CN109140850B - Refrigerant filling method of water-cooling oil cooling refrigeration system - Google Patents
Refrigerant filling method of water-cooling oil cooling refrigeration system Download PDFInfo
- Publication number
- CN109140850B CN109140850B CN201811094897.3A CN201811094897A CN109140850B CN 109140850 B CN109140850 B CN 109140850B CN 201811094897 A CN201811094897 A CN 201811094897A CN 109140850 B CN109140850 B CN 109140850B
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- distribution
- pipeline
- pressure
- water
- 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.)
- Active
Links
Images
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
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- 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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/001—Charging refrigerant to a cycle
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a refrigerant filling method of a water-cooling oil cooling refrigeration system, which adopts a filling device mainly composed of a refrigerant container, a distribution station, a main pipeline, a first distribution pipeline and a second distribution pipeline to fill refrigerant into the water-cooling oil cooling refrigeration system, wherein the distribution station is provided with a pressure gauge, the refrigerant container is connected with the distribution station through the main pipeline, one end of the first distribution pipeline is connected with the distribution station, the other end of the first distribution pipeline is connected with a connecting pipeline between a low-pressure circulation liquid storage device and an evaporator, one end of the second distribution pipeline is connected with the distribution station, the other end of the second distribution pipeline is connected with a connecting pipeline between a high-pressure liquid storage device and a throttle valve, and the main pipeline, the first distribution pipeline and the second. The filling method has the advantages of simple structure, convenient operation, safety, reliability, clear program, high filling efficiency and the like.
Description
Technical Field
The invention relates to the technology in the field of refrigeration systems, in particular to a refrigerant filling method of a water-cooling oil cooling refrigeration system.
Background
The refrigeration system is generally divided into a thermosiphon oil cooling system and a water cooling system, as shown in fig. 1, the water cooling oil cooling refrigeration system 7 includes a condenser 71, a high-pressure accumulator 72, a throttle valve 73, a low-pressure circulation accumulator 74, a refrigerant pump 75, an evaporator 76 and a compressor 77, the condenser 71, the high-pressure accumulator 72, the throttle valve 73, the low-pressure circulation accumulator 74 and the compressor 77 are connected in sequence through a connecting pipeline 78 to form a loop, and the low-pressure circulation accumulator 74, the refrigerant pump 75 and the evaporator 76 are connected in sequence through the connecting pipeline 78 to form another loop.
In recent years, leakage accidents of a water-cooling oil cooling refrigeration system in a refrigerant filling process occupy a considerable proportion, the main reasons are that the adopted refrigerant filling device is complex in structure and inconvenient to operate, and meanwhile, the filling method is unscientific, the filling program rhythm is fuzzy, and the filling thought is unclear. And the filling method adopting the existing refrigerant filling device has lower speed, and the compressor needs to be frequently started for auxiliary filling in the filling process, so that the fault probability during refrigerant filling is greatly increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a refrigerant filling method of a water-cooling oil cooling refrigeration system, which adopts a filling device with simple structure and convenient operation and is safe, reliable, clear in program and high in filling efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a refrigerant filling method of a water-cooling oil cooling refrigerating system is characterized in that a filling device mainly composed of a refrigerant container, a distribution station, a main pipeline, a first distribution pipeline and a second distribution pipeline is adopted to fill refrigerant into the water-cooling oil cooling refrigerating system, a pressure gauge is arranged on the distribution station, the refrigerant container is connected with the distribution station through the main pipeline, one end of the first distribution pipeline is connected with the distribution station, the other end of the first distribution pipeline is connected with a connecting pipeline between a low-pressure circulation liquid storage device and an evaporator, one end of the second distribution pipeline is connected with the distribution station, the other end of the second distribution pipeline is connected with a connecting pipeline between a high-pressure liquid storage device and a throttle valve, and switch valves are arranged at one ends, close to the distribution station, of the main pipeline, the.
As a further improvement of the above technical solution:
the main pipeline is a rubber hose, and the first distribution pipeline and the second distribution pipeline are seamless steel pipes.
