CN217929279U - Parallel refrigeration compressor unit with function of reducing air inlet temperature - Google Patents
Parallel refrigeration compressor unit with function of reducing air inlet temperature Download PDFInfo
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- CN217929279U CN217929279U CN202222248579.6U CN202222248579U CN217929279U CN 217929279 U CN217929279 U CN 217929279U CN 202222248579 U CN202222248579 U CN 202222248579U CN 217929279 U CN217929279 U CN 217929279U
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Abstract
The utility model provides a parallelly connected compressor unit with reduce inlet temperature, return-air main header (4) are installed on the base of parallelly connected compressor unit's frame, a plurality of compressor (1) are installed in the top of frame with parallelly connected mode, install stop valve first (3) and inhale filter (2) between the air inlet of return-air main header (4) and compressor (1) in proper order, the external reservoir of unsettled one end of stop valve second (5), the other end of stop valve second (5) is connected to on supplying liquid header (17) through vapour and liquid separator (6) and stop valve third (14), cooling system installs between supplying liquid header (17) and returning liquid header (7), the circulation working medium liquid by cooling system discharge gets into in returning liquid header (7), the external reservoir of the suspension end of returning liquid header (7). The parallel refrigeration compressor set utilizes the circulating working medium and the cooling system of the liquid storage device to cool the inlet air temperature of the parallel refrigeration compressor set, and has the advantages of simple structure and convenient operation.
Description
Technical Field
The utility model relates to a parallel refrigeration compressor group technical field, concretely relates to parallel refrigeration compressor unit with reduce inlet air temperature.
Background
The parallel refrigeration compressor unit is formed by connecting a plurality of refrigeration compressors with equal or unequal capacity in a parallel connection mode, wherein the plurality of refrigeration compressors share parts such as an exhaust gas collecting pipe, an air suction collecting pipe, a liquid storage device, an oil separator and the like, the parallel refrigeration compressor unit is controlled by a centralized control cabinet, and meanwhile the centralized control cabinet performs centralized control on parts such as an evaporative condenser, a refrigeration terminal, other valves, sensors and the like so as to realize normal operation of the parallel refrigeration compressor unit and the whole refrigeration house system.
However, the parallel refrigeration compressor units also have a plurality of technical problems, wherein the overhigh exhaust temperature of the parallel refrigeration compressor units is one of the common technical problems of the parallel refrigeration compressor units, and when the exhaust temperature of the parallel refrigeration compressor units is overhigh, the phenomena of compressor overheating, refrigeration system lubricating oil failure, deterioration of refrigerant and lubricating oil, shortened service life of the compressor and the like are caused, and the safety and the stability of the parallel refrigeration compressor units are directly influenced. The reasons for the overhigh exhaust temperature of the parallel refrigeration compressor set comprise two aspects of overhigh oil supply temperature and overhigh liquid supply temperature, wherein the overhigh liquid supply temperature is the main reason for the phenomenon. Therefore, on the basis of the existing parallel refrigeration compressor unit, how to utilize the low-temperature circulating working medium in the liquid reservoir to cool down and cool the inlet air temperature of the parallel refrigeration compressor unit so as to ensure that the inlet air temperature of the parallel refrigeration compressor unit is in the range of the design value, thereby avoiding the exhaust temperature overheating phenomenon of the parallel refrigeration compressor unit, and solving the technical problem of the parallel refrigeration compressor unit urgently.
SUMMERY OF THE UTILITY MODEL
The utility model is directed at above-mentioned technical defect, in order to solve parallelly connected compressor unit and advance the too high technological problem of temperature, provided a parallelly connected compressor unit with reduce inlet air temperature.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a parallelly connected refrigeration compressor unit with reduce inlet air temperature, which comprises a compressor, return-air main header, return-liquid header, supply liquid header and cooling system, return-air main header installs on the base of parallelly connected refrigeration compressor unit's frame, a plurality of compressor is installed in the top of frame with parallelly connected mode, install stop valve first and the filter of breathing in between the air inlet of return-air main header and compressor in proper order, the external reservoir of unsettled one end of stop valve second, the other end of stop valve second is connected to on supplying the liquid header through vapour and liquid separator and stop valve third, cooling system installs between supplying liquid header and return-liquid header, the circulation working medium liquid by cooling system exhaust gets into in the return-liquid header, the external reservoir of the unsettled end of return-liquid header.
The cooling system comprises a plate heat exchanger, a first electromagnetic valve, a second electromagnetic valve, a liquid observing device, an expansion valve and a liquid supply filter, wherein a liquid supply inlet of the plate heat exchanger is connected to a liquid supply collecting pipe through a third electromagnetic valve, a liquid supply outlet of the plate heat exchanger is connected to a liquid return collecting pipe through the first electromagnetic valve, a cooling gas outlet of the plate heat exchanger is connected to an air inlet of a compressor through a pipeline, a bypass pipeline is arranged in a liquid supply inlet pipeline of the plate heat exchanger, and the bypass pipeline is connected to a cooling liquid inlet of the plate heat exchanger sequentially through the liquid supply filter, the liquid observing device, the second electromagnetic valve and the expansion valve.
The air inlet of the compressor is provided with a temperature sensor, a signal line of the temperature sensor is connected to a control system of the parallel refrigeration compressor unit and used for monitoring the temperature of the circulating working medium at the air inlet of the compressor in real time, when the temperature of the circulating working medium at the air inlet of the compressor is higher than a design value, the control system of the parallel refrigeration compressor unit sends an opening command to the electromagnetic valve C, the electromagnetic valve A and the electromagnetic valve B, and at the moment, the cooling system starts to work and cools the circulating working medium at the air inlet of the compressor.
The system comprises a stop valve A, a stop valve B and a stop valve C, wherein the stop valve A, the stop valve B and the stop valve C are in a normally open state, the electromagnetic valve A, the electromagnetic valve B and the electromagnetic valve C are in a normally closed state, after a control system of the parallel refrigeration compressor unit sends opening commands to the electromagnetic valve C, the electromagnetic valve A and the electromagnetic valve B, part of liquid circulating working medium entering the plate heat exchanger from a liquid supply inlet of the plate heat exchanger enters a bypass pipeline and sequentially enters an expansion valve through a liquid supply filter, a liquid sight device and the electromagnetic valve B, the liquid circulating working medium expands and evaporates to form gaseous circulating working medium entering the plate heat exchanger and exchanges heat with the liquid circulating working medium flowing into the plate heat exchanger from the liquid supply inlet of the plate heat exchanger, the gaseous circulating working medium is discharged from a cooling gas outlet of the plate heat exchanger and enters an air inlet of a compressor, and after heat exchange of the plate heat exchanger, the gaseous circulating working medium discharged from a cooling gas outlet of the plate heat exchanger is prevented from having a high supercooling degree.
Drawings
Fig. 1 is an overall structure diagram of a five-parallel refrigeration compressor unit for reducing the inlet air temperature according to the present invention;
FIG. 2 is a partial block diagram of FIG. 1;
fig. 3 is a structural diagram of the plate heat exchanger of the present invention.
Labeled in the figure as: 1: a compressor; 2: an intake filter; 3: a stop valve A; 4: a return air main header; 5: a stop valve B; 6: a gas-liquid separator; 7: a liquid return header; 8: a first electromagnetic valve; 9: a solenoid valve B; 10: observing a liquid device; 11: an expansion valve; 12: a liquid supply filter; 13: a plate heat exchanger; 131: a liquid supply inlet; 132: a cooling gas outlet; 133: a liquid supply outlet; 134: a coolant inlet; 14: a stop valve C; 15: a solenoid valve C; 16: a bypass conduit; 17: a liquid supply header.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
Referring to the attached drawings 1, 2 and 3, the parallel refrigeration compressor set capable of reducing the inlet air temperature comprises a compressor 1, a main air return header 4, a liquid return header 7, a liquid supply header 17 and a cooling system, wherein the main air return header 4 is installed on a base of a rack of the parallel refrigeration compressor set, a plurality of compressors 1 are installed on the top of the rack in a parallel mode, a stop valve A3 and an air suction filter 2 are sequentially installed between the main air return header 4 and an air inlet of the compressor 1, a suspension end of the stop valve B5 is externally connected with a liquid storage device, the other end of the stop valve B5 is connected to the liquid supply header 17 through a gas-liquid separator 6 and a stop valve C14, the cooling system is installed between the liquid supply header 17 and the liquid return header 7, circulating working medium liquid discharged by the cooling system enters the liquid return header 7, and the suspension end of the liquid return header 7 is externally connected with the liquid storage device.
The cooling system comprises a plate heat exchanger 13, a solenoid valve A8, a solenoid valve B9, a liquid observing device 10, an expansion valve 11 and a liquid supply filter 12, wherein a liquid supply inlet 131 of the plate heat exchanger 13 is connected to a liquid supply header 17 through a solenoid valve C15, a liquid supply outlet 133 of the plate heat exchanger 13 is connected to a liquid return header 7 through a solenoid valve A8, a cooling gas outlet 132 of the plate heat exchanger 13 is connected to an air inlet of the compressor 1 through a pipeline, a bypass pipeline 16 is arranged in a liquid supply inlet 131 pipeline of the plate heat exchanger 13, and the bypass pipeline 16 is connected to a cooling liquid inlet 134 of the plate heat exchanger 13 through the liquid supply filter 12, the liquid observing device 10, the solenoid valve B9 and the expansion valve 11 in sequence.
The air inlet of the compressor 1 is provided with a temperature sensor, a signal line of the temperature sensor is connected to a control system of the parallel refrigeration compressor set and used for monitoring the temperature of a circulating medium of the air inlet of the compressor 1 in real time, when the temperature of the circulating medium of the air inlet of the compressor 1 is higher than a design value, the control system of the parallel refrigeration compressor set sends an opening command to the electromagnetic valve C15, the electromagnetic valve A8 and the electromagnetic valve B9, and at the moment, the cooling system starts to work and cools the circulating medium of the air inlet of the compressor 1.
The stop valves A3, B5 and C14 are in a normally open state, the electromagnetic valves A8, B9 and C15 are in a normally closed state, when a control system of the parallel refrigeration compressor unit sends an opening command to the electromagnetic valves C15, A8 and B9, a part of liquid circulating working medium entering the plate heat exchanger 13 from the liquid supply inlet 131 of the plate heat exchanger 13 enters the bypass pipeline 16 and sequentially enters the expansion valve 11 through the liquid supply filter 12, the liquid level indicator 10 and the electromagnetic valve B9, the liquid circulating working medium expands and evaporates to form gaseous circulating working medium entering the plate heat exchanger 13, and exchanges heat with the liquid circulating working medium flowing into the plate heat exchanger 13 from the liquid supply inlet 131 of the plate heat exchanger 13, and is discharged from the cooling gas outlet 132 of the plate heat exchanger 13 to enter the gas inlet of the compressor 1, and after heat exchange of the plate heat exchanger 13, the phenomenon that the gaseous circulating working medium discharged from the cooling gas outlet 132 of the plate heat exchanger 13 has a high supercooling degree is avoided.
Claims (4)
1. A parallel refrigeration compressor set with reduced inlet air temperature, comprising a compressor (1), a main return air header (4), a liquid return header (7), a liquid supply header (17) and a temperature reduction system, characterized in that: the air return main header (4) is installed on a base of a rack of a parallel refrigeration compressor unit, a plurality of compressors (1) are installed at the top of the rack in a parallel mode, a stop valve A (3) and an air suction filter (2) are sequentially installed between air inlets of the air return main header (4) and the compressors (1), a suspended one-end external liquid storage device of a stop valve B (5) is arranged, the other end of the stop valve B (5) is connected to a liquid supply header (17) through a gas-liquid separator (6) and a stop valve C (14), a cooling system is installed between the liquid supply header (17) and a liquid return header (7), circulating working medium liquid discharged by the cooling system enters the liquid return header (7), and the suspended end of the liquid return header (7) is externally connected with the liquid storage device.
2. A parallel refrigeration compressor train with reduced inlet air temperature according to claim 1, wherein: the cooling system comprises a plate heat exchanger (13), a first electromagnetic valve (8), a second electromagnetic valve (9), a liquid observing device (10), an expansion valve (11) and a liquid supply filter (12), a liquid supply inlet (131) of the plate heat exchanger (13) is connected to a liquid supply header (17) through a third electromagnetic valve (15), a liquid supply outlet (133) of the plate heat exchanger (13) is connected to a liquid return header (7) through the first electromagnetic valve (8), a cooling gas outlet (132) of the plate heat exchanger (13) is connected to an air inlet of a compressor (1) through a pipeline, a bypass pipeline (16) is arranged in a liquid supply inlet (131) pipeline of the plate heat exchanger (13), and the bypass pipeline (16) sequentially passes through the liquid supply filter (12), the liquid observing device (10), the second electromagnetic valve (9) and the expansion valve (11) and is connected to a cooling liquid inlet (134) of the plate heat exchanger (13).
3. A parallel refrigeration compressor train with reduced inlet air temperature according to claim 1 wherein: a temperature sensor is installed at an air inlet of the compressor (1), and a signal line of the temperature sensor is connected to a control system of the parallel refrigeration compressor unit.
4. A parallel refrigeration compressor train with reduced inlet air temperature according to claim 1 wherein: the stop valve A (3), the stop valve B (5) and the stop valve C (14) are in a normally open state, and the electromagnetic valve A (8), the electromagnetic valve B (9) and the electromagnetic valve C (15) are in a normally closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248579.6U CN217929279U (en) | 2022-08-25 | 2022-08-25 | Parallel refrigeration compressor unit with function of reducing air inlet temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248579.6U CN217929279U (en) | 2022-08-25 | 2022-08-25 | Parallel refrigeration compressor unit with function of reducing air inlet temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217929279U true CN217929279U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222248579.6U Active CN217929279U (en) | 2022-08-25 | 2022-08-25 | Parallel refrigeration compressor unit with function of reducing air inlet temperature |
Country Status (1)
| Country | Link |
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| CN (1) | CN217929279U (en) |
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2022
- 2022-08-25 CN CN202222248579.6U patent/CN217929279U/en active Active
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