CN210220275U - Pure CO2 rink refrigerating system - Google Patents
Pure CO2 rink refrigerating system Download PDFInfo
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- CN210220275U CN210220275U CN201921090854.8U CN201921090854U CN210220275U CN 210220275 U CN210220275 U CN 210220275U CN 201921090854 U CN201921090854 U CN 201921090854U CN 210220275 U CN210220275 U CN 210220275U
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Abstract
The utility model discloses a pure CO2 rink refrigerating system, the structure of which comprises a machine room, a transcritical compressor unit, an oil separator, a heat recovery heat exchanger, a CO2 low-pressure liquid storage device and a CO2 low-pressure liquid storage device pressure maintaining unit are arranged in the machine room, a CO2 cooler is arranged outdoors, and a rink pipeline heat exchanger is arranged in the rink; the pure CO2 refrigeration system is adopted, the CO2 refrigerant directly exchanges heat with the ice field pipeline heat exchanger, the evaporation temperature of the refrigerant is high, the refrigerating capacity is large, the efficiency is high, the electric power is saved, the CO2 viscosity is low, the required power of a delivery pump is small, the CO2 is used as a secondary refrigerant, liquid always exists in the evaporation pipeline, the evaporation temperature is stable, the quality of prepared ice is better, and the influence of the CO2 on the environment is smaller; is a technical innovation of one-time expansibility in the prior art, and has good popularization and use values.
Description
Technical Field
The utility model relates to the field of refrigeration technology, specifically a pure CO2 rink refrigerating system.
Background
In the existing ice rink system, a refrigerant ammonia/fluorine refrigerant is adopted, the temperature of a secondary refrigerant is reduced in a shell-and-tube heat exchanger, the secondary refrigerant is conveyed into an ice rink pipeline heat exchanger by a secondary refrigerant pump to realize heat exchange, and an ice layer is reduced to the required temperature; the secondary refrigerant has high viscosity, the power of a delivery pump is high, and the electric power requirement is high; the refrigerating medium corrodes the pipeline of the ice rink, which is unsafe; the refrigerant has great harm to environment and human.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who mainly solves how to provide a pure CO2 rink refrigerating system, adopt pure CO2 refrigerating system, CO2 refrigerant directly carries out the heat exchange with rink pipe heat exchanger, refrigerant evaporating temperature is high, the refrigerating output is big, high efficiency, save electric power, and CO2 viscosity is low, required delivery pump power is little, and CO2 is as the secondary refrigerant, there is liquid to exist all the time in the evaporating pipe, evaporating temperature is stable, the ice quality of preparing is better, and CO2 is less to the environmental impact.
In order to solve the technical problem, the utility model discloses a technical scheme be: the pure CO2 rink refrigerating system structurally comprises a machine room, a transcritical compressor unit, an oil separator, a heat recovery heat exchanger, a CO2 low-pressure liquid storage device and a CO2 low-pressure liquid storage device pressure maintaining unit, a CO2 cooler is arranged outdoors, and a rink pipeline heat exchanger is arranged in the rink;
one end of a transcritical compressor is connected with a CO2 low-pressure liquid reservoir through a pipeline a to suck gas, the transcritical compressor is divided into two pipelines to be respectively connected with an oil separator, the CO2 low-pressure liquid reservoir sucks gas, the gas enters the oil separator through the transcritical compressor pipeline a after being heated and pressurized, oil in CO2 in the oil separator is separated and returns to the transcritical compressor through a loop pipeline b to participate in circulation, the oil separator is connected with a heat recovery heat exchanger through a pipeline c, the heat recovery heat exchanger is connected with a hot water pool through a heat recovery pump, high-temperature and high-pressure CO2 gas enters the heat recovery heat exchanger, heat in the gas and low-temperature water are subjected to heat exchange in the heat recovery heat exchanger, the water can be heated to 50-95 ℃, and the water is stored in the hot water pool; the heat recovery heat exchanger is connected with a CO2 cooler through a pipeline b, the CO2 cooler is connected with a CO2 low-pressure liquid storage device through a CO2 cooler pressure maintaining valve and a CO2 liquid throttle valve which are sequentially arranged on an output pipeline, the supercooled CO2 gas is further cooled in a CO2 cooler, the maximum efficiency is exerted under the action of the CO2 cooler pressure maintaining valve, the CO2 enters a CO2 low-pressure liquid storage device after being subjected to pressure reduction and temperature reduction through a CO2 liquid throttle valve, the CO2 low-pressure liquid storage device is connected with the ice field pipeline heat exchanger in two ways, one way is connected with the ice field pipeline heat exchanger through a conveying pipeline, and the gas separated from the CO2 low-pressure liquid storage device and the gas generated from the ice field pipeline heat exchanger are sucked and compressed by a compressor; the other path of the CO2 low-pressure liquid storage device is connected with the ice field pipeline heat exchanger through a liquid delivery pump, and low-temperature low-pressure liquid in the CO2 low-pressure liquid storage device is delivered to the ice field pipeline heat exchanger through the CO2 liquid delivery pump to absorb heat of water to freeze the water into ice, so that the ice making process is completed.
Preferably, a temperature sensor is further arranged in the outdoor ice rink.
Preferably, the CO2 low-pressure reservoir is connected with a CO2 low-pressure reservoir pressure maintaining unit.
The utility model discloses can effectively solve safe on-the-spot installation difficulty, power consumption is big, the low and poor problem of security performance of efficiency, mainly to adopting pure CO2 refrigerating system, CO2 refrigerant directly carries out the heat exchange with ice rink pipe heat exchanger, refrigerant evaporating temperature is high, the refrigerating capacity is big, high efficiency, save electric power, and CO2 viscosity is low, required delivery pump power is little, CO2 is as the secondary refrigerant, there is liquid to exist all the time in the evaporating pipeline, evaporating temperature is stable, the ice quality of preparing is better, and CO2 is friendly to the environment, can satisfy technical requirement such as environmental protection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic view of the structural connection of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a pure CO2 skating rink refrigeration system includes a machine room, a transcritical compressor unit (1), an oil separator (2), a heat recovery heat exchanger (3), a CO2 low-pressure reservoir (9) and a CO2 low-pressure reservoir pressure maintaining unit (12) are installed in the machine room, a CO2 cooler (6) is installed outside the machine room, and an ice rink pipe heat exchanger (11) is installed in the ice rink;
in the specific implementation process, one end of a transcritical compressor (1) is connected with a CO2 low-pressure liquid storage device (9) through a pipeline a to suck gas, the transcritical compressor (1) is divided into two pipelines to be respectively connected with an oil separator (2), a CO2 low-pressure liquid storage device (9) sucks gas, the gas enters the oil separator (2) through the pipeline a of the transcritical compressor (1) after being heated and pressurized, oil in CO2 in the oil separator (2) is separated out and returns to the transcritical compressor (1) through a loop pipeline b to participate in circulation, the oil separator (2) is connected with a heat recovery heat exchanger (3) through a pipeline c, the heat recovery heat exchanger (3) is connected with a hot water tank (4) through a heat recovery pump (5), high-temperature and high-pressure CO2 gas enters the heat recovery heat exchanger (3), and heat exchange is carried out between heat in the gas and low-temperature water in the, the water can be heated to 50-95 ℃ and stored in the hot water pool (4) under the circulation of the heat recovery pump (5); the heat recovery heat exchanger (3) is connected with a CO2 cooler (6) through a pipeline b, the CO2 cooler (6) is connected with a CO2 low-pressure liquid storage device (9) through a CO2 cooler pressure maintaining valve (7) and a CO2 liquid throttling valve (8) which are sequentially arranged on an output pipeline, the supercooled CO2 gas is further cooled in a CO2 cooler (6) and plays the maximum efficiency under the action of the CO2 cooler pressure maintaining valve (7), the CO2 enters the CO2 low-pressure liquid storage device (9) after being subjected to pressure reduction and temperature reduction through a CO2 liquid throttling valve (8), the CO2 low-pressure liquid storage device (9) is connected with an ice field pipeline heat exchanger (11) in two ways, one way is connected with the ice field pipeline heat exchanger (11) through a conveying pipeline, and the gas separated from the CO2 low-pressure liquid storage device (9) and the gas generated from the ice field pipeline heat exchanger (11) are sucked and compressed by a compressor; the other path of the CO2 low-pressure liquid storage device (9) is connected with the ice field pipeline heat exchanger (11) through a liquid transfer pump (10), and low-temperature low-pressure liquid in the CO2 low-pressure liquid storage device (9) is transferred into the ice field pipeline heat exchanger (11) through the CO2 liquid transfer pump (10) to absorb heat of water to freeze the water into ice, so that the ice making process is completed.
In the specific implementation process, a temperature sensor is further arranged in the outdoor ice field.
In a specific implementation process, the CO2 low-pressure reservoir (9) is connected with a CO2 low-pressure reservoir pressure maintaining unit (12).
In the specific implementation process, four groups of transcritical compressors (1) are arranged.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A pure CO2 rink refrigerating system is characterized in that the structure comprises a machine room, a transcritical compressor unit, an oil separator, a heat recovery heat exchanger, a CO2 low-pressure liquid storage device and a CO2 low-pressure liquid storage device pressure maintaining unit are arranged in the machine room, a CO2 cooler is arranged outdoors, and a rink pipeline heat exchanger is arranged in the rink;
one end of a transcritical compressor is connected with a CO2 low-pressure liquid reservoir through a pipeline a to suck gas, the transcritical compressor is divided into two pipelines to be respectively connected with an oil separator, the CO2 low-pressure liquid reservoir sucks gas, the gas enters the oil separator through the transcritical compressor pipeline a after being heated and pressurized, oil in CO2 in the oil separator is separated and returns to the transcritical compressor through a loop pipeline b to participate in circulation, the oil separator is connected with a heat recovery heat exchanger through a pipeline c, the heat recovery heat exchanger is connected with a hot water pool pipeline through a heat recovery pump, high-temperature high-pressure CO2 gas enters the heat recovery heat exchanger, heat in the gas and low-temperature water exchange heat in the heat recovery heat exchanger, the water can be heated to 50-95 ℃, and the water is stored in the hot water pool under the; the heat recovery heat exchanger is connected with a CO2 cooler through a pipeline b, the CO2 cooler is connected with a CO2 low-pressure liquid storage device through a CO2 cooler pressure maintaining valve and a CO2 liquid throttle valve which are sequentially arranged on an output pipeline, the supercooled CO2 gas is further cooled in a CO2 cooler, the maximum efficiency is exerted under the action of the CO2 cooler pressure maintaining valve, the CO2 enters a CO2 low-pressure liquid storage device after being subjected to pressure reduction and temperature reduction through a CO2 liquid throttle valve, the CO2 low-pressure liquid storage device is connected with the ice field pipeline heat exchanger in two ways, one way is connected with the ice field pipeline heat exchanger through a conveying pipeline, and the gas separated from the CO2 low-pressure liquid storage device and the gas generated from the ice field pipeline heat exchanger are sucked and compressed by a compressor; the other path of the CO2 low-pressure liquid storage device is connected with the ice field pipeline heat exchanger through a liquid delivery pump, and low-temperature low-pressure liquid in the CO2 low-pressure liquid storage device is delivered to the ice field pipeline heat exchanger through the CO2 liquid delivery pump to absorb heat of water to freeze the water into ice, so that the ice making process is completed.
2. The pure CO2 rink refrigeration system according to claim 1, wherein a temperature sensor is further installed in the outdoor rink.
3. The pure CO2 rink refrigeration system according to claim 1, wherein the CO2 low pressure accumulator is connected to a CO2 low pressure accumulator pressure maintenance unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090854.8U CN210220275U (en) | 2019-07-12 | 2019-07-12 | Pure CO2 rink refrigerating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090854.8U CN210220275U (en) | 2019-07-12 | 2019-07-12 | Pure CO2 rink refrigerating system |
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| CN210220275U true CN210220275U (en) | 2020-03-31 |
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| CN201921090854.8U Active CN210220275U (en) | 2019-07-12 | 2019-07-12 | Pure CO2 rink refrigerating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285596A (en) * | 2019-07-12 | 2019-09-27 | 山东神舟制冷设备有限公司 | A kind of pure CO2Refrigerating system of ice rink |
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2019
- 2019-07-12 CN CN201921090854.8U patent/CN210220275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285596A (en) * | 2019-07-12 | 2019-09-27 | 山东神舟制冷设备有限公司 | A kind of pure CO2Refrigerating system of ice rink |
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