CN114669086B - Oil storage device with purification function and compressor system comprising same - Google Patents
Oil storage device with purification function and compressor system comprising same Download PDFInfo
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- CN114669086B CN114669086B CN202210343574.3A CN202210343574A CN114669086B CN 114669086 B CN114669086 B CN 114669086B CN 202210343574 A CN202210343574 A CN 202210343574A CN 114669086 B CN114669086 B CN 114669086B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/005—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion by thermal diffusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0031—Degasification of liquids by filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0052—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
Abstract
The invention provides an oil storage device with a purification function and a compressor system comprising the same. The oil storage device with purification function includes: the oil tank is arranged in the tank body, a cavity above the oil tank forms an airflow channel, a heating device is arranged in the oil tank and used for heating oil in the oil tank to evaporate and separate condensing agents mixed in the oil, the condensing agents separated by evaporation flow into the airflow channel, a separating device is arranged in the airflow channel and used for forming multi-stage separation on the gas condensing agents separated by evaporation, an oil inlet and an oil return port are formed in the tank body and are communicated with an oil tank of the compressor, an exhaust port is further formed in the tank body and located above the separating device and is used for being communicated with an air suction port of the compressor. The invention improves the purity of the lubricating oil and solves the problem of insufficient purity of the lubricating oil caused by the blending of the refrigerant when the unit is in long-term operation, shutdown or failure.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to an oil storage device with a purification function and a compressor system comprising the same.
Background
In a refrigeration system, when a large centrifugal water chiller unit stops working for a long time or fails, a refrigerant is easily blended into lubricating oil, so that the purity of the lubricating oil is insufficient, and oil leakage is caused in severe cases, so that the oil shortage of a compressor is caused; when the compressor is started again, the refrigerant evaporates from the lubricating oil to cause 'cavitation' effect, so that the unit generates vibration, noise, abnormal sound and the like, and the service life of the compressor is influenced.
Disclosure of Invention
In view of this, the present invention provides an oil storage device with a purification function and a compressor system including the same, which are at least used for solving the technical problem in the prior art that the refrigerant is melted to cause insufficient purity of the refrigeration oil, and specifically:
in a first aspect, the present invention provides an oil storage device having a purification function for purifying lubricating oil for a compressor, comprising: a tank body, wherein an oil pool is arranged in the tank body, a cavity above the oil pool in the tank body forms an airflow channel,
the oil pool is internally provided with a heating device which is used for heating the oil liquid in the oil pool to evaporate and separate condensing agents mixed in the oil liquid, the condensing agents separated by evaporation flow into the airflow channel,
a separation device is arranged in the airflow channel and is used for forming multi-stage separation on the gas condensing agent separated by evaporation,
the tank body is provided with an oil inlet and an oil return port which are used for being communicated with an oil tank of the compressor,
the tank body is further provided with an exhaust port, the exhaust port is located above the separating device, and the exhaust port is used for being communicated with an air suction port of the compressor.
Further optionally, the oil inlet is located above the oil sump,
the separation device comprises a primary separator, the primary separator is a centrifugal separator, the primary separator corresponds to the oil inlet, and oil flowing into the oil inlet flows downwards into the oil pool after passing through the primary separator.
Further optionally, the separation device further comprises a secondary separator, the secondary separator is a filter screen separator, and the secondary separator is arranged between the primary separator and the oil sump.
Further optionally, the separation device further comprises a third-stage separator, the third-stage separator is a gravity settling separator, and the third-stage separator is located on a downstream side of the first-stage separator in the flowing direction of the gas condensing agent.
Further optionally, the separation device further comprises a fourth stage separator, the fourth stage separator being a gas-liquid separator, the fourth stage separator being located on a downstream side of the third stage separator in a flow direction of the gas refrigerant.
Further optionally, the separation device further comprises a fifth stage separator, the fifth stage separator being a sieve separator, the fifth stage separator being located on a downstream side of the fourth stage separator in a flow direction of the gas refrigerant.
In a further alternative,
an oil return pump is arranged in the oil pool and used for pumping oil in the oil pool out of the oil return port,
the oil inlet is connected with the oil return port through a circulation loop, the circulation pipeline comprises a circulation control valve, and the circulation control valve is used for controlling the opening and closing of the circulation loop.
Further optionally, an oil discharge port is arranged at the bottom of the oil pool, and the oil discharge port is used for discharging oil in the oil pool.
Further optionally, a safety valve is disposed on the top of the tank body, and the safety valve is connected to the gas flow channel and used for controlling gas discharge in the gas flow channel.
In a second aspect, the invention provides a compressor system, comprising a compressor and the oil storage device with purification function,
the oil tank of the compressor is provided with a lubricating oil outlet and a lubricating oil inlet, the lubricating oil outlet is connected with the oil inlet on the tank body, a first control valve is arranged on the connecting pipeline,
the lubricating oil inlet is connected with the oil return port, and a second control valve is arranged on the connecting pipeline;
the suction port of the compressor is communicated with the exhaust port.
The invention separates the refrigerant mixed in the lubricating oil by separating and purifying the lubricating oil of the compressor, improves the purity of the lubricating oil, solves the problem of insufficient purity of the lubricating oil caused by the blending of the refrigerant when the unit is in long-term operation, shutdown or failure, and avoids the generation of vibration, noise, abnormal sound and the like of the unit caused by the cavitation effect caused by the evaporation of the refrigerant from the lubricating oil when the unit is restarted for operation.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic structural diagram of an oil storage device with a purification function according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a compressor system according to an embodiment of the present invention.
In the figure:
1. a tank body; 11. an oil sump; 111. a heating device; 112. an oil return port; 113. an oil return pump; 114. an oil discharge port; 115. an observation window; 116. an oil inlet; 12. an air flow channel; 121. an exhaust port; 122. a safety valve; 131. a first stage separator; 132. a secondary separator; 133. a third stage separator; 134. a fourth stage separator; 135. a five-stage separator; 14. a circulation loop; 141. a circulation control valve; 151. a first control valve; 152. a second control valve; 2. a compressor; 21. an oil tank; 211. an outlet control valve; 212. an oil inlet control valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or system comprising the element.
The invention separates the refrigerant mixed in the lubricating oil by separating and purifying the lubricating oil of the compressor, improves the purity of the lubricating oil, solves the problem of insufficient purity of the lubricating oil caused by the fusion of the refrigerant when the unit is in long-term operation, shutdown or failure, and avoids the generation of vibration, noise, abnormal sound and the like of the unit caused by the cavitation effect caused by the evaporation of the refrigerant from the lubricating oil when the unit is restarted for operation. The invention is described in detail below with reference to specific examples:
as shown in fig. 1 and 2, the present invention provides an oil storage device with a purification function for purifying lubricating oil of a compressor 2, comprising: the oil tank 11 is arranged in the tank body 1, the oil tank 11 is used for storing oil, a cavity above the oil tank 11 in the tank body 1 forms an airflow channel 12, the airflow channel 12 is used for circulating separated gas refrigerants, and the refrigerants are discharged through the airflow channel 12.
The oil pool 11 is provided with a heating device 111, preferably an electric heating device 111, the heating device 111 is used for heating the oil liquid in the oil pool 11, so that the condensing agent mixed in the oil liquid is evaporated and separated, the evaporated and separated gas condensing agent rises and flows into the airflow channel 12, and the gas cooling medium flows from bottom to top in the airflow channel 12.
The gas flow channel 12 is internally provided with a separating device for performing multi-stage separation and purification on the evaporated and separated gas condensing agent, the tank body 1 is also provided with an exhaust port 121, the exhaust port 121 is positioned above the separating device, and the exhaust port 121 in the oil pool 11 is used for communicating with an air suction port of the compressor 2, so that the purified condenser flows into the air suction port of the compressor. Preferably, the exhaust port 121 may be connected to a vacuum pump of the compressor, and may also recover the refrigerant.
The tank body 1 is provided with an oil inlet 116 and an oil return opening 112, and the oil inlet 116 and the oil return opening 112 are used for being communicated with an oil tank 21 of the compressor 2, so that lubricating oil in the oil tank of the compressor 2 can flow into the oil storage device, and flow back into the compressor 2 after purification is completed in the oil storage device.
Specifically, the oil inlet 116 is located above the oil sump 11, the separation device includes a first-stage separator 131, the first-stage separator 131 is a centrifugal separator, the first-stage separator 131 corresponds to the oil inlet 116, and oil liquid of the oil flowing in from the oil inlet 116 after passing through the first-stage separator 131 flows downward into the oil sump 11. Preferably, the first-stage separator 131 is an inner and outer two-layer cylindrical structure, a filter screen is arranged between the two layers, the first-stage separator 131 is rotatably arranged in the airflow channel 12, and the separation is mainly realized by adopting a centrifugal separation working principle: impact, centrifugal or combined mechanical separation, after oil enters from the oil inlet 116, the oil and the liquid are subjected to rotary separation on the outer wall of the primary separator 131, and due to different densities of the oil and the liquid, the oil and the liquid are subjected to different centrifugal forces to realize separation; the liquid is finally collected at the bottom and passes through a bottom filter screen, and the falling liquid enters an oil pool 11; and the gas enters the inner-layer cavity through the middle filter screen and is collected towards the top to complete the first gas-liquid separation of the oil.
The separating device further comprises a second-stage separator 132, the second-stage separator 132 is a filter screen separator, and the second-stage separator 132 is arranged below the first-stage separator 131, that is, the second-stage separator 132 is located between the first-stage separator 131 and the oil sump 11. The oil falling from the first separator 131 is separated into gas and liquid again by the second separator 132. Preferably, the filter screen mainly adopts special filler to realize the trapping and adsorption of the liquid; the filter core commonly used at present includes metal wire net filter screen and glass fiber filter screen etc. can come separation efficiency through improving the filter screen precision. The separated gas refrigerant rises to the top of the airflow channel 12 and is collected, and the oil liquid falls into the oil pool 11.
The separation device further comprises a third stage separator 133, the third stage separator 133 being a gravity settling separator, the third stage separator 133 being arranged above the first stage separator 131, i.e. the third stage separator 133 is located downstream of the first stage separator 131 in the flow direction of the gas condensate. The gas refrigerant separated by the first-stage separator 131 carries a large amount of oil mist and liquid drops, and rises into the third-stage separator 133 to be subjected to gas-liquid separation again, the gravity settling separator comprises a baffle plate, the baffle plate is positioned above a middle circulation cavity of the first-stage separator 131 and used for blocking the air flow, so that the air flow bypasses the baffle plate and then flows upwards, and the baffle plate can block a part of oil mist and oil drop gas refrigerant from continuing to rise to perform gas-liquid separation operation again.
The separating means further comprises a fourth stage separator 134, the fourth stage separator 134 being a gas-liquid separator, the fourth stage separator 134 being located above the third stage separator 133, i.e. the fourth stage separator 134 being located downstream of the third stage separator 133 in the flow direction of the gas refrigerant. The four-stage separator 134 includes a plurality of blocking plates therein to form a bent flow passage, which extends the flow path of the air flow, and the oil mist and the oil droplets contact with the blocking plates and are adsorbed on the blocking plates to form a secondary gas-liquid separation. Preferably, the blocking plate is arranged in a downward inclined mode, and downward flow of oil is facilitated.
Further, the separation device further includes a five-stage separator 135, the five-stage separator 135 is a screen separator, and the five-stage separator 135 is located above the four-stage separator 134, that is, the five-stage separator 135 is located on the downstream side of the four-stage separator 134 in the flow direction of the gas refrigerant. Preferably, the filtering precision of the five-stage separator 135 is higher than that of the filter screen of the two-stage separator 132, so that fine filtration is realized, the separation precision is further improved, the complete separation of the lubricating oil and the refrigerant is realized, and the separation precision can reach 99.99%. The purified refrigerant gas is connected with the air suction port of the compressor 2 through the top part, is sucked into the air suction port of the compressor 2 and participates in the system refrigeration cycle.
Preferably, a return pump 113 is arranged in the oil pool 11, the return pump 113 is used for pumping oil in the oil pool 11 out from the return port 112, the oil inlet 116 and the return port 112 are connected through the circulation loop 14, the circulation pipeline includes a circulation control valve 141, and the circulation control valve 141 is used for controlling the opening and closing of the circulation loop 14. The oil in the oil pool 11 can be circulated through the circulation loop 14, so that multiple separation is realized, and the purity of the oil is improved.
Further, an observation window 115 is disposed on a side wall of the oil pool 11 for observing a liquid level of the oil in the oil pool 11. The bottom of the oil pool 11 is provided with an oil outlet 114, and the oil outlet 114 is used for discharging the oil in the oil pool 11, namely, when the liquid level in the oil pool 11 is observed to be too high through the observation window 115, part of the oil can be discharged through the oil outlet 114.
Preferably, a safety valve 122 is provided at the top of the tank 1, and the safety valve 122 is connected to the gas flow path 12 for controlling the discharge of the gas in the gas flow path 12. The relief valve 122 is a pressure regulating valve, and when the refrigerant gas is accumulated to a certain pressure, the valve is opened to release the gas, so as to ensure that the separation can be normally performed.
In the optimal embodiment, the separators at all stages are arranged at the same time, so that the purity of oil and refrigerant is improved through multi-stage separation, and the purpose of gas-liquid separation can be realized by selecting any one or more separators in other embodiments as well as easily understood.
The invention also provides a compressor system, which comprises a compressor 2 and the oil storage device with the purification function, wherein a lubricating oil outlet and a lubricating oil inlet are arranged on an oil tank 21 of the compressor 2, the lubricating oil outlet is connected with the oil inlet 116 on the tank body 1, a first control valve 151 is arranged on a connecting pipeline, the lubricating oil inlet is connected with the oil return port 112, a second control valve 152 is arranged on the connecting pipeline, and an air suction port of the compressor 2 is communicated with the air exhaust port 121. Preferably, a flow meter is arranged on a connecting pipeline with the oil tank 21, so that quantitative filling, recovery and purification of lubricating oil are realized.
Further, as shown in fig. 2, in the present embodiment, a part of the pipeline for oil outlet and oil return between the oil tank 21 and the tank body 1 is the same pipeline, that is, the same pipeline includes a filling pipe, the lubricating oil outlet and the lubricating oil inlet of the oil tank 21 are both connected to the filling pipe through the pipeline, and similarly, the oil inlet 116 and the oil return port 112 of the tank body 1 are also respectively connected to the filling pipe through the pipeline, so that the usage amount of the pipeline can be reduced, and the overall structure of the system can be simplified. Also, a first control valve 151 is provided on a connecting pipe between the oil inlet 116 and the main line, and a second control valve 152 is provided on a connecting pipe between the port 112 and the filler pipe. An oil outlet control valve 211 is disposed on a connecting pipe between the lubricant outlet of the oil tank 21 and the main oil pipe, and an oil inlet control valve 212 is disposed on a connecting pipe between the lubricant inlet of the oil tank 21 and the oil filling pipe.
When the oil in the compressor 2 needs to be purified, the first control valve 151 and the oil outlet control valve 211 are opened, the second control valve 152 and the oil inlet control valve 212 are closed, and the lubricating oil is pumped into the tank 1 for treatment by the oil pump in the oil tank 21. Then, the first control valve 151 and the oil outlet control valve 211 are closed, and the circulation control valve 141 and the scavenge pump 113 are opened to perform a gas-liquid separation operation. After the operation is completed, the circulation control valve 141 is closed, the second control valve 152 and the oil feed control valve 212 are opened, and the lubricating oil in the oil reservoir 11 is pumped into the oil tank 21 by the oil return pump 113.
Preferably, when the lubricant outlet of the oil tank 21 is connected to the oil inlet 116 of the tank body 1 through an independent pipeline, and the lubricant inlet of the oil tank 21 is connected to the oil return port 112 of the tank body 1 through an independent pipeline, a control valve is disposed on each of the two connecting pipelines.
When the purity of the lubricating oil in the oil tank 21 is insufficient, the lubricating oil can be guided into the tank body 1 for purification and classification through an oil pump arranged in the oil tank 21, refrigerant gas is discharged from the top of the device, the purified lubricating oil is deposited in the bottom oil pool 11 and returns to the oil tank 21 through an oil return pump 113 arranged at the bottom of the device, meanwhile, the oil storage device has a certain oil storage function, and when the system runs, the compressor 2 is lack of oil or runs out of oil, and oil can be supplemented through the oil storage device to meet the requirement of starting; when the lubricating oil in the refrigerant which runs into the unit by effective means returns to the oil tank, the redundant lubricating oil in the oil tank can be guided into the oil storage device. Therefore, the oil storage device has the functions of purifying and purifying lubricating oil and meeting the requirements of dynamic oil supplement and oil return storage of an oil way system.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the disclosure is not limited to the precise construction, arrangements, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (8)
1. A compressor system is characterized by comprising a compressor and an oil storage device with a purification function, wherein the oil storage device is used for purifying lubricating oil of the compressor,
the oil storage device with a purification function includes: the tank body is internally provided with an oil pool, a cavity above the oil pool in the tank body forms an airflow channel,
the oil tank is internally provided with a heating device which is used for heating the oil in the oil tank to evaporate and separate condensing agents mixed in the oil, the condensing agents separated by evaporation flow into the airflow channel, the bottom of the oil tank is provided with an oil discharge port which is used for discharging the oil in the oil tank,
a separation device is arranged in the airflow channel and is used for forming multi-stage separation on the gas condensing agent separated by evaporation,
the tank body is provided with an oil inlet and an oil return port which are used for being communicated with an oil tank of the compressor,
the tank body is also provided with an exhaust port, the exhaust port is positioned above the separation device, and the exhaust port is used for being communicated with an air suction port of the compressor;
a lubricating oil outlet and a lubricating oil inlet are arranged on an oil tank of the compressor, the lubricating oil outlet is connected with an oil inlet on the tank body, a first control valve is arranged on a connecting pipeline, the lubricating oil inlet is connected with the oil return port, and a second control valve is arranged on the connecting pipeline;
the suction port of the compressor is communicated with the exhaust port.
2. The compressor system of claim 1, wherein the oil inlet is located above the oil sump,
the separation device comprises a primary separator, the primary separator is a centrifugal separator, the primary separator corresponds to the oil inlet, and oil flowing into the oil inlet flows downwards into the oil pool after passing through the primary separator.
3. The compressor system of claim 2, wherein the separation device further comprises a secondary separator, the secondary separator being a screen separator, the secondary separator being disposed at a location between the primary separator and the oil sump.
4. The compressor system of claim 2, wherein the separation device further comprises a tertiary separator, the tertiary separator being a gravity separator, the tertiary separator being located on a downstream side of the primary separator in a flow direction of the gas refrigerant.
5. The compressor system of claim 4, wherein the separation device further comprises a fourth stage separator, the fourth stage separator being a gas-liquid separator, the fourth stage separator being located on a downstream side of the third stage separator in a flow direction of the gas refrigerant.
6. The compressor system of claim 5, wherein the separation device further comprises a five-stage separator that is a screen separator, the five-stage separator being located on a downstream side of the four-stage separator in a flow direction of the gas refrigerant.
7. The compressor system of any one of claims 2-6,
an oil return pump is arranged in the oil pool and used for pumping oil in the oil pool out of the oil return port,
the oil inlet is connected with the oil return port through a circulation loop, the circulation loop comprises a circulation control valve, and the circulation control valve is used for controlling the opening and closing of the circulation loop.
8. The compressor system of claim 1, wherein a relief valve is disposed at a top of the tank, the relief valve being connected to the gas flow passage for controlling a discharge of gas from the gas flow passage.
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| CN202210343574.3A CN114669086B (en) | 2022-03-31 | 2022-03-31 | Oil storage device with purification function and compressor system comprising same |
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| CN202210343574.3A CN114669086B (en) | 2022-03-31 | 2022-03-31 | Oil storage device with purification function and compressor system comprising same |
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| CN114669086B true CN114669086B (en) | 2023-02-24 |
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