CN108168164B - Gas-liquid separation oil return equipment of ammonia refrigeration system - Google Patents
Gas-liquid separation oil return equipment of ammonia refrigeration system Download PDFInfo
- Publication number
- CN108168164B CN108168164B CN201810148632.0A CN201810148632A CN108168164B CN 108168164 B CN108168164 B CN 108168164B CN 201810148632 A CN201810148632 A CN 201810148632A CN 108168164 B CN108168164 B CN 108168164B
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- China
- Prior art keywords
- pipe
- oil
- side wall
- gas
- barrel
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 14
- 238000000926 separation method Methods 0.000 title claims abstract description 14
- 239000003921 oil Substances 0.000 claims abstract description 45
- 239000003507 refrigerant Substances 0.000 claims abstract description 32
- 239000010687 lubricating oil Substances 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
Abstract
The invention discloses a gas-liquid separation oil return device of an ammonia refrigeration system, which comprises a barrel with a trapezoidal axial section of a side wall, an air inlet at the upper part of the side wall of the barrel is connected with an air inlet pipe for introducing refrigerant liquid and lubricating oil carried by a self-evaporator into the barrel, an orifice on a circular bottom cover of the barrel is connected with an oil collecting bag, an air return port on a circular top cover of the barrel is connected with an air return pipe for returning the refrigerant gas in the barrel to a refrigeration compressor, the diameter of a circular top cover is larger than that of a circular bottom cover, and an opening of the side wall of the air return pipe is connected with an oil return hole on the side wall of the oil collecting bag through an oil suction pipe; a spiral hot air pipe is arranged in the cylinder body and close to the circular bottom cover; the inlet of the hot air pipe extending out of the cylinder body is connected with the exhaust connecting pipe of the refrigeration compressor, and the outlet is connected with the inlet connecting pipe of the condenser. The invention utilizes the refrigerant gas carrying liquid and lubricating oil to form rotational flow in the cylinder body to realize separation, and the lubricating oil is sucked by the refrigerant gas and is brought back to the compressor through the oil pipe, thereby ensuring the reliable and efficient operation of the refrigeration system.
Description
Technical Field
The invention relates to the technical field of refrigeration, refrigeration and refrigeration, in particular to gas-liquid separation oil return equipment of an ammonia refrigeration system.
Background
In the technical field of refrigeration and refrigeration, a large ammonia refrigeration system is widely used, in order to prevent refrigerant liquid carried by refrigerant gas from entering a refrigeration compressor and causing the occurrence of liquid impact accidents of the refrigeration compressor, a gas-liquid separator is usually arranged at an outlet of an evaporator, however, lubricating oil is carried by the refrigerant gas at the outlet of the evaporator while the refrigerant liquid is carried, if the lubricating oil does not timely return to the refrigeration compressor, the refrigeration compressor is starved of oil, sealing cannot be ensured, volumetric efficiency is reduced, and gas transmission capacity is reduced. Meanwhile, the relative running surfaces of the refrigeration compressor cannot be well lubricated, the power consumption is increased, the performance of the refrigeration system and the reliability of the refrigeration compressor are reduced, and the utilization space of the gas-liquid separator is affected by the refrigerant gas mixed in the refrigerant liquid.
Disclosure of Invention
The invention aims at solving the technical defects existing in the prior art, and provides gas-liquid separation oil return equipment of an ammonia refrigeration system in the technical field of refrigeration, refrigeration and refrigeration, so as to further improve the operation performance of the refrigeration system and ensure the reliability of a refrigeration compressor.
The technical scheme adopted for achieving the purpose of the invention is as follows:
the utility model provides an ammonia refrigerating system gas-liquid separation oil return equipment, includes that the axial cross-section of lateral wall is the barrel of trapezoidal form, the barrel be close to the air inlet connection on the lateral wall on circular top cap edge be used for leading into the intake pipe in the barrel entrained refrigerant liquid and the refrigerant gas of lubricating oil that comes out from the evaporimeter, set up the drill way on the circular bottom of barrel and connect with the oil collecting pocket, the return air mouth on the circular top cap of barrel is connected and is used for sending the refrigerant gas that separates in the barrel back the muffler of refrigeration compressor, the diameter of circular top cap is greater than the diameter of circular bottom, the lateral wall opening of muffler is connected with the oil return hole on the lateral wall of oil collecting pocket by the oil suction pipe, the oil suction pipe is connected with oil collecting pocket and muffler through horizontal tube section, be formed with one-level U type return pipe, at least a set of reverse U type return pipe and the classifying U type return pipe that are connected from oil collecting pocket side on the riser section of oil suction pipe; a spiral hot air pipe is arranged in the cylinder body at a position close to the circular bottom cover; the inlet and the outlet of the hot air pipe extend out of the cylinder body from the side wall of the cylinder body, the inlet of the hot air pipe is connected with an exhaust connecting pipe of the refrigeration compressor, and the outlet of the hot air pipe is connected with an inlet connecting pipe of the condenser.
