CN210769216U - Supercritical carbon dioxide compression cooling system - Google Patents
Supercritical carbon dioxide compression cooling system Download PDFInfo
- Publication number
- CN210769216U CN210769216U CN201921763605.0U CN201921763605U CN210769216U CN 210769216 U CN210769216 U CN 210769216U CN 201921763605 U CN201921763605 U CN 201921763605U CN 210769216 U CN210769216 U CN 210769216U
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- supercritical carbon
- compressor
- heat dissipation
- channel
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of a supercritical carbon dioxide circulating system, and discloses a supercritical carbon dioxide compression cooling system, which comprises a turbine, a supercritical carbon dioxide cooler, a compressor and a heat exchanger which are connected in sequence, wherein the compressor comprises a holding cavity for holding a compression mechanism and a motor and a compressor cooling mechanism arranged outside the holding cavity; the compressor cooling mechanism comprises a refrigerant channel surrounding the accommodating cavity, the inlet of the refrigerant channel is connected to the outlet of the supercritical carbon dioxide cooler, and the outlet of the refrigerant channel is connected to the inlet of the compressor. This supercritical carbon dioxide compression cooling system leads to compressor cooling body with the partly low temperature supercritical carbon dioxide of supercritical carbon dioxide cooler export, cools off compressing mechanism and motor, can avoid reducing, the technical problem that life reduces because use liquid water to produce the motor reliability that erodees the corruption and lead to.
Description
Technical Field
The utility model relates to a supercritical carbon dioxide circulation system technical field especially relates to a supercritical carbon dioxide compression cooling system.
Background
During the energy conversion process of the rotating electric machine, the loss is generated inside the rotating electric machine. The existence of loss directly influences the efficiency of the motor and the running economy on the one hand; on the other hand, the lost energy is finally converted into heat energy, so that the temperature of each part of the motor is increased, the service life of an insulating material used by the motor is directly influenced, the output of the motor is limited, and the motor can be burnt in serious cases. Therefore, on the one hand, the design is designed with the intention of reducing the losses of the electric machine reasonably, and on the other hand, efforts are made to improve the cooling conditions so that the heat can be dissipated efficiently as quickly as possible.
The cooling of the motor of the current electric compressor is generally realized by a water cooling or air cooling technology, the rotating speed of the motor of the supercritical carbon dioxide compressor is high, the thermal power is high, the effective cooling of the motor of the supercritical carbon dioxide compressor is difficult to realize by the traditional air cooling technology because the air heat exchange coefficient is low, the temperature rise of the cooling water is limited by the boiling condition, a large amount of cooling water is needed by the traditional water cooling technology, the flow velocity is too fast to cause the erosion corrosion of a cooling water channel of the motor, the reliability of the motor is reduced, and the service life of the.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a supercritical carbon dioxide compression cooling system for solve current water-cooling technique quantity big, the velocity of flow fast, easily lead to the runner to erode the problem of corroding, in order to improve the reliability of motor.
The embodiment of the utility model provides a supercritical carbon dioxide compression cooling system, including supercritical carbon dioxide circulation circuit, supercritical carbon dioxide circulation circuit includes turbine, supercritical carbon dioxide cooler, compressor and the heat exchanger that connects gradually, the compressor includes the holding chamber that is used for holding compression mechanism and motor and sets up the compressor cooling body outside the holding chamber; the compressor cooling mechanism comprises a refrigerant channel surrounding the accommodating cavity, an inlet of the refrigerant channel is connected to an outlet of the supercritical carbon dioxide cooler, and an outlet of the refrigerant channel is connected to an inlet of the compressor.
The refrigerant channel comprises a stator heat dissipation flow channel and a compression chamber heat dissipation flow channel which are communicated with each other, the stator heat dissipation flow channel is wound on the outer side of the motor stator, and the compression chamber heat dissipation flow channel is wound on the outer side of the compression chamber.
The refrigerant channel further comprises an end part heat dissipation flow channel arranged at the rear end of the motor, and the end part heat dissipation flow channel, the stator heat dissipation flow channel and the compression chamber heat dissipation flow channel are communicated with each other; and a plurality of radiating fins are arranged on the outer side of the end radiating flow passage.
The compressor cooling mechanism further comprises a heat radiation fan arranged on the outer side of the end heat radiation flow channel, and the heat radiation fan is coaxially sleeved on the rotating shaft of the motor.
The inlet of the refrigerant channel is connected to the outlet of the supercritical carbon dioxide cooler through a cooling pipeline, and the cooling pipeline is provided with a regulating valve.
