CN115528518A - Consumption type cold accumulation system for laser system - Google Patents
Consumption type cold accumulation system for laser system Download PDFInfo
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- CN115528518A CN115528518A CN202211506157.2A CN202211506157A CN115528518A CN 115528518 A CN115528518 A CN 115528518A CN 202211506157 A CN202211506157 A CN 202211506157A CN 115528518 A CN115528518 A CN 115528518A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention provides a consumption type cold accumulation system for a laser system, which comprises a consumption type refrigerating system, a cold accumulation circulating system and a water-cooling evaporation heat exchanger for connecting the consumption type refrigerating system and the cold accumulation circulating system, wherein a refrigerating passage and a cold accumulation circulating passage which are mutually coupled are formed; the cold accumulation circulating system is connected with the laser system to provide continuous heat dissipation for the laser system. The consumption type refrigerating system introduces a high-pressure liquid refrigerant and is provided with a mixing device, so that the pressure energy of the high-pressure liquid refrigerant is converted into kinetic energy, and the kinetic energy is mixed with the low-pressure superheated gaseous refrigerant after heat exchange, expanded and evaporated for refrigeration to form the consumption type refrigerating system capable of operating in an autonomous cycle manner; the recycling of the refrigerant and the efficient utilization of energy are realized, additional energy is not required to be provided, and the cost is saved. The consumption type cold accumulation system provides continuous cold energy for the laser system, so that the laser system can obtain secondary light emitting capacity in a very short time, the environmental adaptability and the reliability of the laser system are improved, and the energy efficiency of the whole system is further improved.
Description
Technical Field
The invention relates to the technical field of laser system cooling, in particular to a consumption type cold accumulation system for a laser system.
Background
Laser is widely used in various fields, such as processing, medical and scientific research fields, due to its characteristics of extremely high brightness, strong coherence, good directivity, high concentration and the like. For a solid laser, with the continuous increase of the power of a laser device, part of energy is converted into heat during working, if the part of heat cannot be eliminated in time, the temperature of the laser device is increased sharply, the energy distribution in a crystal is not uniform, and the output performance of the laser is further influenced; the most important part for the proper safe use of lasers is thermal management.
In the prior art, the invention patent (publication number is CN 112728796A) discloses a novel refrigeration system for a solid laser welding machine, the refrigeration system is realized by depending on devices such as a compressor, a condenser, an evaporator, a water tank and the like, and the design of an upper refrigeration system and a lower refrigeration system is adopted, so that the refrigeration system is quicker and higher in efficiency, and the same refrigeration loop can still be normally used and maintained when being damaged, and the normal work is not influenced. The invention patent (publication number is CN 113555758A) discloses a cold-storage liquid cooling system for laser cooling, which combines a refrigeration system and a cooling liquid circulation system, when a laser is not started, the refrigeration system stores cold, and when the laser works, only an external circulation pump is started and an electric three-way valve is adjusted to supply liquid; therefore, the laser and the refrigeration system can be prevented from running simultaneously, the power supply pressure of the laser can be effectively relieved, and the power supply burden of the laser is reduced.
In the patent technology, the cold quantity of the cold storage water tank is gradually recovered by adopting a steam compression method, the cold storage system needs mechanical parts such as a compressor, a condenser, a fan or an evaporator, the complexity of the whole cold storage system is high, the weight is large, and the recovery time of the cold storage system is long due to the fact that the refrigeration power of the steam compressor is limited, the laser cannot obtain light emitting capacity again in a short time, and the working efficiency of the laser is greatly reduced.
In view of the above, there is a need to design an improved consumption type cold storage system for laser system to solve the above problems.
Disclosure of Invention
The invention aims to provide a consumption type cold accumulation system for a laser system, which is a consumption type refrigeration system for self-circulation by introducing a high-pressure liquid refrigerant, mixing, expanding and evaporating the high-pressure liquid refrigerant with a low-pressure superheated gaseous refrigerant after heat exchange by utilizing the pressure energy of the high-pressure liquid refrigerant; the refrigerating system and the cold accumulation circulating system continuously exchange heat, continuous cold energy is provided for the laser system, the laser system can obtain the capacity of secondary light emission in a very short time, the environmental adaptability and the reliability of the laser system are improved, and the energy efficiency of the whole laser system is further improved.