The distribution station is connected with a standby pipeline, and the standby pipeline is also provided with a switch valve.
The filling method comprises the following steps:
s1: closing all valves and opening a refrigerant container, slowly opening a throttle valve, a switch valve on a main pipeline and a switch valve on a second distribution pipeline, and filling a high-pressure liquid storage tank with a refrigerating system;
s2: when the internal pressure of the high-pressure liquid storage device is close to or even with that of the refrigerant container, closing or reducing the throttle valve, closing the switch valve on the second distribution pipeline, starting the compressor and reducing the internal pressure of the low-pressure circulation liquid storage device;
s3: opening a switch valve on the first distribution pipeline to fill the low-pressure circulation liquid storage device, and closing the refrigerant container when the refrigerant in the high-pressure liquid storage device and the low-pressure circulation liquid storage device reaches the designed height;
s4: the switch valve on the fully-opened first distribution pipeline keeps the compressor open, and the refrigerants in the distribution station, the main pipeline and the first distribution pipeline are pumped into the low-pressure circulation liquid storage device;
s5: when the pressure gauge is close to the value of 0 and the surface of the distribution station stops frosting, closing the switch valves on the compressor and the main pipeline;
s6: the main pipe is removed.
The designed height of the refrigerant in the high-pressure accumulator is 70% of the total height in the step S3, and the designed height of the refrigerant in the low-pressure circulation accumulator is 25% or 40% or 60% or 65% of the total height.
The main pipeline is connected to the distribution station through a connecting flange, and when the main pipeline is connected with the distribution station, the outflow state of the refrigerant in the refrigerant container is detected, wherein the detection comprises the following steps:
y1: a gap is reserved between the flange and the main pipeline;
y2: slightly opening a switch valve on the main pipeline, and when white mist escapes from the gap, proving that the refrigerant in the refrigerant container smoothly flows out;
y3: and screwing the flange to tightly communicate the main pipeline with the distribution station.
The refrigerant in the refrigerant container is ammonia or freon.
Step S1, detecting the leakage condition of the refrigerant, when the refrigerant in the refrigerant container is ammonia, closing the switch valve on the second distribution pipeline when the pressure of the water-cooling oil cooling refrigeration system reaches 0.1-0.2 Mpa, and detecting the leakage by making phenolphthalein or litmus test paper close to each connection of the filling device; when the refrigerant in the refrigerant container is Freon, when the pressure of the water-cooling oil cooling refrigeration system reaches 0.2-0.3 Mpa, the switch valve on the second distribution pipeline is closed, leakage detection is carried out by enabling phenolphthalein or litmus test paper to be close to each joint of the filling device, and leakage detection is carried out by coating soap water on each joint of the filling device.
And the suction pressure of the compressor in the step S2 is not lower than 0.15 MPa.
The refrigerant pump is also turned on in step S2.
Compared with the prior art, the invention has the advantages that:
the refrigerant filling method of the water-cooling oil cooling refrigeration system adopts a filling device which mainly comprises a refrigerant container, a distribution station, a main pipeline, a first distribution pipeline and a second distribution pipeline to fill refrigerant into the water-cooling oil cooling refrigeration system, wherein the distribution station is provided with a pressure gauge, the refrigerant container is connected with the distribution station through the main pipeline, one end of the first distribution pipeline is connected with the distribution station, the other end of the first distribution pipeline is connected with a connecting pipeline between a low-pressure circulating liquid storage device and an evaporator, one end of the second distribution pipeline is connected with the distribution station, the other end of the second distribution pipeline is connected with a connecting pipeline between a high-pressure liquid storage device and a throttle valve, and the main pipeline, the first distribution pipeline and the second distribution. The filling device mainly composed of the refrigerant container, the distribution station, the main pipeline, the first distribution pipeline and the second distribution pipeline is adopted to fill refrigerant into the water-cooling oil cooling refrigeration system.
Drawings
FIG. 1 is a schematic diagram of a water-cooled oil cooling refrigeration system.