Wherein, still install pressure sensor on the cooling line.
And a flowmeter is also arranged on the cooling pipeline.
The embodiment of the utility model provides a supercritical carbon dioxide compression cooling system, including the turbine, supercritical carbon dioxide cooler, compressor and the heat exchanger that connect gradually, the compressor includes the holding chamber that is used for holding compression mechanism and motor and sets up the compressor cooling body outside the holding chamber; the compressor cooling mechanism comprises a refrigerant channel surrounding the accommodating cavity, the inlet of the refrigerant channel is connected to the outlet of the supercritical carbon dioxide cooler, and the outlet of the refrigerant channel is connected to the inlet of the compressor. This supercritical carbon dioxide compression cooling system leads to compressor cooling mechanism with some low temperature supercritical carbon dioxide of supercritical carbon dioxide cooler export, cools off compressing mechanism and motor, utilizes supercritical carbon dioxide's rerum natura characteristics, can avoid because the technical problem that the motor reliability that uses liquid water to produce the erosion corrosion and lead to reduces, life reduces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a supercritical carbon dioxide compression cooling system in an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of the compressor of FIG. 1;
description of reference numerals:
1: a turbine; 2: a supercritical carbon dioxide cooler; 3: a compressor;
31: an electric motor; 32: a compression mechanism; 4: a heat exchanger;
5: a refrigerant passage; 51: a stator heat dissipation runner; 52: a compression chamber heat dissipation flow channel;
53: an end heat dissipation runner; 6: a heat radiation fan; 7: and cooling the pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clearly indicating the numbering of the product parts and do not represent any substantial difference unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
Fig. 1 is the schematic structural diagram of a supercritical carbon dioxide compression cooling system in the embodiment of the present invention, fig. 2 is a partial sectional view of the compressor in fig. 1, as shown in fig. 1-2, an embodiment of the present invention provides a supercritical carbon dioxide compression cooling system, including a supercritical carbon dioxide circulation loop, the supercritical carbon dioxide circulation loop includes a turbine 1, a supercritical carbon dioxide cooler 2, a compressor 3 and a heat exchanger 4 which are connected in sequence, and the compressor 3 includes a holding cavity for holding a compression mechanism 32 and a motor 31 and a compressor cooling mechanism arranged outside the holding cavity. The compressor cooling mechanism comprises a refrigerant channel 5 surrounding the accommodating cavity, wherein the inlet of the refrigerant channel 5 is connected to the outlet of the supercritical carbon dioxide cooler 2, and the outlet of the refrigerant channel 5 is connected to the inlet of the compressor 3. The first heat exchange side of the supercritical carbon dioxide cooler 2 is connected to the supercritical carbon dioxide circulation loop, and the second heat exchange side of the supercritical carbon dioxide cooler 2 is connected to the external cooling system. The first heat exchange side of the heat exchanger 4 is connected to the supercritical carbon dioxide circulation loop, and the second heat exchange side of the heat exchanger 4 is connected to an external heat source.
Specifically, the circulating medium of the supercritical carbon dioxide circulating loop and the cooling medium of the compressor cooling mechanism are both supercritical carbon dioxide, and the normal-temperature supercritical carbon dioxide has the characteristics of high density (about 30-50% of the density of normal-temperature liquid water), high specific heat ratio (about 1.5 times of the specific heat ratio of the normal-temperature liquid water) and low viscosity (about 1/30 of the normal-temperature liquid water).
The supercritical carbon dioxide enters the compressor 3 to be compressed, then enters the heat exchanger 4 to absorb heat, then enters the turbine 1 to do work through expansion, the turbine 1 is connected with the generator and then is connected with the power generation system, and finally the supercritical carbon dioxide enters the supercritical carbon dioxide cooler 2 to be cooled to the initial state point and enters the compressor 3 again to complete a cycle process. Meanwhile, the outlet of the supercritical carbon dioxide cooler 2 is led out to be connected to the inlet of the refrigerant channel 5, and a part of the supercritical carbon dioxide is provided for cooling the compressor 3. The compressor 3 includes a housing, the interior of which forms a housing chamber for mounting the compression mechanism 32 and the motor 31, and the refrigerant passage 5 may be a flow conduit opened in a wall of the housing.