In order to achieve the purpose, the invention provides a consumption type cold accumulation system for a laser system, which comprises a consumption type refrigeration system, a cold accumulation circulating system and a water-cooling evaporation heat exchanger for connecting the consumption type refrigeration system and the cold accumulation circulating system, wherein a refrigeration passage and a cold accumulation circulating passage which are mutually coupled are formed; the cold accumulation circulating system is connected with the laser system; the consumption type refrigerating system comprises a high-pressure liquid refrigerant supply device, a mixing device and an expansion valve which are sequentially communicated;
the mixing device is provided with a high-pressure port, a low-pressure port and a medium-pressure port, the high-pressure port is communicated with an outlet of the high-pressure liquid refrigerant supply device, the low-pressure port is communicated with an outlet on the side of a refrigeration passage of the water-cooling evaporation heat exchanger, and the medium-pressure port is communicated with an inlet on the side of the refrigeration passage of the water-cooling evaporation heat exchanger through the expansion valve to form a refrigeration passage for the automatic cyclic utilization of the refrigerant;
when the laser system works, the cold accumulation circulating system and the consumption type refrigerating system work simultaneously to provide continuous heat dissipation for the laser system; the cold accumulation circulating system provides circulating water for the laser system, and the circulating water enters the water-cooling evaporation heat exchanger to exchange heat with the consumption type refrigerating system;
the high-pressure liquid refrigerant output by the high-pressure liquid refrigerant supply device of the consumption type refrigerating system enters from a high-pressure port of the mixing device, the pressure energy of the high-pressure liquid refrigerant is converted into kinetic energy, the energy sucks the low-pressure superheated gaseous refrigerant output by the water-cooling evaporation heat exchanger from a low-pressure port of the mixing device, the mixed medium-pressure refrigerant enters the expansion valve through the medium-pressure port of the mixing device and forms liquid refrigerant under the action of the expansion valve, the liquid refrigerant enters the water-cooling evaporation heat exchanger and carries out evaporation heat exchange with circulating water of the cold accumulation circulating system, and cold energy is transmitted to the cold accumulation circulating passage from the refrigerating passage and then transmitted to the laser system.
As a further improvement of the invention, an evaporation pressure sensor is arranged between the expansion valve and the water-cooling evaporation heat exchanger, and a self-feedback system is arranged between the evaporation pressure sensor and the expansion valve; the evaporation pressure sensor is used for monitoring the pressure of the liquid refrigerant formed after the medium-pressure refrigerant passes through the expansion valve, and feeding the result back to the expansion valve for regulation.
As a further improvement of the invention, an outlet on the cooling passage side of the water-cooling evaporation heat exchanger is also communicated with an environment-controlled gas system to provide environment-controlled gas for the laser system, thereby realizing the recycling of gaseous refrigerant.
As a further improvement of the present invention, a control assembly is further provided between the high-pressure liquid refrigerant supply device and the mixing device for controlling the autonomous circulation of the refrigerant in the refrigeration passage.
As a further improvement of the invention, the cold accumulation circulating system comprises a circulating temperature sensor, a cold accumulation water tank, a circulating pump and a circulating check valve which are sequentially communicated; the circulating temperature sensor is connected with an outlet of the cold accumulation circulating path side of the water-cooling evaporation heat exchanger, and the circulating check valve is connected with an inlet of the cold accumulation circulating path side of the water-cooling evaporation heat exchanger; the cold storage water tank is connected with the laser system to form a passage.
As a further improvement of the present invention, a feedback regulation system is provided between the circulating temperature sensor and the control assembly of the consumption refrigeration system; the control component adjusts the flow and the pressure of the high-pressure liquid refrigerant output by the high-pressure liquid refrigerant supply device according to the feedback of the circulating temperature sensor.
As a further improvement of the invention, a gas temperature sensor and a pressure reducing valve are further arranged on a connecting passage between an outlet on the cooling passage side of the water-cooling evaporation heat exchanger and the environment-friendly gas control system, so as to provide environment-friendly gas with proper temperature and pressure for the laser system.
As a further improvement of the invention, a liquid temperature sensor is arranged on the cold accumulation water tank, and a laser liquid supply pump, a liquid supply temperature sensor, a liquid supply valve and a liquid supply flow sensor are arranged on a connecting passage of the cold accumulation water tank and the laser system, so that the optimal liquid supply temperature and flow of the laser system are realized.