The cylinder is formed by welding a circular top cover, a circular bottom cover and a side wall, the air inlet is welded with the air inlet pipe, and the orifice formed in the circular bottom cover is welded with the oil collecting bag.
The inlet and outlet of the hot air pipe pass through the orifice on the side wall of the cylinder body and are connected with the side wall in a sealing and welding way.
The bottom of the round bottom cover is welded with a bracket.
The invention uses the refrigerant gas with liquid and lubricating oil to form a rotational flow in the cylinder, the refrigerant gas flows out of the cylinder from the air return connecting pipe at the upper part in the center of the rotational flow, because the density of the liquid and the lubricating oil is higher than that of the gas, the lubricating oil and the liquid flow to the bottom of the cylinder along the inner wall of the cylinder under the action of centrifugal force, thereby realizing effective separation with the refrigerant gas, the lubricating oil accumulated at the bottom is sucked by the refrigerant gas and is brought back to the compressor through the oil pipe with the oil return bend, thereby ensuring that the lubricating oil is brought back to the refrigeration compressor in time, preventing the liquid from entering the refrigeration compressor, and ensuring the reliability of the compressor. The exhaust heat of the refrigeration compressor is utilized to heat the refrigerant liquid, and mixed refrigerant gas is separated out, so that the reliable and efficient operation of the refrigeration system is ensured.
Drawings
FIG. 1 is a schematic diagram of a gas-liquid separation oil return apparatus of an ammonia refrigeration system of the present invention;
fig. 2 shows a top view of fig. 1.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-2, an ammonia refrigeration system gas-liquid separation oil return device comprises:
the axial section of the side wall is a trapezoid barrel 6, an air inlet at the upper part of the side wall of the barrel is connected with an air inlet pipe 7 used for introducing refrigerant gas carrying refrigerant liquid and lubricating oil from an evaporator into the barrel, a circular bottom cover of the barrel is provided with an orifice and is connected with a oil collecting bag 3, an air return port on a circular top cover of the barrel is connected with an air return pipe 1 used for sending the refrigerant gas separated in the barrel back to a refrigeration compressor, the diameter of the circular top cover is larger than that of the circular bottom cover, an opening of the side wall of the air return pipe is connected with an oil return hole on the side wall of the oil collecting bag 3 through an oil suction pipe 2, the oil suction pipe is connected with the oil collecting bag through a first horizontal pipe section 20 of the oil suction pipe, the first vertical pipe section is connected with a first vertical pipe section 22 through a first-stage U-shaped bent pipe 21, the first vertical pipe section is connected with a second vertical pipe section 25 through an inverted U-shaped bent pipe 23 and a grading U-shaped bent pipe 24 which are connected with the second vertical pipe section 25 through a second horizontal pipe section 26; a spiral hot air pipe 5 is arranged in the cylinder body at a position close to the circular bottom cover; the inlet and the outlet of the hot air pipe extend out of the cylinder body from the side wall of the cylinder body, and the inlet of the hot air pipe is connected with an exhaust connecting pipe of the refrigeration compressor, and the outlet of the hot air pipe is connected with an inlet connecting pipe of the condenser.
The cylinder 6 is formed by welding a circular top cover, a circular bottom cover and a side wall, an air inlet pipe is welded at the side wall part close to the edge of the circular top cover, and an orifice formed in the circular bottom cover is welded with the oil collecting bag 3.
Wherein, the hot air pipe 5 is arranged in the cylinder 6 near the circular bottom cover, and the inlet and the outlet of the hot air pipe pass through the orifice on the side wall of the cylinder 6 and are in sealed welding connection with the side wall.
The size of the cylinder 6 is determined according to the refrigeration load of the refrigeration system.
It should be noted that, in the present invention, the number of the sections of the inverted U-shaped bent pipe and the graded U-shaped bent pipe, which form the "S" shaped structure, may be one group as shown in fig. 1 or may be multiple groups, and may be specifically determined according to the size of the cylinder 2, and is not limited to the embodiment of fig. 1.
Wherein, the bottom of the round bottom cover is welded with a bracket 4 to support the cylinder 6.
When the refrigerating system is in operation, refrigerant gas from the evaporator entrains refrigerant liquid and lubricating oil, the refrigerant gas enters the cylinder 6 through the air inlet pipe 7, a rotational flow is formed in the cylinder, and the gas flows out of the cylinder from the upper muffler 1 in the center of the rotational flow and enters the refrigerating compressor. Because the density of the liquid and the lubricating oil is greater than that of the gas, the lubricating oil and the liquid flow to the bottom of the cylinder along the inner wall of the cylinder under the action of centrifugal force, and also because the density of the lubricating oil is greater than that of ammonia liquid, the lubricating oil is deposited in the oil collecting pocket 3 at the lowest part of the bottom of the cylinder, is sucked into the muffler 1 by the refrigerant gas through the oil suction pipe 2 and then is brought back to the compressor, the lubricating oil is gathered at the first-stage U-shaped bend, the two ends of the bent pipe are blocked when the lubricating oil gathers to a certain amount, the two sides form pressure difference, the lubricating oil gathers at the graded U-shaped bend, the two ends of the bent pipe are blocked when the lubricating oil gathers to a certain amount, the two sides form pressure difference, the lubricating oil is sucked into the muffler 1 under the action of the pressure difference, the refrigerant gas is brought into the refrigerating compressor, the hot gas pipe 5 arranged in the cylinder heats the refrigerant liquid by the exhaust heat of the refrigerating compressor, and the mixed refrigerant gas is separated and separated.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (4)
1. The gas-liquid separation oil return equipment of the ammonia refrigeration system is characterized by comprising a barrel with a trapezoid-shaped axial section of a side wall, wherein the barrel is formed by welding a round top cover, a round bottom cover and the side wall, an air inlet is formed in the side wall, close to the edge of the round top cover, of the barrel, the air inlet is connected with an air inlet pipe, and the air inlet pipe is used for introducing refrigerant gas with refrigerant liquid and lubricating oil from an evaporator into the barrel; an orifice is formed in the circular bottom cover of the cylinder body, the orifice is connected with the oil collecting bag, a gas return port is formed in the circular top cover of the cylinder body, the gas return port is connected with a gas return pipe used for returning refrigerant gas separated in the cylinder body to the refrigeration compressor, the diameter of the circular top cover is larger than that of the circular bottom cover, an opening on the side wall of the gas return pipe is connected with an oil return hole on the side wall of the oil collecting bag through an oil suction pipe, and the oil suction pipe is connected with the oil collecting bag and the gas return pipe through a first horizontal pipe section; the first vertical pipe section is connected with a second vertical pipe section through a second horizontal pipe section; a spiral hot air pipe is arranged in the cylinder body at a position close to the circular bottom cover; the inlet and the outlet of the hot air pipe extend out of the cylinder body from the side wall of the cylinder body, the inlet of the hot air pipe is connected with an exhaust connecting pipe of the refrigeration compressor, and the outlet of the hot air pipe is connected with an inlet connecting pipe of the condenser.
2. The ammonia refrigeration system gas-liquid separation oil return device according to claim 1, wherein the air inlet is welded with the air inlet pipe, and the orifice formed in the round bottom cover is welded with the oil collecting bag.
3. The ammonia refrigeration system gas-liquid separation oil return device of claim 1, wherein the inlet and outlet of the hot air pipe pass through an orifice in the side wall of the cylinder and are in sealing and welding connection with the side wall.