FIG. 2 is a schematic diagram of the refrigerant charge process for a water-cooled oil cooling refrigeration system of the present invention.
FIG. 3 is a schematic diagram of the method of filling the refrigerant in the water-cooled oil cooling refrigeration system of the present invention.
The reference numerals in the figures denote:
1. a refrigerant container; 2. a distribution station; 21. a pressure gauge; 22. a standby pipeline; 3. a main pipeline; 4. a first distribution conduit; 5. a second distribution pipe; 6. an on-off valve; 7. the cold oil cools the refrigerating system; 71. a condenser; 72. a high pressure reservoir; 73. a throttle valve; 74. a low pressure circulating reservoir; 75. a refrigerant pump; 76. an evaporator; 77. a compressor; 78. and connecting the pipelines.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
Fig. 2 and fig. 3 show a refrigerant filling method of the water-cooling oil cooling refrigeration system of the present embodiment, a filling device mainly composed of a refrigerant container 1, a distribution station 2, a main pipe 3, a first distribution pipeline 4 and a second distribution pipeline 5 is adopted to fill refrigerant into the water-cooling oil cooling refrigeration system 7, a pressure gauge 21 is arranged on the distribution station 2, the refrigerant container 1 is connected with the distribution station 2 through the main pipe 3, one end of the first distribution pipeline 4 is connected with the distribution station 2, and at the other end to a connection line 78 between the low-pressure circulation reservoir 74 and the evaporator 76, and a second distribution line 5 at one end to the distribution station 2, the other end of the main pipe 3, the first distribution pipe 4 and the second distribution pipe 5 are provided with a switch valve 6 at one end close to the distribution station 2, and the other end of the main pipe is connected to a connecting pipe 78 between the high pressure reservoir 72 and the throttle valve 73. A filling device mainly composed of a refrigerant container 1, a distribution station 2, a main pipeline 3, a first distribution pipeline 4 and a second distribution pipeline 5 is adopted to fill refrigerant into a water-cooling oil cooling refrigeration system 7.
In this embodiment, the main pipe 3 is a rubber hose, and the first distribution pipe 4 and the second distribution pipe 5 are both seamless steel pipes.
In this embodiment, a spare pipe 22 is connected to the distribution station 2, and the spare pipe 22 is also provided with the on-off valve 6. The backup pipe 22 is used to connect the backup refrigerant container 1.
In this embodiment, the refrigerant charging method of the water-cooling oil cooling refrigeration system includes the following steps:
s1: the valves are closed and the refrigerant container 1 is opened, then the throttle valve 73, the switch valve 6 on the main pipe 3 and the switch valve 6 on the second distribution pipe 5 are opened slowly, and the high-pressure liquid storage 72 is filled with the refrigerant; in this step, the refrigerant is filled into the high pressure accumulator 72 by using the pressure difference between the refrigerant container 1 and the high pressure accumulator 72, and when the distribution station 2, the main pipe 3 and the second distribution pipe 5 produce white frost and generate fine flow sound, the refrigerant is smoothly added into the high pressure accumulator 72;
s2: when the internal pressure of the high-pressure accumulator 72 is close to or equal to the internal pressure of the refrigerant container 1, the throttle valve 73 is closed or reduced, the on-off valve 6 on the second distribution pipe 5 is closed, the compressor 77 is started after cooling water is supplied to the condenser 71, the compressor 77 is slowly loaded several times, the internal pressure of the low-pressure circulation accumulator 74 is reduced, the pressure difference between the refrigerant container 1 and the low-pressure circulation accumulator 74 is increased, conditions are created for the refrigerant in the refrigerant container 1 to flow into the low-pressure circulation accumulator 74, and the refrigerant is simultaneously delivered from the low-pressure circulation accumulator 74 to the high-pressure accumulator 72 of the high-pressure part through the compressor 77; controlling the suction pressure of the compressor 77 not lower than 0.15MPa (absolute pressure) in the process; when the low-pressure circulation accumulator 74 is low in the rate of pumping the refrigerant by the compressor 77, the refrigerant pump 75 is turned on to supply the refrigerant to the evaporator 76 and/or the number of the compressors 77 turned on is increased to increase the rate of refrigerant delivery from the low-pressure circulation accumulator 74 to the high-pressure accumulator 72;
s3: the on-off valve 6 on the first distribution pipeline 4 is opened to charge the low-pressure circulation liquid accumulator 74, the refrigerant liquid level heights in the high-pressure liquid accumulator 72 and the low-pressure circulation liquid accumulator 74 are observed, when the refrigerant liquid level heights in the high-pressure liquid accumulator 72 and the low-pressure circulation liquid accumulator 74 reach the designed height (the refrigerant liquid level height in the high-pressure liquid accumulator 72 is 70 percent of the total height), the refrigerant charge amount of the refrigeration system meets the requirement, and the refrigeration container 1 is closed. In this step, when the liquid level of the refrigerant in the high-pressure accumulator 72 reaches 70% first, the throttle valve 73 is opened or opened to accelerate the flow of the refrigerant from the high-pressure accumulator 72 to the low-pressure circulation accumulator 74, and the refrigerant level in the high-pressure accumulator 72 is kept to be not more than 70%; while turning off some or all of the refrigerant pumps 75 that have been turned on, reducing or stopping the supply of refrigerant to the evaporator 76, turning off some of the compressors 77 that have been turned on (reducing the load on the compressors 77 when only one compressor 77 is turned on), reducing the rate at which refrigerant is delivered from the low-pressure circulation accumulator 74 to the high-pressure accumulator 72;
when the liquid level of the refrigerant in the low-pressure circulation receiver 74 first reaches the design level (control level), the throttle valve 73 is closed or opened to stop or reduce the flow of the refrigerant from the high-pressure receiver 72 to the low-pressure circulation receiver 74; simultaneously, a greater number of refrigerant pumps 75 can be turned on to supply refrigerant to the evaporator 76 and/or a greater number of compressors 77 can be turned on (only one compressor 77 is turned on, and the compressor 77 can be first loaded when not running at full capacity) to increase the rate at which refrigerant is delivered from the low-pressure circulation accumulator 74 to the high-pressure accumulator 72; the opening degree of the on-off valve 6 on the first distribution pipe 4 can also be appropriately reduced;
when the liquid level of the refrigerant in the high-pressure liquid accumulator 72 reaches 70% and the low-pressure circulating liquid accumulator 74 reaches a control height, the refrigerant filling amount of the refrigeration system meets the requirement, and a switch valve arranged on the refrigerant container 1 is closed;
low pressure circulation reservoir 74 liquid level design height (control height): for the water-cooling oil cooling refrigeration system 7 with the evaporator 76 adopting a high-inlet and low-outlet refrigerant supplying mode, after the refrigerant pump 75 stably operates for 15 minutes, the refrigerant height of the low-pressure circulation liquid accumulator 74 can be controlled according to 25%, and after the refrigerant pump 75 stops operating for 15 minutes, the refrigerant height of the low-pressure circulation liquid accumulator 74 can be controlled according to 65%; for the water-cooling oil cooling refrigeration system 7 with the evaporator 76 adopting a low-pressure inlet and high-pressure outlet refrigerant mode, after the refrigerant pump 75 stably operates for 15 minutes, the refrigerant height of the low-pressure circulation liquid accumulator 74 can be controlled according to 40%, and after the refrigerant pump 75 stops operating for 15 minutes, the refrigerant height of the low-pressure circulation liquid accumulator 74 can be controlled according to 60%;
