapor condenses back into liquid.
A company gasifies 14 tons of LNG per hour at a gasification pressure of 2.5MPaA, and is required to recover LNG gasification cold and use it for cooling an industrial cooling circulation glycol solution and cooling water. By adopting the cooling heat exchanger, cooling can be realized by only 2 heat exchangers. The first heat exchanger, the low-temperature liquid is LNG, the middle refrigerant is propane, and the secondary refrigerant is glycol solution; the low-temperature liquid of the second heat exchanger is NG gas discharged from the first heat exchanger, the middle refrigerant is propane, and the secondary refrigerant is cooling water. The two heat exchangers connected in series replace the two devices of figure 1 commonly used in the industry, simplify the cooling system, reduce the investment and simplify the operation and maintenance.
It is pointed out again that, in this embodiment, the shape of the shell is changed, the type, shape and material of the heat exchange tube are changed, the arrangement position of the heat exchange tube in the shell is changed, the fixing mode of the heat exchange tube in the shell is changed, the flowing direction of the cold fluid is changed, etc., and all the modifications or optimizations made are all within the scope of the utility model.
It is pointed out again that the heat exchanger for taking cold provided by the utility model can be used in engineering application in a single application mode, a plurality of flexible application modes such as series connection or parallel connection or series-parallel connection and the like, and the heat exchanger for taking cold belongs to the protection scope of the utility model.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (8)
1. The utility model provides a cold energy is retrieved with getting cold heat exchanger, includes casing, right head, cold fluid heat exchange tube, left head and hot fluid heat exchange tube, its characterized in that: the right end of the shell is provided with a right pair of flanges which are used for being connected with a right sealing head; the left end is equipped with left paired flange for be connected with left head, be equipped with the polylith backup pad in the casing, be used for supporting fixed cold fluid heat exchange tube and hot fluid heat exchange tube, set up the filling mouth in the casing below, be used for filling middle refrigerant liquid in the casing, when the heat exchanger work, middle refrigerant liquid submerges hot fluid heat exchange tube, vaporization is middle refrigerant evaporation gas after middle refrigerant liquid absorbs heat, evaporation gas is full around cold fluid heat exchange tube, cooled by cold fluid heat exchange tube and condensate into liquid, in the middle refrigerant liquid of returning again, middle refrigerant liquid has gas-liquid conversion characteristic and the temperature of its freezing point is less than the temperature of low temperature liquid, its effect is with the cold energy of low temperature liquid high-efficiently transfer for the secondary refrigerant, the casing below is equipped with the supporting legs for be fixed in ground with the heat exchanger is stable.
2. The cold energy recovery heat exchanger according to claim 1, wherein: the cold fluid separation partition plate is arranged in the cold fluid heat exchange tube and is fixed above the inside of the shell body through the supporting plate and is positioned in middle refrigerant evaporation gas and used for transmitting cold energy of low-temperature liquid to middle refrigerants, the cold fluid fixing tube plate is arranged between the shell body and the right end enclosure and separates two parts of space, and the cold fluid heat exchange tube passes through the cold fluid fixing tube plate and is communicated with the inner space of the right end enclosure.
3. The cold energy recovery heat exchanger according to claim 1, wherein: the hot fluid heat exchange tube is fixed below the inner part of the shell through a supporting plate, is immersed in middle refrigerants and used for transferring cold energy obtained by the middle refrigerants from low-temperature liquid to the refrigerating medium, a hot fluid fixed tube plate is arranged between the shell and the left end enclosure to separate two parts of space, and the hot fluid heat exchange tube passes through the hot fluid fixed tube plate and is communicated with the inner space of the left end enclosure.
4. The cold energy recovery heat exchanger according to claim 1, wherein: the cold fluid heat exchange tube is arranged in the upper area in the shell, the hot fluid heat exchange tube is arranged in the lower area of the shell, so that the upper middle refrigerant can flow downwards when meeting cold, a large number of bubbles can be generated by vaporization of the lower middle refrigerant when meeting heat, convection disturbance can be formed in the middle refrigerant, and the heat exchange process between the fluids can be enhanced.
5. The cold energy recovery heat exchanger according to claim 1, wherein: the cold fluid heat exchange tube and the hot fluid heat exchange tube can be threaded tubes made of red copper, micro ribs can be arranged on the inner wall and the outer wall of the threaded tubes, and the arrangement of the micro ribs can increase the heat exchange area so as to improve the heat exchange efficiency.
6. The cold energy recovery heat exchanger according to claim 2, wherein: the cold fluid inlet and the cold fluid outlet can be connected with the outer pipe of the equipment in a flange connection or welding connection mode.
7. A cold energy recovery heat exchanger according to claim 3, wherein: the connection mode of the hot fluid inlet and the hot fluid outlet and the outer tube of the equipment can adopt flange connection or welding connection.
8. The cold energy recovery heat exchanger according to claim 5, wherein: the cold fluid heat exchange tube and the hot fluid heat exchange tube can be U-shaped tubes or coiled tubes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310133109.1A CN115839630A (en) | 2023-02-20 | 2023-02-20 | Cold energy recovery is with getting cold heat exchanger |
| CN2023101331091 | 2023-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221036933U true CN221036933U (en) | 2024-05-28 |
Family
ID=85579811
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310133109.1A Withdrawn CN115839630A (en) | 2023-02-20 | 2023-02-20 | Cold energy recovery is with getting cold heat exchanger |
| CN202322144560.1U Active CN221036933U (en) | 2023-02-20 | 2023-08-10 | Cold energy recovery is with getting cold heat exchanger |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310133109.1A Withdrawn CN115839630A (en) | 2023-02-20 | 2023-02-20 | Cold energy recovery is with getting cold heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN115839630A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6419629B2 (en) * | 2015-03-31 | 2018-11-07 | 株式会社神戸製鋼所 | Gas vaporizer for cold recovery |
| CN204922503U (en) * | 2015-08-31 | 2015-12-30 | 北京高杰能源技术有限公司 | Cold energy recovery unit and liquefied natural gas cold energy recovery system |
| CN208704235U (en) * | 2018-04-24 | 2019-04-05 | 李明 | A kind of combined type LNG cold energy recycling vaporizer based on gravity assisted heat pipe |
-
2023
- 2023-02-20 CN CN202310133109.1A patent/CN115839630A/en not_active Withdrawn
- 2023-08-10 CN CN202322144560.1U patent/CN221036933U/en active Active
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| Publication number | Publication date |
|---|---|
| CN115839630A (en) | 2023-03-24 |
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