4. The ammonia refrigeration system gas-liquid separation oil return device according to claim 1, wherein a bracket is welded at the bottom of the circular bottom cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148632.0A CN108168164B (en) | 2018-02-13 | 2018-02-13 | Gas-liquid separation oil return equipment of ammonia refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148632.0A CN108168164B (en) | 2018-02-13 | 2018-02-13 | Gas-liquid separation oil return equipment of ammonia refrigeration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108168164A CN108168164A (en) | 2018-06-15 |
| CN108168164B true CN108168164B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810148632.0A Active CN108168164B (en) | 2018-02-13 | 2018-02-13 | Gas-liquid separation oil return equipment of ammonia refrigeration system |
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| Country | Link |
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| CN (1) | CN108168164B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390198A (en) * | 2021-07-16 | 2021-09-14 | 珠海市华晶农谷微冻瞬冷科学研究院 | Ammonia refrigeration system based on trace ammonia |
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|---|---|---|---|---|
| JPH07189908A (en) * | 1993-12-28 | 1995-07-28 | Mitsubishi Electric Corp | Accumulator and refrigeration cycle device |
| CN101994680A (en) * | 2009-08-25 | 2011-03-30 | 上海日立电器有限公司 | Compressor isolating motor stator from pump body |
| CN202547029U (en) * | 2012-04-16 | 2012-11-21 | 珠海格力电器股份有限公司 | Fixing device for oil separator |
| CN202792746U (en) * | 2012-08-17 | 2013-03-13 | 广东美的暖通设备有限公司 | Gas-liquid separator |
| CN203385255U (en) * | 2013-06-17 | 2014-01-08 | 南京天加空调设备有限公司 | Gas-liquid separator for double-parallel-compressor multi-connected air conditioning system |
| CN103528287A (en) * | 2013-10-17 | 2014-01-22 | 南京金典制冷实业有限公司 | Multifunctional integrated horizontal vessel for refrigerating unit and operation method |
| CN104248859A (en) * | 2014-09-12 | 2014-12-31 | 四川大学 | Falling film evaporation process in single-way multi-effect stand pipe and equipment configuration method |
| CN204555461U (en) * | 2015-04-03 | 2015-08-12 | 潍坊三九冷暖设备科技有限公司 | Suction-jet type oil separating device and apply the refrigeration system of this device |
| CN104833143A (en) * | 2015-04-15 | 2015-08-12 | 王子忠 | Multi-tube heat recovery type gas-liquid separation device |
| CN105492232A (en) * | 2013-12-31 | 2016-04-13 | 翰昂系统株式会社 | Cooling module and cooling system for vehicle |
| CN207999973U (en) * | 2018-02-13 | 2018-10-23 | 天津商业大学 | A kind of ammonia refrigeration system gas-liquid separation oil return equipment |
-
2018
- 2018-02-13 CN CN201810148632.0A patent/CN108168164B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07189908A (en) * | 1993-12-28 | 1995-07-28 | Mitsubishi Electric Corp | Accumulator and refrigeration cycle device |
| CN101994680A (en) * | 2009-08-25 | 2011-03-30 | 上海日立电器有限公司 | Compressor isolating motor stator from pump body |
| CN202547029U (en) * | 2012-04-16 | 2012-11-21 | 珠海格力电器股份有限公司 | Fixing device for oil separator |
| CN202792746U (en) * | 2012-08-17 | 2013-03-13 | 广东美的暖通设备有限公司 | Gas-liquid separator |
| CN203385255U (en) * | 2013-06-17 | 2014-01-08 | 南京天加空调设备有限公司 | Gas-liquid separator for double-parallel-compressor multi-connected air conditioning system |
| CN103528287A (en) * | 2013-10-17 | 2014-01-22 | 南京金典制冷实业有限公司 | Multifunctional integrated horizontal vessel for refrigerating unit and operation method |
| CN105492232A (en) * | 2013-12-31 | 2016-04-13 | 翰昂系统株式会社 | Cooling module and cooling system for vehicle |
| CN104248859A (en) * | 2014-09-12 | 2014-12-31 | 四川大学 | Falling film evaporation process in single-way multi-effect stand pipe and equipment configuration method |
| CN204555461U (en) * | 2015-04-03 | 2015-08-12 | 潍坊三九冷暖设备科技有限公司 | Suction-jet type oil separating device and apply the refrigeration system of this device |
| CN104833143A (en) * | 2015-04-15 | 2015-08-12 | 王子忠 | Multi-tube heat recovery type gas-liquid separation device |
| CN207999973U (en) * | 2018-02-13 | 2018-10-23 | 天津商业大学 | A kind of ammonia refrigeration system gas-liquid separation oil return equipment |
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| CN108168164A (en) | 2018-06-15 |
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