Cooling device and centrifugal compressor

Abstract

The utility model discloses a cooling device and a centrifugal compressor. The cooling device comprises a cooling inlet, a cooling three-way seat, an electromagnetic valve and a cooling outlet, and the cooling inlet is communicated with the cooling three-way seat; cooling liquid flows into the cooling three-way seat from the cooling inlet; one outlet of the cooling three-way seat is communicated with a cooling pipeline in the centrifugal compressor; the other outlet is communicated with an inlet of the electromagnetic valve, and an outlet of the electromagnetic valve is communicated with the cooling pipeline; cooling liquid flows into the centrifugal compressor after passing through the cooling three-way seat or flows into the electromagnetic valve and then flows into the centrifugal compressor; and the cooling outlet flows out. The cooling device is arranged on the shell, and cooling liquid flows into the cooling three-way seat through the cooling inlet and then flows into a cooling pipeline of the centrifugal compressor; and the water can flow into the cooling pipeline through the electromagnetic valve, so that the cooling efficiency of the centrifugal compressor is further improved. The cooling liquid flows out of the centrifugal compressor through the cooling outlet, and cooling of the centrifugal compressor is completed. The cooling device is simple in structure and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to the compressor field especially relates to a cooling device and centrifugal compressor. BACKGROUND

[0002] Centrifugal compressor is one kind of compressor, and the compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas. The compressor is widely used in air conditioning, heat pump, ice storage and other industries.

[0003] The centrifugal compressor is widely used when used for refrigeration due to its large single-machine refrigerating capacity, few wearing parts and high performance.

[0004] At present, in order to cool the compressor, high-pressure refrigerant can be introduced from the condenser or the economizer, the refrigerant enters the motor and bearing cooling pipeline of the compressor again to cool the same, and the refrigerant returns to the evaporator through different circuits. This cooling scheme has many pipelines and complex design. If it is corresponding to the client, the machine body technician needs to train and design and assemble, and the construction cost is high. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem in the prior art that the compressor cooling pipeline is complex in design, and provides a cooling device and centrifugal compressor.

[0006] The utility model solves the above technical problem by the following technical scheme:

[0007] A cooling device is used for a centrifugal compressor, the cooling device is arranged on the shell of the centrifugal compressor, and the cooling device comprises a cooling inlet, a cooling tee joint seat, an electromagnetic valve and a cooling outlet, the cooling inlet is in communication with the cooling tee joint seat, cooling liquid flows into the cooling tee joint seat from the cooling inlet, one outlet of the cooling tee joint seat is in communication with a cooling pipeline in the centrifugal compressor, the other outlet of the cooling tee joint seat is in communication with the inlet of the electromagnetic valve, the outlet of the electromagnetic valve is in communication with the cooling pipeline in the centrifugal compressor, cooling liquid flows into the centrifugal compressor after passing through the cooling tee joint seat or flows into the centrifugal compressor after passing through the electromagnetic valve, and the cooling liquid in the centrifugal compressor flows out through the cooling outlet.

[0008] In the scheme, by adopting the above structure, the cooling device is arranged on the shell of the centrifugal compressor, cooling liquid flows into the cooling tee joint seat through the cooling inlet, and then can directly flow into the cooling pipeline of the centrifugal compressor, so that the centrifugal compressor is cooled; or the cooling liquid flows into the cooling pipeline through the electromagnetic valve, so that the cooling efficiency of the centrifugal compressor is further improved. The cooling liquid flows out of the centrifugal compressor through the cooling outlet, and the cooling of the centrifugal compressor is completed. The cooling device is simple in structure and convenient to install.

[0009] Optionally, the electromagnetic valve is in a normally closed state, and the cooling liquid flows into the centrifugal compressor after passing through the cooling tee joint.

[0010] Optionally, when the temperature of the centrifugal compressor is higher than a preset value, the electromagnetic valve is opened, the cooling liquid flows into the electromagnetic valve after passing through the cooling tee joint, and then flows into the centrifugal compressor.

[0011] Optionally, the cooling device further comprises a copper pipe and an angle valve, the copper pipe is arranged between the angle valve and the cooling tee joint, and the angle valve is connected with the cooling pipeline of the centrifugal compressor.

[0012] Optionally, the cooling device further comprises a copper pipe and an angle valve, the copper pipe is arranged between the angle valve and the electromagnetic valve, and the angle valve is connected with the cooling pipeline of the centrifugal compressor.

[0013] Optionally, the cooling device further comprises a condenser, the condenser is connected with the cooling inlet, and the cooling liquid flows into the cooling inlet after passing through the condenser.

[0014] Optionally, the cooling device further comprises an evaporator, the evaporator is connected with the cooling outlet, and the cooling liquid flows into the evaporator after passing through the cooling outlet.

[0015] A centrifugal compressor, the centrifugal compressor comprises the cooling device.

[0016] The positive progress effect of the centrifugal compressor is that:

[0017] The cooling device is arranged on the shell of the centrifugal compressor, the cooling liquid flows into the cooling tee joint through the cooling inlet, and then can directly flow into the cooling pipeline of the centrifugal compressor, so that the centrifugal compressor is cooled; or the cooling liquid flows into the cooling pipeline after passing through the electromagnetic valve, so that the cooling efficiency of the centrifugal compressor is further improved. The cooling liquid flows out of the centrifugal compressor through the cooling outlet, and the cooling of the centrifugal compressor is completed. The cooling device has simple structure and is convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structure schematic view of a centrifugal compressor according to an embodiment of the present utility model.

[0019] Figure 2 FIG. 2 is a structure schematic view of a cooling device in a centrifugal compressor. Figure 1

[0020] FIG. 3 is a flow chart of a centrifugal compressor cooling system. Figure 3 Figure 1 FIG. 4 is a structure schematic view of a centrifugal compressor cooling system.

[0021] MARKS OF THE DRAWINGS:

[0022] ​Cooling device 100

[0023] Cooling inlet 11

[0024] Cooling tee 12

[0025] Solenoid valve 13

[0026] Cooling outlet 14

[0027] Copper pipe 15

[0028] Angle valve 16

[0029] Condenser 17

[0030] Evaporator 18

[0031] Centrifugal compressor 200

[0032] Casing 21 Detailed Implementation

[0033] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0034] like Figures 1-3 As shown, this embodiment includes a cooling device 100 and a centrifugal compressor 200. The cooling device 100 is used in the centrifugal compressor 200.

[0035] exist Figure 1 In the centrifugal compressor 200, a cooling device 100 is installed in the housing 21. The cooling device 100 includes a cooling inlet 11, a cooling three-way connector 12, a solenoid valve 13, and a cooling outlet 14. The cooling inlet 11 is connected to the cooling three-way connector 12. Coolant flows into the cooling three-way connector 12 from the cooling inlet 11. One outlet of the cooling three-way connector 12 is connected to the cooling pipeline inside the centrifugal compressor 200. The other outlet of the cooling three-way connector 12 is connected to the inlet of the solenoid valve 13. The outlet of the solenoid valve 13 is connected to the cooling pipeline inside the centrifugal compressor 200. Coolant flows into the centrifugal compressor 200 after passing through the cooling three-way connector 12 or into the centrifugal compressor 200 after passing through the solenoid valve 13. Coolant in the centrifugal compressor 200 flows out through the cooling outlet 14. By installing the cooling device 100 on the housing 21 of the centrifugal compressor 200, coolant flows into the cooling tee 12 through the cooling inlet 11, and then directly into the cooling pipes of the centrifugal compressor 200 to cool it; alternatively, it can flow into the cooling pipes after passing through the solenoid valve 13, further improving the cooling efficiency of the centrifugal compressor 200. The coolant flows out of the centrifugal compressor 200 through the cooling outlet 14, completing the cooling of the centrifugal compressor 200. The cooling device 100 has a simple structure and is easy to install.

[0036] The cooling device 100 can cool the motor and bearing of the centrifugal compressor 200. The cooling device 100 is arranged on the shell 21 of the centrifugal compressor 200, and the motor and bearing cooling inlet 11 is connected. The electromagnetic valve 13 is arranged to control the flow of the refrigerant into the motor cooling. The main factory sets the electromagnetic valve 13 to automatically adjust the cooling flow according to the internal temperature.

[0037] The cooling device 100 only needs one cooling inlet 11, which can reduce the additional configuration of the cooling pipeline when using a liquid-cooled compressor. The cooling device 100 is convenient and simple, and does not require additional technical personnel training. The cooling flow can be designed by the control logic design at the factory, which can accurately grasp and reduce the power consumption and insufficient cooling of the liquid-cooled compressor.

