Cooling system of magnetic suspension compressor

Abstract

The utility model relates to a magnetic suspension compressor cooling system. A compressor host is at least provided with a liquid cooling input port and a liquid cooling output port; the two ends of the liquid cooling unit are connected with the liquid cooling input port and the liquid cooling output port correspondingly, and the liquid cooling unit is used for inputting a liquid cooling medium into the compressor host through the liquid cooling input port and the liquid cooling output port so as to cool the compressor; the liquid cooling unit comprises a condenser and a plate heat exchanger; the condenser is connected in parallel with two ends of a first pipeline of the plate heat exchanger and then is connected with a liquid cooling input port and a liquid cooling output port respectively; the plate heat exchanger second pipeline is connected with an external cooling water unit which is used for exchanging heat with a cooling medium of the plate heat exchanger first pipeline through the plate heat exchanger second pipeline. The problems that an existing magnetic suspension compressor cooling system depends on client site cooling water, adaptability is not high, and internal corrosion and blockage of a main engine stator are prone to being caused are solved.

Description

Technical Field

[0001] The present application relates to the technical field of compressor equipment, and in particular to a magnetic suspension compressor cooling system. Background Art

[0002] The magnetic levitation compressor uses electromagnetic force to keep the rotor in a suspended state, which solves the problem of speed limitation caused by traditional bearings, allowing the air compressor to overcome friction resistance and greatly improve the upper speed limit. However, the friction between the compressed air and the pipeline, coupled with the heat generated by the motor itself, seriously affects the long-term stable operation of the compressor, so higher requirements are placed on the heat dissipation of the compressor.

[0003] At present, the existing magnetic suspension compressor cooling system has the following deficiencies:

[0004] 1. The existing cooling system of magnetic levitation compressor is relatively simple, relying more on the cooling water on site of customers, and has poor adaptability;

[0005] 2. In some existing magnetic levitation compressor cooling systems, the water cooling system directly uses the customer's cooling water to cool the main engine. The equipment stability is poor, and the cooling medium water used contains many impurities, which causes internal corrosion and blockage of the main engine stator. Summary of the invention

[0006] The present application mainly solves the problem that the current magnetic levitation compressor cooling system relies on customer on-site cooling water, has poor adaptability, and is prone to internal corrosion and blockage of the main engine stator.

[0007] An embodiment of the present application provides a magnetic suspension compressor cooling system, the cooling system comprising:

[0008] A compressor host, wherein the compressor host is provided with at least a liquid cooling input port and a liquid cooling output port;

[0009] A liquid cooling unit, wherein two ends of the liquid cooling unit are respectively connected to the liquid cooling input port and the liquid cooling output port, and the liquid cooling unit is used to input liquid cooling medium into the compressor host through the liquid cooling input port and the liquid cooling output port to cool the compressor;

[0010] The liquid cooling unit includes a condenser and a plate heat exchanger. The condenser is connected in parallel with both ends of the first pipeline of the plate heat exchanger and is respectively connected to the liquid cooling input port and the liquid cooling output port; a first valve and a first temperature sensor are respectively provided at both ends of the condenser, a second valve and a second temperature sensor are respectively provided at both ends of the first pipeline of the plate heat exchanger, the second pipeline of the plate heat exchanger is connected to an external cooling water unit, and the external cooling water unit is used to exchange heat with the cooling medium of the first pipeline of the plate heat exchanger through the second pipeline of the plate heat exchanger, and the first temperature sensor and the second temperature sensor are respectively provided on one side of the condenser and the first pipeline of the plate heat exchanger close to the liquid cooling input port.

[0011] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, a water pump assembly is provided on the pipeline between the parallel connection point between the condenser and the first pipeline of the plate heat exchanger and the liquid cooling input port, and the water pump assembly includes at least a first water pump.

[0012] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, the water pump assembly also includes a second water pump, and the second water pump is connected in parallel with the first water pump.

[0013] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, an expansion kettle is provided on the pipeline between the water pump assembly and the liquid cooling input port; a third temperature sensor is provided on the pipeline between the parallel connection point between the condenser and the first pipeline of the plate heat exchanger and the liquid cooling output port.

[0014] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the cooling medium is ethylene glycol coolant.

[0015] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the external cooling water unit includes a first intercooler and a cooling water tower connected in parallel, and the two ends of the first intercooler and the cooling water tower after being connected in parallel are respectively connected to the two ends of the second pipeline of the plate heat exchanger, and the cooling water tower is connected to an external water supply; a third valve is provided at the input end of the second pipeline of the plate heat exchanger.

[0016] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the cooling system further includes an air cooling unit and a second intercooler, the compressor main unit is further provided with an air cooling input port and an air cooling output port, the second intercooler is provided with an independent air path, the output end of the air cooling unit is connected to the air cooling input port of the compressor main unit, the air cooling output port of the compressor main unit is connected to an exhaust port, the input end of the air cooling unit is connected to an air inlet, and the independent air path of the second intercooler is incorporated into the air cooling unit;

[0017] The air cooling unit is used to input cooling air to the compressor host through the air cooling input port to cool the compressor.

[0018] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, the air cooling unit includes a filter, a dryer, and a vortex fan, the independent air path of the second intercooler is connected in parallel with a fourth valve, and the two ends of the independent air path of the second intercooler and the fourth valve after being connected in parallel are respectively connected to the vortex fan and the dryer, the other end of the vortex fan is connected to the air inlet through the filter, and the other end of the dryer is connected to the air cooling input port;

[0019] The input end and the output end of the independent air path of the second intercooler are respectively provided with a fifth valve and a fifth temperature sensor.

[0020] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the cooling system also includes a bypass unit, the input end and the output end of the bypass unit are respectively on the main air inlet and the main air outlet of the compressor main unit, and the main air path of the second intercooler is merged into the bypass unit.

[0021] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, a branch is provided at the output end of the main air path of the second intercooler, and the branch is connected to the input end of the dryer through a sixth valve.

[0022] According to the magnetic levitation compressor cooling system of the above embodiment, an independent liquid cooling unit is provided. The cooling unit supplies cooling to the compressor host through an independent liquid cooling medium, and multiple valves and temperature sensors are arranged on the liquid cooling unit, which can achieve a stronger on-site adjustment effect, is not overly dependent on on-site cooling water, and has a stronger response capability; adopting an independent cooling system can disperse the refrigeration load and have a good cooling effect on the compressor host. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the overall structure of a magnetic suspension compressor cooling system provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the cross-sectional structure of the second intercooler of the magnetic levitation compressor cooling system provided in an embodiment of the present application.

[0025] In the figure: 1, compressor host; 2, condenser; 3, plate heat exchanger; 401, liquid cooling input end; 402, liquid cooling output end; 501, first valve; 502, second valve; 503, third valve; 504, fourth valve; 505, fifth valve; 506, sixth valve; 601, first temperature sensor; 602, second temperature sensor; 603, third temperature sensor; 604, fourth temperature sensor; 605, fifth temperature sensor; 7, first Cooler; 8. Cooling water tower; 9. External water supply; 1001. First water pump; 1002. Second water pump; 1003. Water pump one-way valve; 1101. Air cooling input port; 1102. Air cooling output port; 12. Exhaust port; 13. Air inlet; 14. Filter; 15. Second intercooler; 1501. Main air path; 1502. Independent air path; 16. Dryer; 17. Vortex fan; 19. Branch; 20. Main air inlet; 21. Main air outlet; 22. Expansion kettle. DETAILED DESCRIPTION

[0026] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0027] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0028] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0029] Please refer to Figure 1 and Figure 2In order to solve the problem that the current magnetic levitation compressor cooling system relies on customer-site cooling water, has poor adaptability, and is prone to internal corrosion and blockage of the host stator, a magnetic levitation compressor cooling system is provided in an embodiment of the present application, and the cooling system includes a compressor host 1 and a liquid cooling unit. The compressor host 1 and the liquid cooling unit are described in detail below.

[0030] The compressor main unit 1 is provided with at least a liquid cooling input port and a liquid cooling output port.

[0031] A liquid cooling unit, wherein two ends of the liquid cooling unit are respectively connected to the liquid cooling input port and the liquid cooling output port, and the liquid cooling unit is used to input liquid cooling medium to the compressor host 1 through the liquid cooling input port and the liquid cooling output port to cool the compressor.

[0032] The liquid cooling unit includes a condenser 2 and a plate heat exchanger 3. The condenser 2 is connected in parallel with both ends of the first pipeline of the plate heat exchanger 3 and are respectively connected to the liquid cooling input port and the liquid cooling output port; a first valve 501 and a first temperature sensor 601 are respectively provided at both ends of the condenser 2, and a second valve 502 and a second temperature sensor 602 are respectively provided at both ends of the first pipeline of the plate heat exchanger 3. The second pipeline of the plate heat exchanger 3 is connected to an external cooling water unit, and the external cooling water unit is used to exchange heat with the cooling medium of the first pipeline of the plate heat exchanger 3 through the second pipeline of the plate heat exchanger 3. The first temperature sensor 601 and the second temperature sensor 602 are respectively provided on one side of the condenser 2 and the first pipeline of the plate heat exchanger 3 close to the liquid cooling input port.

[0033] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, a water pump assembly is provided on the pipeline between the parallel connection point of the first pipeline of the condenser 2 and the plate heat exchanger 3 and the liquid cooling input port, and the water pump assembly includes at least a first water pump 1001.

[0034] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, the water pump assembly also includes a second water pump 1002 , and the second water pump 1002 is connected in parallel with the first water pump 1001 .

[0035] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, an expansion kettle 22 is provided on the pipeline between the water pump assembly and the liquid cooling input port; a third temperature sensor 603 is provided on the pipeline between the parallel connection point of the first pipeline of the condenser 2 and the plate heat exchanger 3 and the liquid cooling output port.

[0036] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the cooling medium is ethylene glycol coolant.

[0037] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the external cooling water unit includes a first intercooler 7 and a cooling water tower 8 connected in parallel, and the two ends of the first intercooler 7 and the cooling water tower 8 after being connected in parallel are respectively connected to the two ends of the second pipeline of the plate heat exchanger 3, and the cooling water tower 8 is connected to an external water supply 9; a third valve 503 is provided at the input end of the second pipeline of the plate heat exchanger 3.

[0038] In some embodiments, the liquid cooling unit does not use the traditional parallel external cooling water to cool the host stator part, but uses an independent cooling system, and the cooling medium is ethylene glycol coolant. This solves the problems of internal corrosion and blockage of the host caused by directly using tap water.

[0039] In some embodiments, the first water pump 1001 and the second water pump 1002 are PWM modulated DC water pumps. The speed of the first water pump 1001 and / or the second water pump 1002 is adjusted according to the actual flow rate and heat dissipation requirements. When the compressor runs at a high pressure for a long time and generates a lot of heat, a single water pump cannot meet the flow demand, so two water pumps are turned on to increase the maximum flow limit and control the temperature of the compressor host 1.

[0040] In some embodiments, a water pump one-way valve 1003 is respectively provided at the output end of the first water pump 1001 and the second water pump 1002, and the conducting direction of the water pump one-way valve 1003 points to the liquid cooling input port.

[0041] In some embodiments, the cooling water circuit of the liquid cooling unit adopts the parallel connection of the condenser 2 and the plate heat exchanger 3. The condensing fan of the condenser 2 is installed in front of the input inductor and the output inductor of the condenser 2 (this device generates the most heat and is installed in the air intake chamber). The temperature data collected by the PT100 temperature sensors at each water outlet is sent to the PLC controller. After comparative calculation, the first valve 501, the second valve 502, the third valve 503 and the rotation speed of the condensing fan of the condenser 2 are adjusted to obtain the lowest temperature cooling parameters for dissipating heat for the compressor host 1.

[0042] In some embodiments, according to different customer site conditions, the second valve 502 can be adjusted at the front end of the plate heat exchanger 3. Under the condition that the intercooler cools the compressor air, the water flow rate of the external cooling water unit 9 of the plate heat exchanger 3 is increased to bring more cooling effect to the compressor main unit 1.

[0043] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the cooling system also includes an air cooling unit and a second intercooler 15, the compressor main unit 1 is also provided with an air cooling input port 1101 and an air cooling output port 1102, the second intercooler 15 is provided with an independent air path 1502, the output end of the air cooling unit is connected to the air cooling input port 1101 of the compressor main unit 1, the air cooling output port 1102 of the compressor main unit 1 is connected to the exhaust port 12, the input end of the air cooling unit is connected to the air inlet 13, and the independent air path 1502 of the second intercooler 15 is incorporated into the air cooling unit; the air cooling unit is used to input cooling air to the compressor main unit 1 through the air cooling input port 1101 to cool the compressor.

[0044] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the air cooling unit includes a filter 14, a dryer 16, and a vortex fan 17. The independent air path 1502 of the second intercooler 15 is connected in parallel with a fourth valve 504. The two ends of the independent air path 1502 of the second intercooler 15 and the fourth valve 504 after being connected in parallel are respectively connected to the vortex fan 17 and the dryer 16. The other end of the vortex fan 17 is connected to the air inlet 13 through the filter 14, and the other end of the dryer 16 is connected to the air cooling input port 1101; the input end and the output end of the independent air path 1502 of the second intercooler 15 are respectively provided with a fifth valve 505 and a fifth temperature sensor 605; the output end of the fourth valve 504 is provided with a fourth temperature sensor 604.

[0045] In some embodiments, the independent air path 1502 first passes through the filter screen at the front end of the second intercooler 15 cabinet, and then passes through the independent air path 1502 of the second intercooler 15 for cooling. At the same time, this path has a bypass. The temperature rise of the compressor host 1 and the cooling requirements of the second intercooler 15 are compared through the fourth temperature sensor 604 and the fifth temperature sensor 605 to adjust the fourth valve 504 and the fifth valve 505 corresponding to the fourth temperature sensor 604 and the fifth temperature sensor 605, respectively, to obtain the best operation effect of the whole machine. Then the compressor host 1 is cooled through the dryer 16; the dryer 16 is used to dry the air and slow down the internal corrosion of the fan.

[0046] In the above-mentioned magnetic levitation compressor cooling system, as a preferred embodiment, the cooling system also includes a bypass unit, the input end and the output end of the bypass unit are respectively on the main air inlet 20 and the main air outlet 21 of the compressor main unit 1, and the main air path 1501 of the second intercooler 15 is incorporated into the bypass unit.

[0047] In the above-mentioned magnetic levitation compressor cooling system, as a preferred solution, a branch 19 is provided at the output end of the main air path 1501 of the second intercooler 15 , and the branch 19 is connected to the input end of the dryer 16 through a sixth valve 506 .

[0048] In some embodiments, a branch line 19 is led out from the output end of the second intercooler 15, and at the air cooling input port 1101 of the compressor main unit 1, when the filter cotton of the filter 14 is blocked, it enters the self-cleaning mode; the speed of the compressor main unit 1 is increased, the vortex fan 17 is stopped, and then, the bypass sixth valve 506 is opened at a specific angle to continue the air cooling effect of the compressor main unit 1 for a short time. During this period, the condensing fan or vortex fan 17 set in the second intercooler 15 is reversed to clean the filter screen of the filter 14, so as to achieve the effect of cleaning the filter screen without stopping the machine.

[0049] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0050] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A magnetic suspension compressor cooling system, characterized in that: The cooling system comprises: A compressor host, wherein the compressor host is provided with at least a liquid cooling input port and a liquid cooling output port; A liquid cooling unit, wherein two ends of the liquid cooling unit are respectively connected to the liquid cooling input port and the liquid cooling output port, and the liquid cooling unit is used to input liquid cooling medium into the compressor host through the liquid cooling input port and the liquid cooling output port to cool the compressor; The liquid cooling unit includes a condenser and a plate heat exchanger. The condenser is connected in parallel with both ends of the first pipeline of the plate heat exchanger and is respectively connected to the liquid cooling input port and the liquid cooling output port; a first valve and a first temperature sensor are respectively provided at both ends of the condenser, a second valve and a second temperature sensor are respectively provided at both ends of the first pipeline of the plate heat exchanger, the second pipeline of the plate heat exchanger is connected to an external cooling water unit, and the external cooling water unit is used to exchange heat with the cooling medium of the first pipeline of the plate heat exchanger through the second pipeline of the plate heat exchanger, and the first temperature sensor and the second temperature sensor are respectively provided on one side of the condenser and the first pipeline of the plate heat exchanger close to the liquid cooling input port.

2. The magnetic suspension compressor cooling system according to claim 1, characterized in that: A water pump assembly is provided on the pipeline between the parallel connection point between the condenser and the first pipeline of the plate heat exchanger and the liquid cooling input port, and the water pump assembly includes at least a first water pump.

3. The magnetic suspension compressor cooling system according to claim 2, characterized in that: The water pump assembly also includes a second water pump, which is connected in parallel with the first water pump.

4. The magnetic suspension compressor cooling system according to claim 2, characterized in that: An expansion kettle is provided on the pipeline between the water pump assembly and the liquid cooling input port; a third temperature sensor is provided on the pipeline between the parallel connection point between the condenser and the first pipeline of the plate heat exchanger and the liquid cooling output port.

5. The magnetic suspension compressor cooling system according to claim 1, characterized in that: The cooling medium is ethylene glycol coolant.

6. The magnetic suspension compressor cooling system according to claim 1, characterized in that: The external cooling water unit includes a first intercooler and a cooling water tower connected in parallel, the two ends of the first intercooler and the cooling water tower after being connected in parallel are respectively connected to the two ends of the second pipeline of the plate heat exchanger, and the cooling water tower is connected to an external water supply; a third valve is provided at the input end of the second pipeline of the plate heat exchanger.

7. The magnetic suspension compressor cooling system according to claim 1, characterized in that: The cooling system further comprises an air cooling unit and a second intercooler, the compressor main unit is further provided with an air cooling input port and an air cooling output port, the second intercooler is provided with an independent air path, the output end of the air cooling unit is connected to the air cooling input port of the compressor main unit, the air cooling output port of the compressor main unit is connected to an exhaust port, the input end of the air cooling unit is connected to an air inlet, and the independent air path of the second intercooler is merged into the air cooling unit; The air cooling unit is used to input cooling air to the compressor host through the air cooling input port to cool the compressor.

8. The magnetic suspension compressor cooling system according to claim 7, characterized in that: The air cooling unit comprises a filter, a dryer, and a vortex fan. The independent air path of the second intercooler is connected in parallel with a fourth valve. The two ends of the independent air path of the second intercooler and the fourth valve are connected in parallel and are respectively connected to the vortex fan and the dryer. The other end of the vortex fan is connected to the air inlet through the filter, and the other end of the dryer is connected to the air cooling input port. The input end and the output end of the independent air path of the second intercooler are respectively provided with a fifth valve and a fifth temperature sensor; the output end of the fourth valve is provided with a fourth temperature sensor.

9. The magnetic suspension compressor cooling system according to claim 8, characterized in that: The cooling system further comprises a bypass unit, the input end and the output end of the bypass unit are respectively on the main air inlet and the main air outlet of the compressor main unit, and the main air path of the second intercooler is merged into the bypass unit.

10. The magnetic suspension compressor cooling system according to claim 9, characterized in that: A branch is provided at the output end of the main air path of the second intercooler, and the branch is connected to the input end of the dryer through a sixth valve.

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