The supercritical carbon dioxide compression cooling system provided by the embodiment comprises a turbine, a supercritical carbon dioxide cooler, a compressor and a heat exchanger which are sequentially connected, wherein the compressor comprises an accommodating cavity for accommodating a compression mechanism and a motor and a compressor cooling mechanism arranged outside the accommodating cavity; the compressor cooling mechanism comprises a refrigerant channel surrounding the accommodating cavity, the inlet of the refrigerant channel is connected to the outlet of the supercritical carbon dioxide cooler, and the outlet of the refrigerant channel is connected to the inlet of the compressor. This supercritical carbon dioxide compression cooling system leads to compressor cooling mechanism with some low temperature supercritical carbon dioxide of supercritical carbon dioxide cooler export, cools off compressing mechanism and motor, utilizes supercritical carbon dioxide's rerum natura characteristics, can avoid because the technical problem that the motor reliability that uses liquid water to produce the erosion corrosion and lead to reduces, life reduces.
Further, as shown in fig. 2, the refrigerant passage 5 includes a stator heat dissipation flow passage 51 and a compression chamber heat dissipation flow passage 52 which are communicated with each other, the stator heat dissipation flow passage 51 is wound on the outer side of the motor stator, and the compression chamber heat dissipation flow passage 52 is wound on the outer side of the compression chamber. Specifically, the stator heat dissipation channel 51 and the compression chamber heat dissipation channel 52 may be a spiral heat dissipation channel, an annular heat dissipation channel, or a squirrel cage heat dissipation channel.
Further, as shown in fig. 2, the refrigerant passage 5 further includes an end heat dissipation flow passage 53 provided at the rear end of the motor 31, and the end heat dissipation flow passage 53, the stator heat dissipation flow passage 51, and the compression chamber heat dissipation flow passage 52 communicate with each other. A plurality of heat dissipation fins are provided on the outer side of the end heat dissipation flow passage 53. Specifically, the end portion heat dissipation flow passage 53 may adopt a spiral heat dissipation passage, an annular heat dissipation passage or a squirrel cage heat dissipation passage. The heat dissipation fins face the outside of the motor 31, and a plurality of heat dissipation holes are formed in an end cover at the rear end of the motor 31.
Further, as shown in fig. 2, the cooling mechanism of the compressor further includes a heat dissipating fan 6 disposed outside the end heat dissipating flow channel 53, and the heat dissipating fan 6 is coaxially sleeved on the rotating shaft of the motor 31. The rotation shaft of the motor 31 drives the heat dissipation fan 6 to rotate, so that the heat dissipation of the rear end of the motor 31 can be enhanced.
Further, an inlet of the refrigerant passage 5 is connected to an outlet of the supercritical carbon dioxide cooler 2 through a cooling line 7, and a regulating valve (not shown in the figure) is installed on the cooling line 7. Specifically, an electric regulating valve or a manual regulating valve may be employed, and the supercritical carbon dioxide pressure and flow rate to the refrigerant passage 5 are adjusted by adjusting the opening degree of the regulating valve.
Further, a pressure sensor (not shown) is further installed on the cooling line 7, and a flowmeter (not shown) is further installed on the cooling line 7, and specifically, a vortex shedding flowmeter may be used. The state of the supercritical carbon dioxide in the cooling pipeline 7 can be monitored in real time through the pressure sensor and the flowmeter, the opening degree of the regulating valve is adjusted in time, and the cooling requirement of the compressor 3 is met.
As can be seen from the above embodiments, the supercritical carbon dioxide compression cooling system provided by the present invention includes a turbine, a supercritical carbon dioxide cooler, a compressor and a heat exchanger, which are connected in sequence, wherein the compressor includes an accommodating chamber for accommodating a compression mechanism and a motor and a compressor cooling mechanism disposed outside the accommodating chamber; the compressor cooling mechanism comprises a refrigerant channel surrounding the accommodating cavity, the inlet of the refrigerant channel is connected to the outlet of the supercritical carbon dioxide cooler, and the outlet of the refrigerant channel is connected to the inlet of the compressor. This supercritical carbon dioxide compression cooling system leads to compressor cooling mechanism with some low temperature supercritical carbon dioxide of supercritical carbon dioxide cooler export, cools off compressing mechanism and motor, utilizes supercritical carbon dioxide's rerum natura characteristics, can avoid because the technical problem that the motor reliability that uses liquid water to produce the erosion corrosion and lead to reduces, life reduces.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A supercritical carbon dioxide compression cooling system comprises a supercritical carbon dioxide circulation loop, wherein the supercritical carbon dioxide circulation loop comprises a turbine, a supercritical carbon dioxide cooler, a compressor and a heat exchanger which are sequentially connected, and the supercritical carbon dioxide compression cooling system is characterized in that the compressor comprises an accommodating cavity for accommodating a compression mechanism and a motor and a compressor cooling mechanism arranged outside the accommodating cavity; the compressor cooling mechanism comprises a refrigerant channel surrounding the accommodating cavity, an inlet of the refrigerant channel is connected to an outlet of the supercritical carbon dioxide cooler, and an outlet of the refrigerant channel is connected to an inlet of the compressor.
2. The system of claim 1, wherein the refrigerant channel comprises a stator heat dissipation channel and a compression chamber heat dissipation channel which are communicated with each other, the stator heat dissipation channel is wound on the outer side of the motor stator, and the compression chamber heat dissipation channel is wound on the outer side of the compression chamber.
3. The supercritical carbon dioxide compression cooling system according to claim 2 wherein the refrigerant channel further comprises an end heat dissipation flow channel disposed at a rear end of the motor, the end heat dissipation flow channel, the stator heat dissipation flow channel and the compression chamber heat dissipation flow channel being in communication with one another; and a plurality of radiating fins are arranged on the outer side of the end radiating flow passage.
4. The supercritical carbon dioxide compression cooling system according to claim 3, wherein the compressor cooling mechanism further comprises a heat dissipation fan disposed outside the end heat dissipation flow channel, and the heat dissipation fan is coaxially sleeved on the rotating shaft of the motor.
5. The system of claim 1, wherein the inlet of the refrigerant channel is connected to the outlet of the supercritical carbon dioxide cooler by a cooling line having a regulating valve mounted thereon.
6. The supercritical carbon dioxide compression cooling system according to claim 5 wherein a pressure sensor is further mounted on the cooling line.
7. The supercritical carbon dioxide compression cooling system according to claim 5, wherein a flow meter is further installed on the cooling line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921763605.0U CN210769216U (en) | 2019-10-18 | 2019-10-18 | Supercritical carbon dioxide compression cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921763605.0U CN210769216U (en) | 2019-10-18 | 2019-10-18 | Supercritical carbon dioxide compression cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769216U true CN210769216U (en) | 2020-06-16 |
Family
ID=71040669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921763605.0U Expired - Fee Related CN210769216U (en) | 2019-10-18 | 2019-10-18 | Supercritical carbon dioxide compression cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769216U (en) |
-
2019
- 2019-10-18 CN CN201921763605.0U patent/CN210769216U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018153001A1 (en) | Motor cooling structure, power motor and electric drive system | |
| CN109756058B (en) | Integrated motor electric control system | |
| CN113014033A (en) | Internal heat dissipation system of turbine generator | |
| CN102223010A (en) | Conducting and radiating energy-saving motor | |
| CN110098691B (en) | Motor with synchronously cooled stator and rotor | |
| CN210769216U (en) | Supercritical carbon dioxide compression cooling system | |
| CN109757087A (en) | Heat dissipation type radiator | |
| CN208923982U (en) | A kind of wind-cooling heat dissipating micromotor | |
| CN111608924A (en) | Novel liquid self-cooling circulation type high-power brushless electronic water pump | |
| CN215333493U (en) | High-temperature plug-in fan with water-cooling bearing box | |
| CN110671305A (en) | Supercritical carbon dioxide compression cooling system | |
| CN216588970U (en) | Rapid heat dissipation device for wind driven generator | |
| CN209781139U (en) | High-temperature cooling equipment for wind driven generator | |
| CN210948999U (en) | Be applied to wind generating set's wheel hub water cooling circulation system | |
| CN206850618U (en) | A kind of energy-saving motor | |
| CN206323238U (en) | A kind of motor cools down auxiliary smoke discharging structure | |
| CN110768444A (en) | Energy-saving controller for three-phase asynchronous motor | |
| CN209748357U (en) | refrigerator motor with heat dissipation function | |
| CN218162039U (en) | Circulating cooling structure of high-pressure electronic water pump | |
| CN214900549U (en) | Novel liquid cooling system of large-scale air compressor driving motor | |
| CN220748581U (en) | Cooling tower fan | |
| CN219893126U (en) | Energy-saving brushless alternating current motor | |
| CN213729366U (en) | Heat radiation structure of high-speed motor spindle of numerical control machine tool | |
| CN215860439U (en) | Cooling and heat-dissipating system used in space of closed generator set | |
| CN214799207U (en) | Cooling device of wind driven generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20211018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |