CN217423671U - Two parallel refrigeration compressor group with oil cooling subassembly - Google Patents
Two parallel refrigeration compressor group with oil cooling subassembly Download PDFInfo
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- CN217423671U CN217423671U CN202221371682.3U CN202221371682U CN217423671U CN 217423671 U CN217423671 U CN 217423671U CN 202221371682 U CN202221371682 U CN 202221371682U CN 217423671 U CN217423671 U CN 217423671U
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Abstract
The utility model provides a two parallel refrigeration compressor units with oil cooling subassembly, including frame (1), compressor (2), switch board (3), return-air discharge (4), reservoir (5), inhale filter (6), oil separator (7), exhaust discharge (9), return-air heat exchange component and oil cooling subassembly, oil cooling subassembly includes oil cleaner (8), air-cooled oil cooler (10), fuel feeding collector (14) and oil feeder (15), the bottom export of oil separator (7) is connected to the lower extreme import department of air-cooled oil cooler (10) through going out oil pipe way behind oil cleaner (8), the upper end export of air-cooled oil cooler (10) passes through oil pipe entering fuel feeding collector (14), the oil return opening of compressor (2) is connected with fuel feeding collector (14) through oil feeder (15) respectively. The device adopts oil cooling subassembly to solve the too high difficult problem of compressor oil return temperature, has realized the real-time on-line monitoring of oil return temperature.
Description
Technical Field
The utility model relates to a freezer refrigerating unit technical field, concretely relates to two parallel refrigeration compressor units with oil cooling subassembly.
Background
The parallel type refrigeration compressor set is a refrigeration compressor set which is formed by installing two or more compressors in parallel on the same frame. Compared with a single-compressor refrigerating unit, the parallel-connection type refrigerating compressor can flexibly and accurately design the parallel-connection type refrigerating unit which is suitable for special requirements of users by selecting the same or different number of compressors and combining the compressors which are good, and further the phenomenon that refrigerating capacity of the unit is excessive or insufficient is avoided. Therefore, the parallel refrigeration compressor set is widely applied to large-scale cold storages to meet the cold using requirements of different cold storages.
The prior parallel refrigeration compressor set is provided with a common air suction and exhaust collecting pipe, so that only one oil separator, a gas-liquid separator, a liquid reservoir and an oil filter are needed in the parallel refrigeration compressor set, and the common components simultaneously serve the parallel refrigeration compressor set to respectively complete corresponding functions and actions. For example, the high-temperature and high-pressure oil-gas mixed medium discharged from the exhaust port of the parallel refrigeration compressor unit enters the oil separator through the exhaust manifold, then flows back to the inside of the parallel refrigeration compressor unit through the oil supply device, and forms a cycle. If the temperature of the lubricating oil entering the parallel type refrigeration compressor set from the oil supply device is higher after passing through the oil separator, the exhaust temperature of the parallel type refrigeration compressor set is easily overhigh, and the refrigeration effect of the whole refrigeration house system is seriously influenced.
In view of this, the oil return subassembly of current parallel refrigeration compressor unit has the too high phenomenon of oil temperature, is the technical problem that this technical field awaits the solution urgently, needs a two parallel refrigeration compressor units that have oil cooling subassembly urgently, guarantees that the lubricating oil temperature is in the set value scope in the parallel refrigeration compressor unit.
SUMMERY OF THE UTILITY MODEL
The utility model is to above-mentioned technical defect, in order to solve the too high technical problem of lubricating oil temperature among the current parallel refrigeration compressor unit, provided a two parallel refrigeration compressor units with oil cooling subassembly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a two-parallel refrigeration compressor unit with an oil cooling assembly comprises a rack, compressors, a control cabinet, an air return gas collecting pipe, a liquid storage device, an air suction filter, an oil separator, an exhaust gas collecting pipe, an air return heat exchange assembly and an oil cooling assembly, wherein the two compressors are arranged at the top of the rack, the control cabinet is vertically fixed in front of the rack, the air return gas collecting pipe is fixed at the top of the rack through anchor bolts of the air return gas collecting pipe and is arranged at the back of the two compressors, the top of the air return gas collecting pipe is fixed with an air return pipe and is respectively connected to air inlets of the two compressors through right-angle stop valves, the liquid storage device is fixed on a base of the rack through anchor bolts at the bottom of the liquid storage device and is arranged under the two compressors, the top of the liquid storage device is provided with a pipeline and is connected to the bottom inlet of the air return gas collecting pipe through the air suction filter, and the oil separator is arranged at the right side of the rack through bolts at the bottom of the oil separator, the inlet of the oil separator is connected with the outlet end of the exhaust gas collecting pipe, the exhaust ports of the two compressors are connected to the inlet of the exhaust gas collecting pipe through exhaust pipelines respectively, the outlet at the bottom of the oil separator is connected with the inlet of the oil cooling assembly, and the outlet of the oil cooling assembly is connected to the oil return ports of the two compressors through oil pipes respectively.
The oil cooling assembly comprises an oil filter, an air-cooled oil cooler, an oil supply collecting pipe and an oil feeder, wherein a bottom outlet of the oil separator is connected to a lower end inlet of the air-cooled oil cooler after passing through the oil filter through an oil outlet pipeline, an upper end outlet of the air-cooled oil cooler enters the oil supply collecting pipe through an oil pipe, and oil return ports of the two compressors are connected with the oil supply collecting pipe through the oil feeder respectively.
A straight-through electromagnetic valve is arranged at an oil pipe between the inlet at the lower end and the outlet at the upper end of the air-cooled oil cooler.
The outlet pipeline of the oil filter is provided with a temperature sensor, and a temperature signal of the temperature sensor is connected to a certain input end of a Programmable Logic Controller (PLC) of the control cabinet through a data line, so that the real-time online monitoring of the return oil temperatures of the two compressors is realized.
The starting and stopping of the straight-through electromagnetic valve and the air-cooled oil cooler are controlled by a Programmable Logic Controller (PLC) of the control cabinet.
The air return heat exchange assembly comprises an air return collecting pipe A, an air return collecting pipe B and an economizer, wherein the air return collecting pipe A and the air return collecting pipe B are vertically arranged on the rack and are positioned below the two compressors, the economizer is fixed on the rack and is positioned behind the control cabinet, the air inlet end of the air return collecting pipe B is connected to an air return pipeline of the refrigeration house, the lower end inlets of the two economizers are respectively connected with the air return collecting pipe B through pipelines, the upper end inlets of the two economizers are respectively connected to exhaust by-passes of the two compressors, the upper end outlets of the two economizers are respectively connected to an air return collecting pipe A through pipelines, and the outlet of the air return collecting pipe A is connected with the inlet of the air return collecting pipe.
The frame is made of C-shaped hot-rolled common channel steel and is formed in a welding mode, the structural strength of the frame is calculated according to the models, the volume and the weight parameters of the two compressors, and the model of the C-shaped hot-rolled common channel steel is determined by the calculated structural strength of the frame and the safety redundancy coefficient.
Compared with the prior art, the two parallel refrigeration compressor units with the oil cooling assemblies provided by the utility model have compact overall structure and high integration level, and the number of the refrigeration compressors can be expanded or reduced according to the actual cold demand of the refrigeration house; on the other hand, a temperature sensor is arranged on an outlet pipeline of the oil filter, real-time online monitoring is carried out on the oil return temperature of the compressors through a programmable logic controller PLC of the control cabinet, when the programmable logic controller PLC of the control cabinet monitors that the oil temperature of the outlet pipeline of the oil filter is higher than the highest value of a set range, the programmable logic controller PLC sends signals to the through electromagnetic valve and the air-cooled oil cooler respectively, the through electromagnetic valve is closed, the air-cooled oil cooler is started, at the same time, the lubricating oil passes through the oil filter and then enters the air-cooled oil cooler, the lubricating oil is cooled by the air-cooled oil cooler, the cooled lubricating oil enters an oil supply collecting pipe through an upper end outlet of the air-cooled oil cooler and then enters oil return ports of the two compressors through the oil feeders respectively, and cooling of the lubricating oil is achieved; if the PLC of the control cabinet monitors that the oil temperature of the outlet pipeline of the oil filter is lower than the highest value of the set range, the PLC respectively sends signals to the through electromagnetic valve and the air-cooled oil cooler, and simultaneously the through electromagnetic valve is opened and the air-cooled oil cooler is stopped, and at the moment, lubricating oil passes through the oil filter and then directly enters the oil supply header through the through electromagnetic valve.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the removing frame of the present invention;
FIG. 3 is a schematic view of the oil cooling assembly of the present invention;
fig. 4 is a rear view of fig. 1 of the present invention.
Labeled as: 1: a frame; 2: a compressor; 3: a control cabinet; 4: a gas return and collection pipe; 5: a reservoir; 6: an air intake filter; 7: an oil separator; 8: an oil filter; 9: an exhaust gas collecting pipe; 10: an air-cooled oil cooler; 11: a gas return collecting pipe A; 12: a return air header pipe B; 13: an economizer; 14: an oil supply header; 15: an oil feeder.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
Referring to the attached drawings 1-4, a two-parallel refrigeration compressor unit with an oil cooling assembly comprises a frame 1, compressors 2, a control cabinet 3, an air return gas collecting pipe 4, a liquid storage device 5, an air suction filter 6, an oil separator 7, an exhaust gas collecting pipe 9, an air return heat exchange assembly and an oil cooling assembly, wherein the two compressors 2 are installed at the top of the frame 1, the control cabinet 3 is vertically fixed at the front of the frame 1, the air return gas collecting pipe 4 is fixed at the top of the frame 1 through anchor bolts of the air return gas collecting pipe 4 and is arranged at the back of the two compressors 2, the top of the air return gas collecting pipe 4 is fixed with an air return pipe and is respectively connected to air inlets of the two compressors 2 through right-angle stop valves, the liquid storage device 5 is fixed on a base of the frame 1 through anchor bolts at the bottom of the liquid storage device 5 and is arranged under the two compressors 2, the top of the liquid storage device 5 is provided with a pipeline and is connected to an inlet at the bottom of the air return pipe 4 through the air suction filter 6, the oil separator 7 is mounted on the right side of the frame 1 through a bolt at the bottom of the oil separator 7, an inlet of the oil separator 7 is connected with an outlet end of the exhaust gas collecting pipe 9, exhaust ports of the two compressors 2 are connected with inlets of the exhaust gas collecting pipe 9 through exhaust pipelines respectively, a bottom outlet of the oil separator 7 is connected with an inlet of the oil cooling assembly, and an outlet of the oil cooling assembly is connected with oil return ports of the two compressors 2 through oil pipes respectively.
Preferably, the oil cooling assembly comprises an oil filter 8, an air-cooled oil cooler 10, an oil supply header 14 and an oil feeder 15, wherein a bottom outlet of the oil separator 7 is connected to a lower end inlet of the air-cooled oil cooler 10 after passing through the oil filter 8 through an oil outlet pipeline, an upper end outlet of the air-cooled oil cooler 10 enters the oil supply header 14 through an oil pipe, and oil return ports of the two compressors 2 are respectively connected with the oil supply header 14 through the oil feeder 15.
Preferably, a straight-through solenoid valve is arranged at an oil pipe between a lower end inlet and an upper end outlet of the air-cooled oil cooler 10.
Preferably, a temperature sensor is installed on an outlet pipeline of the oil filter 8, a temperature signal of the temperature sensor is connected to one input end of a programmable logic controller PLC of the control cabinet 3 through a data line, and real-time online monitoring of oil return temperatures of the two compressors 2 is achieved.
Preferably, the on-off control of the straight-through solenoid valve and the air-cooled oil cooler 10 is controlled by a programmable logic controller PLC of the control cabinet 3.
The utility model provides a two parallel refrigeration compressor units with oil cooling subassembly, the outlet pipeline of oil filter 8 has installed temperature sensor, carry out real-time on-line monitoring to the oil return temperature of compressor 2 through the programmable logic controller PLC of switch board 3, when the programmable logic controller PLC of switch board 3 monitors that the oil temperature of the outlet pipeline of oil filter 8 is higher than the highest value of settlement scope, programmable logic controller PLC sends the signal to through solenoid valve and air-cooled oil cooler 10 respectively, close through solenoid valve simultaneously, start air-cooled oil cooler 10, lubricating oil enters air-cooled oil cooler 10 after passing through oil filter 8 at this moment, cool lubricating oil by air-cooled oil cooler 10, lubricating oil after the cooling passes through the upper end export of air-cooled oil cooler 10 and gets into in fuel feeding manifold 14, then get into the oil return opening of two compressors 2 through fuel feeder 15 respectively, cooling of the lubricating oil is realized; if the PLC of the control cabinet 3 monitors that the oil temperature of the outlet pipeline of the oil filter 8 is lower than the highest value of the set range, the PLC respectively sends signals to the through electromagnetic valve and the air-cooled oil cooler 10, and simultaneously opens the through electromagnetic valve and stops the air-cooled oil cooler 10, and at the moment, the lubricating oil directly enters the oil supply manifold 14 through the through electromagnetic valve after passing through the oil filter 8. Therefore, the utility model discloses in solve the too high technological problem of lubricating oil temperature among the current parallel refrigeration compressor unit through oil cooling assembly, realized 2 lubricating oil temperature real-time on-line monitoring's of compressor purpose simultaneously, guarantee parallel refrigeration compressor unit's exhaust temperature, effectively improved parallel refrigeration compressor unit's refrigeration effect.
Preferably, the return-air heat exchange assembly comprises a return-air header A11, a return-air header B12 and an economizer 13, wherein the return-air header A11 and the return-air header B12 are vertically installed on the rack 1 and are positioned below the two compressors 2, the economizer 13 is fixed on the rack 1 and is positioned behind the control cabinet 3, an air inlet end of the return-air header B12 is connected to a return-air pipeline of the refrigeration house, lower end inlets of the two economizers 13 are respectively connected with the return-air header B12 through pipelines, upper end inlets of the two economizers 13 are respectively connected to exhaust by-passes of the two compressors 2 through pipelines, upper end outlets of the two economizers 13 are respectively connected to the return-air collector A through pipelines, and an outlet of the return-air collector A is connected with an inlet of the return-air collector 4.
Preferably, the frame 1 is made of C-shaped hot-rolled ordinary channel steel, and is formed by welding, the structural strength of the frame 1 is calculated according to the model, the volume and the weight parameters of the two compressors 2, and the model of the C-shaped hot-rolled ordinary channel steel is determined by the calculated structural strength of the frame 1 and the safety redundancy coefficient.
Claims (7)
1. The utility model provides a two parallel refrigeration compressor units with oil cooling subassembly, includes frame (1), compressor (2), switch board (3), return-air collecting pipe (4), reservoir (5), suction filter (6), oil separator (7), exhaust collecting pipe (9), return-air heat transfer subassembly and oil cooling subassembly, its characterized in that: the two compressors (2) are arranged at the top of the frame (1), the control cabinet (3) is vertically fixed in front of the frame (1), the return air collecting pipe (4) is fixed at the top of the frame (1) through foundation bolts of the return air collecting pipe (4) and is arranged at the back of the two compressors (2), the top of the return air collecting pipe (4) is fixed with a return air pipe and is respectively connected to air inlets of the two compressors (2) through a right-angle stop valve, the liquid reservoir (5) is fixed on a base of the frame (1) through foundation bolts at the bottom of the liquid reservoir (5) and is arranged under the two compressors (2), the top of the liquid reservoir (5) is provided with a pipeline and is connected to an inlet at the bottom of the return air collecting pipe (4) through an air suction filter (6), the oil separator (7) is arranged at the right side of the frame (1) through bolts at the bottom of the oil separator (7), the inlet of the oil separator (7) is connected with the outlet end of the exhaust gas collecting pipe (9), the exhaust ports of the two compressors (2) are respectively connected with the inlet of the exhaust gas collecting pipe (9) through exhaust pipelines, the outlet at the bottom of the oil separator (7) is connected with the inlet of the oil cooling assembly, and the outlet of the oil cooling assembly is respectively connected with the oil return ports of the two compressors (2) through oil pipes.
2. A two parallel refrigeration compressor train with oil cooling assemblies according to claim 1 wherein: the oil cooling assembly comprises an oil filter (8), an air-cooled oil cooler (10), an oil supply header (14) and an oil feeder (15), wherein an outlet at the bottom of the oil separator (7) is connected to an inlet at the lower end of the air-cooled oil cooler (10) after passing through the oil filter (8) through an oil outlet pipeline, an outlet at the upper end of the air-cooled oil cooler (10) enters the oil supply header (14) through an oil pipe, and oil return ports of the two compressors (2) are connected with the oil supply header (14) through the oil feeder (15) respectively.
3. A two parallel refrigeration compressor train with oil cooling assemblies according to claim 1 or 2, characterized in that: a straight-through electromagnetic valve is arranged at an oil pipe between the inlet at the lower end and the outlet at the upper end of the air-cooled oil cooler (10).
4. A two parallel refrigeration compressor train with oil cooling assemblies according to claim 1 or 2, characterized in that: a temperature sensor is arranged on an outlet pipeline of the oil filter (8), and a temperature signal of the temperature sensor is connected to a certain input end of a Programmable Logic Controller (PLC) of the control cabinet (3) through a data line, so that the real-time online monitoring of the oil return temperature of the two compressors (2) is realized.
5. A two parallel refrigeration compressor train with oil cooling assemblies according to claim 1, 2 or 3, characterized in that: the start and stop of the straight-through electromagnetic valve and the air-cooled oil cooler (10) are controlled by a Programmable Logic Controller (PLC) of the control cabinet (3).
6. Two parallel refrigeration compressor groups with oil cooling assemblies according to claim 1, characterized in that: the air return heat exchange assembly comprises an air return header A (11), an air return header B (12) and an economizer (13), wherein the air return header A (11) and the air return header B (12) are vertically installed on a rack (1) and are positioned below two compressors (2), the economizer (13) is fixed on the rack (1) and is positioned behind a control cabinet (3), the air inlet end of the air return header B (12) is connected to an air return pipeline of a refrigeration house, the lower end inlets of the two economizers (13) are respectively connected with the air return header B (12) through pipelines, the upper end inlets of the two economizers (13) are respectively connected to exhaust bypasses of the two compressors (2) through pipelines, the upper end outlets of the two economizers (13) are respectively connected to an air return air collector A through pipelines, and the outlet of the air return air collector A is connected with the inlet of an air return air collector (4).
7. Two parallel refrigeration compressor groups with oil cooling assemblies according to claim 1, characterized in that: the frame (1) is made of C-shaped hot-rolled common channel steel and is formed in a welding mode, the structural strength of the frame (1) is calculated according to the model, the volume and the weight parameters of the two compressors (2), and the model of the C-shaped hot-rolled common channel steel is determined by the calculated structural strength and the safety redundancy coefficient of the frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221371682.3U CN217423671U (en) | 2022-06-03 | 2022-06-03 | Two parallel refrigeration compressor group with oil cooling subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221371682.3U CN217423671U (en) | 2022-06-03 | 2022-06-03 | Two parallel refrigeration compressor group with oil cooling subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217423671U true CN217423671U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221371682.3U Active CN217423671U (en) | 2022-06-03 | 2022-06-03 | Two parallel refrigeration compressor group with oil cooling subassembly |
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| Country | Link |
|---|---|
| CN (1) | CN217423671U (en) |
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2022
- 2022-06-03 CN CN202221371682.3U patent/CN217423671U/en active Active
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