As a further improvement of the invention, a part of the low-pressure superheated gaseous refrigerant output from the cooling path side of the water-cooled evaporation heat exchanger enters from the low-pressure port of the mixing device to realize recycling, and the other part of the low-pressure superheated gaseous refrigerant enters the laser system to provide environment control gas for the laser system to realize recycling of the refrigerant.
As a further improvement of the invention, the control assembly comprises a shutoff valve, a refrigerant flow sensor and a high pressure sensor.
The invention has the beneficial effects that:
1. the invention relates to a consumption type cold accumulation system for a laser system, which comprises a consumption type refrigerating system, a cold accumulation circulating system and a water-cooling evaporation heat exchanger for connecting the consumption type refrigerating system and the cold accumulation circulating system, wherein a refrigerating passage and a cold accumulation circulating passage which are mutually coupled are formed; the cold accumulation circulating system is connected with the laser system to provide continuous heat dissipation for the laser system. The consumption type refrigerating system introduces high-pressure liquid refrigerant, and after the pressure energy of the high-pressure liquid refrigerant is converted into kinetic energy, the high-pressure liquid refrigerant and the low-pressure superheated gaseous refrigerant after heat exchange can be mixed, expanded and evaporated for refrigeration to form the consumption type refrigerating system which does not need to supply other energy and can operate in an autonomous cycle manner; the refrigerating system and the cold accumulation circulating system continuously exchange heat, continuous cold energy is provided for the laser system, the laser system can obtain secondary light emitting capacity in a very short time without waiting, the working efficiency of the laser system is improved, the environmental adaptability and the reliability of the laser system are improved, and the energy efficiency of the whole laser system is further improved.
2. The invention arranges a mixing device at the outlet of the high-pressure liquid refrigerant supply device, and arranges three connectors of high pressure, low pressure and medium pressure; under the action of the device, the high-pressure liquid refrigerant can be mixed with the low-pressure superheated gaseous refrigerant output by the cooling passage side of the water-cooled evaporation heat exchanger to form medium-pressure refrigerant which is output from a medium-pressure port; therefore, the refrigerant is recycled, the energy is efficiently utilized, additional energy is not required to be provided, and the cost is saved. The medium-pressure refrigerant comprises a gas-phase refrigerant and a liquid-phase refrigerant, the liquid-phase refrigerant is formed under the action of the expansion valve, the liquid-phase refrigerant is subjected to evaporation heat exchange with circulating water of the cold accumulation circulating system through the water-cooling evaporation heat exchanger, cold energy is transmitted to the cold accumulation circulating passage from the refrigerating passage, and then continuous cold energy is provided for the laser system, so that the high-efficiency work of the laser system is realized.
3. Compared with the vapor compression cold accumulation technology, the consumption type cold accumulation system does not need to additionally use mechanical devices such as a condensation heat exchanger, a fan, a compressor and the like, reduces the complexity and the weight of the laser heat dissipation cold accumulation system, and increases the practicability. In addition, the low-pressure superheated gaseous refrigerant output by the cooling passage side of the water-cooling evaporation heat exchanger is still far lower than the air temperature in the laser cabin, so that the low-pressure superheated gaseous refrigerant can be used for environmental control of a laser system, the recycling of the refrigerant is realized, and the environmental adaptability, reliability and refrigerant utilization efficiency of the system are improved.
Drawings
Fig. 1 is a schematic view of a consumable cold storage system for a laser system of the present invention.
Fig. 2 is a schematic view of another embodiment of the present invention of a consumable cold storage system for a laser system.
Reference numerals
1-a consumer refrigeration system; 11-high pressure liquid refrigerant supply means; 12-a mixing device; 121-high pressure port; 122-low pressure port; 123-medium pressure port; 13-an expansion valve; 14-a control assembly; 141-a stop valve; 142-a refrigerant flow sensor; 143-high pressure sensors; 15-an evaporation pressure sensor; 16-a heat exchanger; 2-cold storage circulating system; 21-cycle temperature sensor; 22-a cold storage water tank; 221-liquid temperature sensor; 23-a circulation pump; 24-circulation check valve; 25-laser liquid supply pump; 26-a liquid supply temperature sensor; 27-a liquid supply valve; 28-a feed liquid flow sensor; 3-water-cooling evaporation heat exchanger; 4-a laser system; 5-a ring gas control system; 51-gas temperature sensor; 52-pressure relief valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the present invention provides a consumption type cold accumulation system for a laser system, which comprises a consumption type refrigeration system 1, a cold accumulation circulation system 2 and a water-cooling evaporation heat exchanger 3 connecting the two, forming a refrigeration passage and a cold accumulation circulation passage coupled with each other; the cold accumulation circulating system 2 is connected with the laser system 4 to provide continuous heat dissipation for the laser system. The consumption type refrigerating system 1 can be mixed, expanded and evaporated with the low-pressure superheated gaseous refrigerant after heat exchange after the pressure energy is converted into kinetic energy by introducing the high-pressure liquid refrigerant, so that the consumption type refrigerating system which does not need to supply other energy and can operate in an autonomous cycle manner is formed; this consumption formula refrigerating system 1 and cold-storage circulation system 2 carry out the heat exchange through water-cooling evaporation heat exchanger 3 constantly, provide continuous cold volume for laser system 4, make it obtain the ability of light-emitting once more in the very short time, have improved laser system 4's environmental suitability and reliability, and then have promoted whole laser system 4's energy efficiency.
Specifically, the consumption refrigeration system 1 includes a high-pressure liquid refrigerant supply device 11, a mixing device 12, and an expansion valve 13; the mixing device 12 is provided with a high-pressure port 121, a low-pressure port 122, and an intermediate-pressure port 123, the high-pressure port 121 communicates with the outlet of the high-pressure liquid refrigerant supply device 11, the low-pressure port 122 communicates with the outlet on the cooling passage side of the water-cooled evaporation heat exchanger 3, and the intermediate-pressure port 123 communicates with the inlet on the cooling passage side of the water-cooled evaporation heat exchanger 3 via the expansion valve 13, thereby forming a cooling passage through which refrigerant is autonomously recycled. Under the action of the mixing device 12, the high-pressure liquid refrigerant can be mixed with the low-pressure superheated gaseous refrigerant output from the refrigeration passage side of the water-cooled evaporation heat exchanger 3, and the formed medium-pressure refrigerant is output from the medium-pressure port 123 of the mixing device 12; therefore, the refrigerant is recycled, the energy is efficiently utilized, additional energy is not required to be provided, and the cost is saved. The refrigerant output by the medium pressure port 123 of the mixing device 3 comprises a gas-phase and liquid-phase mixed refrigerant, and forms a liquid refrigerant under the action of the expansion valve 13, the liquid refrigerant enters the water-cooling evaporation heat exchanger 3 and then carries out evaporation heat exchange with circulating water of the cold accumulation circulating system 2, and cold energy is transmitted to the cold accumulation circulating passage from the refrigerating passage, so that continuous cold energy is provided for the laser system 4, and high-efficiency work of the laser system 4 is realized.
Specifically, an evaporation pressure sensor 15 is arranged between the expansion valve 13 and the water-cooled evaporation heat exchanger 3, and a self-feedback system is arranged between the evaporation pressure sensor 15 and the expansion valve 13; the evaporation pressure sensor 15 is used for monitoring the pressure of the liquid refrigerant formed after the medium-pressure refrigerant passes through the expansion valve 13, feeding the result back to the expansion valve 13 for adjustment, and providing the liquid refrigerant with the optimal pressure for the water-cooling evaporation heat exchanger 3 so as to improve the heat exchange efficiency. A control assembly 14 is also arranged between the high-pressure liquid refrigerant supply device 11 and the mixing device 12 and is used for controlling the autonomous circulation of the refrigerant in the refrigeration passage; the control assembly 14 includes a shutoff valve 141, a refrigerant flow sensor 142, and a high-pressure sensor 143; so arranged, the liquid outlet quantity and pressure of the high-pressure liquid refrigerant supply device 11 can be controlled to provide enough energy for subsequent mixing with the low-pressure superheated gaseous refrigerant and heat exchange in the water-cooled evaporating heat exchanger 3.
The outlet of the cooling passage side of the water-cooling evaporation heat exchanger 3 is also communicated with the ring control gas system 5 to provide ring control gas for the laser system 4, and the ring control gas is used for cooling the circulating pipeline of the laser system 4, so that the recycling of the gaseous refrigerant can be realized.
In some embodiments, a gas temperature sensor 51 and a pressure reducing valve 52 are further disposed on a connection path between an outlet on the cooling path side of the water-cooled evaporative heat exchanger 3 and the environmental control gas system 5, so as to provide the environmental control gas with appropriate temperature and pressure for the laser system 4. Because the temperature of the low-pressure superheated gaseous refrigerant output by the cooling passage side of the water-cooling evaporation heat exchanger 3 is still far lower than the air temperature in the laser cabin of the laser system 4, the low-pressure superheated gaseous refrigerant can be used for the environmental control of the laser system, the recycling of the refrigerant is realized, and the environmental adaptability, the reliability and the utilization efficiency of the refrigerant of the system are improved.
The cold accumulation circulating system 2 comprises a circulating temperature sensor 21, a cold accumulation water tank 22, a circulating pump 23 and a circulating check valve 24 which are sequentially communicated; the circulating temperature sensor 21 is connected with an outlet on the cold accumulation circulating path side of the water-cooled evaporation heat exchanger 3, and the circulating check valve 24 is connected with an inlet on the cold accumulation circulating path side of the water-cooled evaporation heat exchanger 3; the cold storage water tank 22 is connected to the laser system 4 to form a passage. A feedback regulation system is arranged between the circulating temperature sensor 21 and the control component 14 of the consumption type refrigerating system 1; the control unit 14 adjusts the flow rate and pressure of the high-pressure liquid refrigerant outputted from the high-pressure liquid refrigerant supply device 11 based on the feedback from the circulation temperature sensor 21. The feedback regulation system plays a role in coupling the consumption type refrigeration system 1 and the cold accumulation circulating system 2, a feedback regulation mechanism is established between the two, and the intellectualization and systematization of the consumption type cold accumulation system for the laser system are improved by matching with the self-feedback system between the evaporation pressure sensor 15 and the expansion valve 13, so that the practicability of the consumption type cold accumulation system is improved.
Specifically, the cold storage water tank 22 is provided with a liquid temperature sensor 221, and a connection path between the cold storage water tank 22 and the laser system 4 is provided with a laser liquid supply pump 25, a liquid supply temperature sensor 26, a liquid supply valve 27 and a liquid supply flow sensor 28, so that the optimal liquid supply temperature and liquid supply flow of the laser system 4 are realized. Through the arrangement of the devices, the heat dissipation capacity and the refrigeration power of the laser system 4 can be matched, and the heat balance and the energy balance of the whole system are realized.
The invention also provides a heat dissipation method for the consumption type cold accumulation system of the laser system, which adopts the consumption type cold accumulation system to dissipate heat of the laser system: when the laser system 4 works, the cold accumulation circulating system 2 and the consumption type refrigerating system 1 work simultaneously to provide continuous heat dissipation for the laser system 4; the cold accumulation circulating system 2 provides circulating water for the laser system 4 through the cold accumulation water tank 22, and the circulating water in the cold accumulation water tank 22 enters the water-cooling evaporation heat exchanger 3 and continuously exchanges heat with the consumption type refrigerating system 1 through the water-cooling evaporation heat exchanger 3; the high-pressure liquid refrigerant output by the high-pressure liquid refrigerant supply device 11 of the consumption type refrigeration system 1 enters from the high-pressure port 121 of the mixing device 12, the mixing device 12 converts the pressure energy of the high-pressure liquid refrigerant into kinetic energy, the energy sucks the low-pressure superheated gaseous refrigerant output by the water-cooling evaporation heat exchanger 3 from the low-pressure port 122 of the mixing device 12, the mixed medium-pressure refrigerant enters the expansion valve 13 through the medium-pressure port 123 and forms complete liquid refrigerant under the action of the expansion valve 13, the liquid refrigerant enters the water-cooling evaporation heat exchanger 3 and carries out evaporation heat exchange with the circulating water of the cold accumulation circulating system 2, and the cold energy is transferred to the cold accumulation circulating path from the refrigeration path. Wherein, a part of the low-pressure superheated gaseous refrigerant output from the refrigeration passage side of the water-cooled evaporation heat exchanger 3 enters from the low-pressure port of the mixing device 12 to realize cyclic utilization, and the other part of the low-pressure superheated gaseous refrigerant enters into the environment-controlled gas system 5 of the laser system 4 to provide environment-controlled gas for the laser system, thereby realizing the recycling of the refrigerant.
Compared with the vapor compression cold accumulation technology, the consumption type cold accumulation system does not need to additionally use mechanical devices such as a condensation heat exchanger, a fan, a compressor and the like, reduces the complexity and the weight of the laser heat dissipation cold accumulation system, and increases the practicability.
Referring to fig. 2, the present invention further provides another embodiment of a consumable cold storage system for a laser system, which is different from the embodiment of fig. 1 in that a heat exchanger 16 is provided in the consumable refrigeration system 1; wherein the medium pressure port 123 of the mixing device 12 is connected with the hot side inlet of the heat exchanger 16, the hot side outlet of the heat exchanger 16 is connected with the expansion valve 13, the low-pressure superheated gaseous refrigerant at the refrigerating passage side outlet of the water-cooled evaporating heat exchanger 3 is connected with the cold side inlet of the heat exchanger 16, and the cold side outlet of the heat exchanger 16 is respectively connected with the gas temperature sensor 51 for controlling the environmental control gas and the low pressure port 122 of the mixing device 12; the rest is substantially the same, and will not be described herein.
In the embodiment, part of the cold energy of the low-pressure superheated gaseous refrigerant at the outlet of the water-cooling evaporation heat exchanger 3 can be recovered into the medium-pressure refrigerant at the outlet 16 of the mixing device through the action of the heat exchanger 16, so that the energy efficiency of the whole system is further improved.
In summary, the present invention provides a consumption type cold accumulation system for a laser system, which comprises a consumption type refrigeration system, a cold accumulation circulation system and a water-cooling evaporation heat exchanger connecting the two, forming a refrigeration passage and a cold accumulation circulation passage coupled with each other; the cold accumulation circulating system is connected with the laser system to provide continuous heat dissipation for the laser system. The consumption type refrigeration system introduces high-pressure liquid refrigerant and is provided with a mixing device, under the action of the device, the pressure energy of the high-pressure liquid refrigerant is converted into kinetic energy which can be mixed, expanded and evaporated with the low-pressure superheated gaseous refrigerant after heat exchange, thus forming the consumption type refrigeration system which can be operated in an autonomous cycle without supplying other energy; therefore, the refrigerant is recycled, the energy is efficiently utilized, additional energy is not required to be provided, and the cost is saved. The refrigerating system and the cold accumulation circulating system continuously exchange heat, continuous cold energy is provided for the laser system, the laser system can obtain secondary light emitting capacity in a very short time, the environmental adaptability and the reliability of the laser system are improved, and the energy efficiency of the whole laser system is further improved. Compared with the traditional vapor compression cold accumulation technology, the system does not need to additionally use mechanical devices such as a condensation heat exchanger, a fan, a compressor and the like, reduces the complexity and the weight of the laser heat dissipation cold accumulation system, reduces the cost and increases the practicability.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A consumption type cold accumulation system for a laser system is characterized by comprising a consumption type refrigerating system, a cold accumulation circulating system and a water-cooling evaporation heat exchanger for connecting the consumption type refrigerating system and the cold accumulation circulating system, wherein a refrigerating passage and a cold accumulation circulating passage which are mutually coupled are formed; the cold accumulation circulating system is connected with the laser system; the consumption type refrigerating system comprises a high-pressure liquid refrigerant supply device, a mixing device and an expansion valve which are sequentially communicated;
the mixing device is provided with a high-pressure port, a low-pressure port and a medium-pressure port, the high-pressure port is communicated with an outlet of the high-pressure liquid refrigerant supply device, the low-pressure port is communicated with an outlet on the side of a refrigeration passage of the water-cooling evaporation heat exchanger, and the medium-pressure port is communicated with an inlet on the side of the refrigeration passage of the water-cooling evaporation heat exchanger through the expansion valve to form a refrigeration passage for the automatic cyclic utilization of the refrigerant;
when the laser system works, the cold accumulation circulating system and the consumption type refrigerating system work simultaneously to provide continuous heat dissipation for the laser system; the cold accumulation circulating system provides circulating water for the laser system, and the circulating water enters the water-cooling evaporation heat exchanger and exchanges heat with the consumption type refrigerating system;
the high-pressure liquid refrigerant output by the high-pressure liquid refrigerant supply device of the consumption type refrigerating system enters from a high-pressure port of the mixing device, the pressure energy of the high-pressure liquid refrigerant is converted into kinetic energy, the energy sucks the low-pressure superheated gaseous refrigerant output by the water-cooling evaporation heat exchanger from a low-pressure port of the mixing device, the mixed medium-pressure refrigerant enters the expansion valve through a medium-pressure port of the mixing device and forms liquid refrigerant under the action of the expansion valve, the liquid refrigerant enters the water-cooling evaporation heat exchanger and carries out evaporation heat exchange with circulating water of the cold accumulation circulating system, and cold energy is transferred to the cold accumulation circulating passage from the refrigerating passage and then transferred to the laser system.
2. The system of claim 1, wherein an evaporation pressure sensor is disposed between the expansion valve and the water-cooled evaporation heat exchanger, and a self-feedback system is disposed between the evaporation pressure sensor and the expansion valve; the evaporation pressure sensor is used for monitoring the pressure of the liquid refrigerant formed after the medium-pressure refrigerant passes through the expansion valve, and feeding the result back to the expansion valve for regulation.
3. The consumption type cold accumulation system for laser system as claimed in claim 1, wherein the outlet of the cooling path side of the water-cooled evaporating heat exchanger is further communicated with an environmental control gas system for providing environmental control gas for the laser system, thereby realizing recycling of gaseous refrigerant.
4. The system of claim 1, further comprising a control assembly disposed between the high pressure liquid refrigerant supply and the mixing device for controlling the autonomous circulation of the refrigerant in the refrigeration path.
5. The consumable cold storage system for a laser system according to claim 4, wherein the cold storage circulation system comprises a circulation temperature sensor, a cold storage water tank, a circulation pump and a circulation check valve which are communicated in sequence; the circulating temperature sensor is connected with an outlet of the cold accumulation circulating path side of the water-cooling evaporation heat exchanger, and the circulating check valve is connected with an inlet of the cold accumulation circulating path side of the water-cooling evaporation heat exchanger; the cold storage water tank is connected with the laser system to form a passage.
6. The system of claim 5, wherein a feedback regulation system is provided between the cycling temperature sensor and a control component of the system; the control component adjusts the flow and the pressure of the high-pressure liquid refrigerant output by the high-pressure liquid refrigerant supply device according to the feedback of the circulating temperature sensor.
7. The system as claimed in claim 3, wherein a gas temperature sensor and a pressure reducing valve are further disposed on the connection path between the outlet on the cooling path side of the water-cooled evaporative heat exchanger and the environmental control gas system, so as to provide the environmental control gas with appropriate temperature and pressure for the laser system.
8. The system as claimed in claim 5, wherein a liquid temperature sensor is disposed on the cold storage water tank, and a laser liquid supply pump, a liquid supply temperature sensor, a liquid supply valve and a liquid supply flow sensor are disposed on a connection path between the cold storage water tank and the laser system, so as to achieve optimal liquid supply temperature and flow of the laser system.
9. The consumption type cold accumulation system for laser system as claimed in claim 1, wherein a part of the low-pressure superheated gaseous refrigerant outputted from the cooling path side of the water-cooled evaporation heat exchanger enters from the low-pressure port of the mixing device for recycling, and the other part of the low-pressure superheated gaseous refrigerant enters into the environmental control gas system for providing environmental control gas for the laser system for recycling the refrigerant.
10. The consumable cold storage system for a laser system according to claim 4, wherein said control assembly comprises a shut-off valve, a refrigerant flow sensor and a high pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211506157.2A CN115528518B (en) | 2022-11-29 | 2022-11-29 | A consumption formula cold-storage system for laser system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211506157.2A CN115528518B (en) | 2022-11-29 | 2022-11-29 | A consumption formula cold-storage system for laser system |
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| CN115528518A true CN115528518A (en) | 2022-12-27 |
| CN115528518B CN115528518B (en) | 2023-02-03 |
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| CN115528518B (en) | 2023-02-03 |
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