s4: the on-off valve 6 of the first distribution pipe 4 is fully opened, and the refrigerant in the distribution station 2, the main pipe 3, and the first distribution pipe 4 is pumped into the low-pressure circulation receiver 74 while the compressor 77 is kept open. In this step, when the amount of refrigerant 7 charged into the water-cooling oil cooling refrigeration system satisfies the requirement, the on-off valve 6 in the first distribution pipe 4 is fully opened, the compressor 77 is kept open, and the refrigerant in the distribution station 2, the main pipe 3, and the first distribution pipe 4 is pumped into the low-pressure circulation accumulator 74. In the process, the evaporation of the ammonia liquid in the distribution station 2 can be accelerated by wiping the frost on the surface of the distribution station 2 or spraying water on the surface of the distribution station 2;
s5: when the pressure gauge 21 approaches 0 and the frost formation on the surface of the distribution station 2 stops, it indicates that the ammonia liquid in the distribution station 2 is completely evaporated. Closing the on-off valve 6 on the compressor 77 and the main pipe 3; in the step, the pressure gauge 21 is observed, and when the pressure value of the pressure gauge 21 is close to 0, the compressor 77 and the switch valve 6 on the main pipeline 3 are closed to prepare for next unloading work;
during the refrigerant charging process, the operator should perform a rough check on the amount of the charged refrigerant according to the refrigerant level in the main liquid storage devices such as the high-pressure liquid storage device 72 and the low-pressure circulation liquid storage device 74, and the refrigerant capacity in the connecting pipe 78 and the evaporator 76 when the refrigerant pump 75 is operating, and if the error is large, the operator should re-check the opening and closing condition of the valve to be opened in the refrigeration system 7. The refrigerant charge amount for the first time is controlled according to 90% of the calculated charge amount, and even if the refrigerant height in the high-pressure liquid storage device 72 and the low-pressure circulating liquid storage device 74 does not reach the height requirement, the charge is stopped, test running is carried out, whether the charged refrigerant amount meets the operation requirement or not is checked, and excessive charge is avoided. If necessary, the second filling is carried out, and the filling process is still carried out again according to the method;
s6: the main pipe 3 is unloaded. In the step, a connecting flange of the main pipeline 3 and a switching valve 6 on the main pipeline 3 is disassembled, a gap is slightly opened, and the refrigerant remained in the main pipeline 3 is slowly discharged (for the Freon refrigerant, ventilation can be enhanced, Freon gas dissipation is accelerated, and for the ammonia refrigerant, water mist can be sprayed to the filling position of the refrigerant to absorb ammonia gas). After the refrigerant in the main pipe 3 is completely released, the main pipe 3 is removed, and the first distribution pipe 4 and the second distribution pipe 5 can also be removed, so that the filling device is completely removed for storage or filling for the next water-cooling oil cooling refrigeration system 7.
In this embodiment, the main pipe 3 is connected to the distribution station 2 through a connection flange, and when the main pipe 3 is connected to the distribution station 2, the outflow state of the refrigerant in the refrigerant container 1 is detected, and the detection includes the following steps:
y1: a gap is reserved between the flange and the main pipeline 3;
y2: slightly opening the switch valve 6 on the main pipeline 3, and when white mist escapes from the gap, proving that the refrigerant in the refrigerant container 1 smoothly flows out;
y3: the flanges are tightened to tightly connect the main pipe 3 with the distribution station 2.
Refrigerant among the refrigerant container 1 is ammonia or freon, connect 3 one ends of trunk line in refrigerant container 1, the other end passes through flange joint with distribution station 2, leave the gap slightly, the ooff valve 6 on the trunk line 3 of slightly opening, carefully observe gap department, if there is little white fog to escape, prove that the refrigerant can flow out smoothly, can flow out refrigerant container 1 smoothly confirming the refrigerant, and behind the air in the trunk line 3 of having discharged, screw up the flange, make trunk line 3 and distribution station 2 closely communicate.
In this embodiment, the step S1 further includes detecting leakage of the refrigerant, and when the refrigerant in the refrigerant container is ammonia, and when the pressure of the water-cooling oil cooling refrigeration system reaches 0.1 to 0.2Mpa, closing the on-off valve 6 on the second distribution pipeline, and detecting leakage by making phenolphthalein or litmus test paper close to each connection of the filling device; when the refrigerant in the refrigerant container is Freon, when the pressure of the water-cooling oil cooling refrigeration system reaches 0.2-0.3 Mpa, the switch valve 6 on the second distribution pipeline is closed, and soap water is coated at each connection part of the filling device for leak detection. In this step, the refrigerant begins to annotate the back of annotating, should pay attention to the refrigerant condition of revealing, and when the pressure that fills the water-cooling oil cooling refrigerating system 7 of ammonia reaches 0.1~0.2Mpa or fills the water-cooling oil cooling refrigerating system 7 of freon and reaches 0.2~0.3Mpa, close the ooff valve 6 on the second distribution pipeline 5, stop to annotate and annotate, leak hunting to annotating the device, three kinds are commonly used to the leak hunting mode: detecting leakage of soapy water, detecting leakage of a handheld leak detector, and detecting leakage of phenolphthalein or litmus test paper. The soapy water leakage detection method is suitable for Freon refrigerants, the soapy water is coated on welding positions and connecting positions of filling devices during leakage detection, and leakage exists when bubbles emerge. The leakage detection of the phenolphthalein or litmus test paper is suitable for ammonia refrigerants, the phenolphthalein or litmus test paper dipped in clear water is used during leakage detection, the position close to the connecting part of a filling device and the welding part moves slowly, the length of the test paper and the position to be detected to be leaked is not more than 5cm, and if the phenolphthalein test paper is red or the litmus test paper is blue, the leakage is detected. The leak detection of the hand-held leak detector is suitable for both ammonia refrigerants and Freon refrigerants, and the leak detection is operated according to the instruction of the apparatus. And during leakage detection, careful observation is needed, a mark is made at a leakage position, leakage repairing is carried out after all detection is finished, and the refrigerant can be continuously filled after all leakage points are treated.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. A refrigerant filling method of a water-cooling oil cooling refrigeration system is characterized in that: a filling device mainly composed of a refrigerant container (1), a distribution station (2), a main pipeline (3), a first distribution pipeline (4) and a second distribution pipeline (5) is adopted to fill refrigerant into a water-cooling oil cooling refrigeration system (7), the water-cooling oil cooling refrigeration system (7) comprises a high-pressure liquid storage device (72), a throttle valve (73), a low-pressure circulating liquid storage device (74), a refrigerant pump (75), an evaporator (76) and a compressor (77), the high-pressure liquid storage device (72), the throttle valve (73), the low-pressure circulating liquid storage device (74) and the compressor (77) are connected in sequence through a connecting pipeline (78) to form a loop, the low-pressure circulating liquid storage device (74), the refrigerant pump (75) and the evaporator (76) are connected in sequence through the connecting pipeline (78) to form another loop, a pressure gauge (21) is arranged, the refrigerant container (1) and the distribution station (2) are connected through the main pipe (3), one end of the first distribution pipe (4) is connected to the distribution station (2), the other end of the first distribution pipe is connected to a connecting pipe (78) between a low-pressure circulation liquid accumulator (74) and an evaporator (76), one end of the second distribution pipe (5) is connected to the distribution station (2), the other end of the second distribution pipe is connected to a connecting pipe (78) between a high-pressure liquid accumulator (72) and a throttle valve (73), the main pipe (3), the first distribution pipe (4) and the second distribution pipe (5) are provided with a switch valve (6) at one end close to the distribution station (2), and the refrigerant filling method comprises the following steps:
s1: firstly, enabling all valves to be in a closed state, opening a refrigerant container (1), then slowly opening a throttle valve (73), a switch valve (6) on a main pipeline (3) and a switch valve (6) on a second distribution pipeline (5), and filling a refrigeration system into a high-pressure liquid storage device (72);
s2: when the internal pressure of the high-pressure accumulator (72) is close to or even with the internal pressure of the refrigerant container (1), closing or reducing the throttle valve (73), closing the switch valve (6) on the second distribution pipeline (5), opening the compressor (77) and reducing the internal pressure of the low-pressure circulation accumulator (74);
s3: opening a switch valve (6) on a first distribution pipeline (4) to fill a low-pressure circulation liquid accumulator (74), and closing the refrigerant container (1) when the refrigerant in the high-pressure liquid accumulator (72) and the low-pressure circulation liquid accumulator (74) reaches the designed height;
s4: fully opening a switch valve (6) on the first distribution pipeline (4), keeping a compressor (77) open, and pumping the refrigerant in the distribution station (2), the main pipeline (3) and the first distribution pipeline (4) into a low-pressure circulation accumulator (74);
s5: when the pressure gauge (21) is close to the value of 0 and the surface of the distribution station (2) stops frosting, closing the switch valve (6) on the compressor (77) and the main pipeline (3);
s6: -unloading the main pipe (3).
2. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 1, wherein: the main pipeline (3) is a rubber hose, and the first distribution pipeline (4) and the second distribution pipeline (5) are seamless steel pipes.
3. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 2, wherein: the distribution station (2) is connected with a standby pipeline (22), and the standby pipeline (22) is also provided with a switch valve (6).
4. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 1, wherein: the designed height of the refrigerant in the high pressure accumulator (72) is 70% of the total height in the step S3, and the designed height of the refrigerant in the low pressure circulation accumulator (74) is 25% or 40% or 60% or 65% of the total height.
5. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 4, wherein: the main pipeline (3) is connected to the distribution station (2) through a connecting flange, when the main pipeline (3) is connected with the distribution station (2), the outflow state of the refrigerant in the refrigerant container (1) is detected, and the detection comprises the following steps:
y1: a gap is reserved between the flange and the main pipeline (3);
y2: slightly opening a switch valve (6) on the main pipeline (3), and proving that the refrigerant in the refrigerant container (1) smoothly flows out when white mist escapes from the gap;
y3: and screwing the flange to tightly communicate the main pipeline (3) with the distribution station (2).
6. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 5, wherein: the refrigerant in the refrigerant container (1) is ammonia or freon.
7. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 6, wherein: step S1 further comprises detecting leakage of the refrigerant, when the refrigerant in the refrigerant container (1) is ammonia, and when the pressure of the water-cooling oil cooling refrigeration system (7) reaches 0.1-0.2 Mpa, closing a switch valve (6) on the second distribution pipeline (5), and detecting leakage by enabling phenolphthalein or litmus test paper to be close to each connection part of the filling device; when the refrigerant in the refrigerant container (1) is Freon, when the pressure of the water-cooling oil cooling refrigeration system (7) reaches 0.2-0.3 Mpa, the switch valve (6) on the second distribution pipeline (5) is closed, and soap water is coated on each connection part of the filling device for leak detection.
8. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 7, wherein: the suction pressure of the compressor (77) in the step S2 is not lower than 0.15 MPa.
9. The method of charging refrigerant in a water-cooled oil cooling refrigeration system as set forth in claim 8, wherein: the refrigerant pump (75) is also turned on in step S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094897.3A CN109140850B (en) | 2018-09-19 | 2018-09-19 | Refrigerant filling method of water-cooling oil cooling refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094897.3A CN109140850B (en) | 2018-09-19 | 2018-09-19 | Refrigerant filling method of water-cooling oil cooling refrigeration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109140850A CN109140850A (en) | 2019-01-04 |
| CN109140850B true CN109140850B (en) | 2020-07-10 |
Family
ID=64815221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811094897.3A Active CN109140850B (en) | 2018-09-19 | 2018-09-19 | Refrigerant filling method of water-cooling oil cooling refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109140850B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986082A (en) * | 1988-12-22 | 1991-01-22 | Sanden Corporation | Refrigerant charging system in which a refrigerant is freshened and smoothly charged into a storage container |
| CN2589299Y (en) * | 2002-12-16 | 2003-12-03 | 金景善 | Coolant recovering and charging machine |
| JP2004245466A (en) * | 2003-02-12 | 2004-09-02 | Sanyo Electric Co Ltd | Heat pump hot water supply device, refrigerant communication pipe connecting method at site and refrigerant oil filling method in the same |
| CN101307971A (en) * | 2008-04-10 | 2008-11-19 | 上海理工大学 | Determination method for frequency converting air-conditioner liquid reservoir capacity and refrigerant charging amount |
| CN201753994U (en) * | 2010-08-02 | 2011-03-02 | 李洲 | Integrated heat exchange system |
| CN105004116A (en) * | 2015-07-09 | 2015-10-28 | 广东美的暖通设备有限公司 | Outdoor unit of air conditioner and refrigerant filling control method of air conditioner |
-
2018
- 2018-09-19 CN CN201811094897.3A patent/CN109140850B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986082A (en) * | 1988-12-22 | 1991-01-22 | Sanden Corporation | Refrigerant charging system in which a refrigerant is freshened and smoothly charged into a storage container |
| CN2589299Y (en) * | 2002-12-16 | 2003-12-03 | 金景善 | Coolant recovering and charging machine |
| JP2004245466A (en) * | 2003-02-12 | 2004-09-02 | Sanyo Electric Co Ltd | Heat pump hot water supply device, refrigerant communication pipe connecting method at site and refrigerant oil filling method in the same |
| CN101307971A (en) * | 2008-04-10 | 2008-11-19 | 上海理工大学 | Determination method for frequency converting air-conditioner liquid reservoir capacity and refrigerant charging amount |
| CN201753994U (en) * | 2010-08-02 | 2011-03-02 | 李洲 | Integrated heat exchange system |
| CN105004116A (en) * | 2015-07-09 | 2015-10-28 | 广东美的暖通设备有限公司 | Outdoor unit of air conditioner and refrigerant filling control method of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109140850A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10480715B2 (en) | Gas supply device and method for starting operation of gas supply device | |
| CN103486785B (en) | The method for controlling oil return of frequency converting air-conditioner compressor and device thereof | |
| CN104675374A (en) | Unconventional CO2 fracturing site operation technology | |
| CN109140849B (en) | Refrigerant filling method of thermosiphon oil cooling refrigeration system | |
| US20150354879A1 (en) | Method of reducing liquid flooding in a transport refrigeration unit | |
| CN113203228B (en) | Refrigerant adjusting device, refrigerant recovery equipment and control method of refrigerant recovery equipment | |
| WO2019009117A1 (en) | Refrigerant recovery apparatus | |
| CN111520941A (en) | Refrigerant supplementing system and method | |
| CN109140850B (en) | Refrigerant filling method of water-cooling oil cooling refrigeration system | |
| CN215983383U (en) | Refrigerant charging device and refrigeration equipment | |
| CN104389763A (en) | Air conditioner oiling device | |
| CN110442160B (en) | Air pressure stabilizing device for closed type circulating cooling system | |
| CN102853591A (en) | Structural form of small-volume low-pressure circulating barrel structure in application of liquid pump in high-rise refrigeration air conditioner system set | |
| CN207831739U (en) | A kind of device for reducing refrigeration and compressor exhaust temperature in heat pump unit | |
| CN213578185U (en) | Refrigeration system and unit | |
| CN112614621B (en) | Superconducting cable refrigerating system | |
| CN220750551U (en) | System for accelerating reverse filling of liquid oxygen into oxygenerator | |
| CN217330288U (en) | Parallel refrigerant water supply device | |
| CN112344574B (en) | Refrigerating system, unit and method for adjusting lubricating oil quantity of refrigerating system | |
| CN110671236A (en) | Fuel steam generator | |
| CN221301665U (en) | Refrigerant recovery system for refrigeration equipment test | |
| US20210164618A1 (en) | Method for controlling compression system, compression system, and hydrogen station | |
| CN221005535U (en) | Liquid supply structure of bucket pump unit of refrigerating system | |
| CN110836548B (en) | Oil supplementing device, screw type water chilling unit system and oil return method | |
| CN219063799U (en) | High-low pressure level refrigeration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |