CN220018256U - Centrifugal vortex subcritical flow gas heat exchange device - Google Patents
Centrifugal vortex subcritical flow gas heat exchange device Download PDFInfo
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- CN220018256U CN220018256U CN202321453903.6U CN202321453903U CN220018256U CN 220018256 U CN220018256 U CN 220018256U CN 202321453903 U CN202321453903 U CN 202321453903U CN 220018256 U CN220018256 U CN 220018256U
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- 239000000498 cooling water Substances 0.000 claims abstract description 23
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 32
- 230000000694 effects Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 61
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 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 utility model discloses a centrifugal vortex subcritical flow gas heat exchange device which comprises an exchanger shell, an air inlet nozzle horizontally and transversely extending to be connected with the top of the exchanger shell, a cold end gas outlet centrally located at the left end of the exchanger shell, and a hot end gas outlet centrally located at the right end of the exchanger shell, wherein the whole exchanger shell is in a strip tube shape, a heat exchange core tube is coaxially arranged at the middle right part of the cavity, the heat exchange core tube divides the inner cavity of the exchanger shell into an energy separation area and a cooling water area, a cavity at the left part of the exchanger shell is communicated with the air inlet nozzle and is used as a gas vortex flow area for tangentially entering high-pressure high-temperature gas to form a high-speed vortex flow, the hot end gas outlet is used for leading out a low-temperature high-pressure gas-liquid mixed state formed by condensing after heat transfer of outer-layer high-temperature gas, the cold end gas outlet is provided with a cold gas guide tube, and the cold gas guide tube is used for leading out a low-temperature low-pressure gas-liquid mixed state formed by condensing inner-layer.
Description
Technical Field
The utility model belongs to the technical field of heat exchangers, and particularly relates to a centrifugal vortex subcritical flow gas heat exchange device.
Background
In modern society, low-temperature waste heat exists in a large amount, such as industrial production waste heat of communication data center heat dissipation, power generation cold end heat dissipation and the like, and the low-temperature waste heat is basically dissipated to an environmental heat sink, so that huge waste of energy is caused. The direct recycling of the low-temperature heat energy is difficult, and the high-quality heat energy at the high temperature is collected, concentrated and processed by necessary technical approaches, technical methods and technical devices, so that the method has better and wider application value.
As shown in FIG. 3, the existing heat pump heat energy recovery process mainly adopts a single-stage compression system, namely, the low-temperature heat absorption of an evaporator A, the high pressure of a compressor B, the high-temperature heat release of a condenser C, the low-temperature low-pressure of an expansion valve D and the low-temperature heat absorption of an evaporator again to carry out single-stage circulation, so that the purposes of collecting, concentrating and processing low-temperature heat energy into high-temperature heat energy are achieved, but the heat supply capacity of the single-stage compression system is difficult to obtain at a low pressure ratio, and generally the heat supply capacity of the high-temperature heat energy can only be below 50 ℃, so that the application value and the range bureau of the low-temperature heat energy recovery are limited.
In order to obtain a higher water supply temperature, as shown in fig. 4, a bipolar compression system is also adopted at present, but the pressure ratio is increased, and although hot water at a high temperature of 65 ℃ can be obtained, the heating efficiency is low, so that the requirement on the structural strength of the material is high, and the manufacturing cost is increased.
The traditional condenser is simple in structure, the high-temperature high-pressure gaseous refrigerant is cooled by using a cooling medium, the fluid flow rate is generally 1-3 m/s, and the heat release efficiency is low.
Disclosure of Invention
The utility model aims to provide a centrifugal vortex subcritical flow gas heat exchange device which is high in heat release efficiency and capable of generating subcritical flow states of refrigerant gas, and solves the problems that the heat supply capacity of a single-stage compression system is difficult to obtain at a low pressure ratio, so that the application value and the range of low-temperature heat energy recovery are limited, and the heating efficiency is low and the requirement on the structural strength of materials is high due to the fact that the pressure ratio of a bipolar compression system is increased.
The technical scheme adopted by the utility model is as follows: the utility model provides a centrifugal vortex subcritical flow gas heat exchange device, includes exchanger shell, horizontal transversely extend and connects the air inlet nozzle at exchanger shell top, the cold junction gas outlet that is located the left end of exchanger shell in the middle of, the hot junction gas outlet that is located the right-hand member of exchanger shell in the middle of, the exchanger shell wholly is rectangular tubular, and the right part coaxial arrangement in chamber has the heat exchange core pipe, the heat exchange core pipe divide into energy separation zone and cooling water zone with the inner chamber inside and outside of exchanger shell, the left part cavity of exchanger shell communicates with the air inlet nozzle to as the high-pressure high-temperature gas that supplies the tangential to get into the gas vortex flow area of high-speed vortex flow, when the gas of screw in energy separation zone separates into inlayer low temperature gas, outer high temperature gas under the effect of high-speed centrifugal vortex, the gas that is in the subcritical flow state carries out heat transfer with the help of heat exchange core pipe, the low temperature high pressure vapour liquid mixed state that is condensed after the hot junction gas outlet is used for deriving outer high temperature gas heat transfer, cold junction gas outlet is equipped with the low temperature high pressure vapour liquid mixed state that is used for leading out from the cold liquid flow duct outside the left end of exchanger shell to the low pressure gas flow direction to the cold layer.
As the preference of above-mentioned scheme, the changeover portion that gas whirl district is close to the heat exchange core pipe is equipped with the pyrocondensation pipe that links to heat exchange core pipe left end from exchanger shells inner wall, the pyrocondensation pipe is used for shutoff cooling water district left end and increases the gas velocity of flow in gas whirl district and makes its axial whirl to the energy separation district, and dual-purpose in one step, in changeover portion shrink internal diameter moreover, compressed gas, increase pressure, accelerate molecular vibration frequency to improve gas whirl rotational speed, can also guide the gas flow direction, the design is exquisite.
Further preferably, the spiral circumference of the inner wall of the heat exchange core tube is provided with inner metal rotating ribs, and the spiral circumference of the outer wall of the heat exchange core tube is provided with outer metal rotating ribs, so that the gas in a subcritical flow state in the outer-layer high-temperature gas can be subjected to heat transfer by means of the inner metal rotating ribs, the outer metal rotating ribs and the cooling water area, the spiral density can be flexibly changed according to the actual heat transfer quantity requirement, the design is reasonable, heat is transferred jointly through the inner and outer ribs, and the heat transfer efficiency is guaranteed.
Further preferably, the left end and the right end of the exchanger shell corresponding to the cooling water area are respectively provided with a cooling water inlet and a cooling water outlet in the radial direction, and the exchanger shell is cooled by adopting cold water, so that the cost is low and the design is reasonable.
Still preferably, the metal internal rotation rib and the metal external rotation rib are made of porous metal, compared with the common metal plate, under the same plate specification, the porous metal can greatly increase the contact heat exchange area of gas molecules by nearly 20 times, and also prolong the heat exchange flow of the inner side and the outer side of the heat exchange core tube, so that the heat exchange capacity is greatly improved, the porous metal is mainly applied to the aspects of vibration reduction and sound absorption, but the characteristic of large specific surface area of the porous metal is seldom applied, and the prior art of being applied to heat exchange equipment does not exist at present, and the material selection is ingenious.
Further preferably, the outer end of the metal external rotation rib is close to the inner wall of the shell of the exchanger, the contact area of the cooling medium and the metal external rotation rib is increased, the heat transfer effect is improved, the inner ends of the metal internal rotation rib and the cold air guide pipe are axially and radially spaced, the collision between the cold air guide pipe and the metal internal rotation rib is effectively avoided, the mutual interference is caused, the heat transfer effect or the cold air guiding effect is affected, and the heat transfer effect is reasonable in layout.
Further preferably, the caliber of the hot end steam outlet is positioned between the inner diameter of the heat exchange core tube and the caliber of the cold end steam outlet, the design structure is reasonable, and the low-high Wen Fenceng gas flows out of the inner layer and the outer layer are not disordered.
Further preferably, the right end of the cold steam guide pipe is provided with a conical inward sinking microporous plate, so that high-temperature and high-pressure gas molecules mixed with the inner-layer low-temperature gas can be decompressed, and the structure is reasonable.
The utility model has the beneficial effects that:
(1) Compared with the defects that the application value and the range of low-temperature heat energy recovery are limited due to the fact that the heat supply capacity of a single-stage compression system is difficult to obtain, the heating efficiency is low due to the fact that the pressure ratio of a bipolar compression system is increased, the requirement on the structural strength of materials is high, and the like, the scheme directly replaces the traditional condenser in original equipment, so that high-temperature hot water at 80-90 ℃ can be directly realized in the single-stage compression system, and compared with the traditional condenser in the original single-stage compression system, the high-temperature hot water at 50 ℃ below is higher in obvious heat supply capacity.
(2) The high-pressure high-temperature gas horizontally cuts into the gas vortex flow area through the air inlet nozzle to form high-speed vortex flow, and after entering the energy separation area, gas molecules in the inner layer transfer kinetic energy to gas molecules in the outer layer, so that the inner layer gas molecules lose kinetic energy, the vibration frequency is reduced, the temperature is reduced, the outer layer gas molecules obtain kinetic energy, the vibration frequency is increased, and the temperature is increased, so that radial energy transfer and separation are generated along the central axis of the energy separation area, the inner layer is a low-temperature area, part of gas condenses into a gas-liquid mixed state, and the gas is discharged from a cold end gas outlet; the outer layer is a high-temperature region, and part of gas which rotates at high speed and approaches to the critical temperature can be in a subcritical flow state, heat is transferred to cooling water in the cooling water region through the heat exchange core tube, and then is led out from a hot end gas outlet; the structural rings are buckled, and the design is exquisite.
(3) The utility model is completely different from the existing condenser in technical principle, structure and efficiency, is a novel thermal device designed and manufactured under the innovative technical concept, increases the heat exchange temperature difference of the heat exchange core tube by generating high temperature close to the critical, thereby increasing the heat transfer capacity, obtaining the effects of low pressure ratio, high temperature hot water and high heating energy efficiency ratio, and greatly improving the overall benefit and value of low temperature heat energy recovery.
(4) The air inlet nozzle horizontally and transversely extends to be connected with the top of the exchanger shell, so that high-temperature high-pressure air can be ensured to be cut into the heat exchange core tube at a high speed and tangentially attached to the wall flow, the attached wall laminar flow which hinders heat transfer can be destroyed, the air flow is in a turbulent state, the convection heat exchange coefficient between the air flow and the tube wall is greatly improved, the heat transfer capacity is improved, and compared with the existing condenser, the device has the advantages that the volume is greatly reduced and the heat transfer efficiency is high under the condition of the same heat of heat transfer.
In conclusion, the heat pump has the advantages of stronger heat supply capacity, low pressure ratio, high-temperature hot water, high heating energy efficiency ratio, high heat transfer efficiency and the like.
Drawings
Fig. 1 is a cross-sectional view of the structure of the present utility model.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a schematic diagram of a single stage compression system.
FIG. 4 is a schematic diagram of a dual stage compression system.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-4, a centrifugal vortex subcritical flow gas heat exchange device is composed of an exchanger shell 1, an air inlet nozzle 2 horizontally extending and connected to the top of the exchanger shell 1, a cold end gas outlet 3 centrally located at the left end of the exchanger shell 1, and a hot end gas outlet 4 centrally located at the right end of the exchanger shell 1.
The whole exchanger shell 1 is in a strip tube shape, and a heat exchange core tube 11 is coaxially arranged at the right part in the cavity.
The heat exchange core tube 11 divides the interior and exterior of the interior of the exchanger housing 1 into an energy separation zone 5 and a cooling water zone 6.
The left and right ends of the exchanger shell 1 corresponding to the cooling water area 6 are respectively provided with a cooling water inlet 61 and a cooling water outlet 62 in the radial direction.
The left cavity of the exchanger housing 1 communicates with the air intake nozzle 2 and forms a gas swirling flow region 7 of high-speed swirling flow as high-pressure high-temperature gas entering tangentially at a high speed.
The transition section of the gas vortex flow area 7 adjacent to the heat exchange core pipe 11 is provided with a reducing pipe 8 connected to the left end of the heat exchange core pipe 11 from the inner wall of the exchanger shell 1.
The reducing pipe 8 is used for blocking the left end of the cooling water area 6 and increasing the gas flow rate of the gas vortex flow area 7 so as to enable the gas vortex flow area to axially vortex to the energy separation area 5.
When the gas screwed into the energy separation zone 5 is separated into inner low-temperature gas and outer high-temperature gas under the action of high-speed centrifugal vortex, the gas in the subcritical flow state in the outer high-temperature gas is subjected to heat transfer with the cooling water zone 6 by virtue of the heat exchange core tube 11.
The spiral circumference of the inner wall of the heat exchange core tube 11 is provided with inner metal rotating ribs 111, and the spiral circumference of the outer wall is provided with outer metal rotating ribs 112, so that the gas in the subcritical flow state in the outer layer high-temperature gas can transfer heat with the cooling water area 6 by means of the inner metal rotating ribs 111 and the outer metal rotating ribs 112.
The inner metal rib 111 and the outer metal rib 112 are preferably made of porous metal.
The outer ends of the metal outwardly-directed ribs 112 are adjacent the inner wall of the exchanger shell 1.
The inner metal rotating ribs 111 are axially and radially spaced from the inner end of the cold air guide pipe 31.
The cold end gas outlet 3 is provided with a cold gas guide tube 31 extending axially from the outside of the left end of the exchanger shell 1 to the energy separation zone 5.
The cold steam guide pipe 31 is used for guiding out a low-temperature low-pressure steam-liquid mixed state formed by condensing the inner-layer low-temperature gas.
The right end of the cold air flow guiding pipe 31 is provided with a conical micro-pore plate.
The hot end gas outlet 4 is used for leading out a low-temperature high-pressure gas-liquid mixed state which is formed by condensing after heat transfer of the outer layer high-temperature gas.
The caliber of the hot end steam outlet 4 is positioned between the inner diameter of the heat exchange core tube 11 and the caliber of the cold end steam outlet 3.
Claims (8)
1. The utility model provides a centrifugal vortex subcritical flow gas heat exchange device which characterized in that: comprises an exchanger shell (1), an air inlet nozzle (2) horizontally and transversely extending to be connected with the top of the exchanger shell (1), a cold end gas outlet (3) centrally positioned at the left end of the exchanger shell (1) and a hot end gas outlet (4) centrally positioned at the right end of the exchanger shell (1), wherein the whole exchanger shell (1) is in a strip tube shape, a heat exchange core tube (11) is coaxially arranged at the middle right part in a cavity, the heat exchange core tube (11) divides the inner cavity and the outer cavity of the exchanger shell (1) into an energy separation zone (5) and a cooling water zone (6), a cavity at the left part of the exchanger shell (1) is communicated with the air inlet nozzle (2) and is used as a high-speed high-temperature gas entering in a high-speed tangential direction to form a high-speed vortex flow area (7), when gas screwed into the energy separation zone (5) is separated into inner layer low-temperature gas and outer layer high-temperature gas under the high-speed centrifugal effect, the gas in the outer layer high-temperature gas is subjected to heat transfer with the cooling water zone (6) by means of the heat exchange core tube (11), the gas in a sub-flow state in the outer layer high-temperature gas is used for transferring heat from the inner layer low-temperature gas and the inner layer high-temperature gas, the cold end gas is axially extended from the cold end (1) to the cold end gas outlet (3) to the cold end (1) and the cold end gas outlet is axially extended from the cold end (1), the cold steam guide pipe (31) is used for guiding out a low-temperature low-pressure steam-liquid mixed state formed by condensing inner-layer low-temperature gas.
2. The centrifugal vortex subcritical flow gas heat exchange device according to claim 1, wherein: the transition section of the gas vortex flow area (7) adjacent to the heat exchange core pipe (11) is provided with a reducing pipe (8) connected to the left end of the heat exchange core pipe (11) from the inner wall of the exchanger shell (1), and the reducing pipe (8) is used for plugging the left end of the cooling water area (6) and increasing the gas flow rate of the gas vortex flow area (7) to enable the gas vortex flow area to axially swirl to the energy separation area (5).
3. The centrifugal vortex subcritical flow gas heat exchange device according to claim 1, wherein: the spiral circumference of the inner wall of the heat exchange core tube (11) is provided with metal internal rotation ribs (111), and the spiral circumference of the outer wall is provided with metal external rotation ribs (112), so that the gas in the subcritical flow state in the outer-layer high-temperature gas can transfer heat with the aid of the metal internal rotation ribs (111), the metal external rotation ribs (112) and the cooling water area (6).
4. The centrifugal vortex subcritical flow gas heat exchange device according to claim 1, wherein: the left end and the right end of the exchanger shell (1) corresponding to the cooling water area (6) are respectively provided with a cooling water inlet (61) and a cooling water outlet (62) in the radial direction.
5. A centrifugal scroll subcritical flow gas heat exchange device in accordance with claim 3, wherein: the inner metal rotary fins (111) and the outer metal rotary fins (112) are made of porous metal materials.
6. A centrifugal scroll subcritical flow gas heat exchange device in accordance with claim 3, wherein: the outer ends of the metal external rotation ribs (112) are close to the inner wall of the exchanger shell (1), and the metal internal rotation ribs (111) and the inner end head of the cold steam guide pipe (31) are axially and radially separated.
7. The centrifugal vortex subcritical flow gas heat exchange device according to claim 1, wherein: the caliber of the hot end steam outlet (4) is positioned between the inner diameter of the heat exchange core tube (11) and the caliber of the cold end steam outlet (3).
8. The centrifugal vortex subcritical flow gas heat exchange device according to claim 1, wherein: the right end of the cold air flow guiding pipe (31) is provided with a conical inward sinking micro-pore plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321453903.6U CN220018256U (en) | 2023-06-08 | 2023-06-08 | Centrifugal vortex subcritical flow gas heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321453903.6U CN220018256U (en) | 2023-06-08 | 2023-06-08 | Centrifugal vortex subcritical flow gas heat exchange device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220018256U true CN220018256U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321453903.6U Active CN220018256U (en) | 2023-06-08 | 2023-06-08 | Centrifugal vortex subcritical flow gas heat exchange device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220018256U (en) |
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2023
- 2023-06-08 CN CN202321453903.6U patent/CN220018256U/en active Active
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