[0038] The electromagnetic valve 13 is in a normally closed state, and the cooling liquid flows into the centrifugal compressor 200 through the cooling tee seat 12. When the temperature of the centrifugal compressor 200 is higher than the preset value, the electromagnetic valve 13 is opened, and the cooling liquid flows into the electromagnetic valve 13 through the cooling tee valve, and then flows into the centrifugal compressor 200.

[0039] When the temperature rises above the set temperature, the electromagnetic valve 13 can be opened by the controller, and the cooling liquid entering from the cooling inlet 11 increases one way, and enters the motor cooling through the copper pipe 15 controlled by the angle valve 16.

[0040] When the temperature decreases below the set temperature, the electromagnetic valve 13 can be closed by the controller, and the cooling liquid enters the copper pipe 15 through the cooling inlet 11, and enters the liquid-cooled compressor cooling controlled by the angle valve 16.

[0041] In combination Figure 2 , the cooling device 100 further comprises a copper pipe 15 and an angle valve 16. The copper pipe 15 is arranged between the angle valve 16 and the cooling tee seat 12, and the angle valve 16 is connected with the cooling pipeline of the centrifugal compressor 200. The copper pipe 15 is arranged between the angle valve 16 and the electromagnetic valve 13, and the angle valve 16 is connected with the cooling pipeline of the centrifugal compressor 200.

[0042] In Figure 3 , the cooling device 100 further comprises a condenser 17, and the condenser 17 is connected with the cooling inlet 11. The cooling liquid flows into the cooling inlet 11 through the condenser 17.

[0043] As an embodiment, the cooling device 100 further comprises an evaporator 18, and the evaporator 18 is connected with the outlet of the cooling inlet 11. The cooling liquid flows into the evaporator 18 through the cooling outlet 14.

[0044] By setting a cooling device 100 on the compressor motor shell, the cooling device 100 has the advantages of controlling flow and simplifying external connecting pipeline, the cooling device 100 only needs a cooling inlet, the cooling liquid is distributed through a cooling tee joint 12, the temperature feedback of the liquid cooling compressor is monitored by the main machine, the opening and closing of the electromagnetic valve 13 is controlled, the flow of the cooling liquid is adjusted, and the purpose of reasonable cooling is achieved.

[0045] The cooling device 100 can well control the cooling flow and reduce power consumption through the built-in electromagnetic valve 13; at the same time, the control temperature can be set when the main machine factory is shipped, so that the centrifugal compressor 200 is well protected. The whole centrifugal compressor 200 is only provided with one cooling inlet 11, which is convenient for customers to use and simple to install.

[0046] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A cooling device for a centrifugal compressor, characterized in that, The cooling device is disposed in the housing of the centrifugal compressor, and the cooling device includes: Cooling inlet; A cooling three-way connector and a solenoid valve are provided. The cooling inlet is connected to the cooling three-way connector. Coolant flows into the cooling three-way connector from the cooling inlet. One outlet of the cooling three-way connector is connected to the cooling pipeline inside the centrifugal compressor. The other outlet of the cooling three-way connector is connected to the inlet of the solenoid valve. The outlet of the solenoid valve is connected to the cooling pipeline inside the centrifugal compressor. Coolant flows into the centrifugal compressor after passing through the cooling three-way connector or flows into the centrifugal compressor after passing through the solenoid valve. Cooling outlet, through which the coolant inside the centrifugal compressor flows out.

2. The cooling device as described in claim 1, characterized in that, The solenoid valve is normally closed, and the coolant flows into the centrifugal compressor after passing through the cooling three-way seat.

3. The cooling device as described in claim 1, characterized in that, When the temperature of the centrifugal compressor is higher than the preset value, the solenoid valve is opened, and the coolant flows into the solenoid valve through the cooling three-way seat, and then into the centrifugal compressor.

4. The cooling device as described in claim 1, characterized in that, The cooling device also includes a copper pipe and an angle valve. The copper pipe is located between the angle valve and the cooling tee. The angle valve is connected to the cooling pipeline of the centrifugal compressor.

5. The cooling device as described in claim 1, characterized in that, The cooling device also includes a copper pipe and an angle valve. The copper pipe is located between the angle valve and the solenoid valve, and the angle valve is connected to the cooling pipeline of the centrifugal compressor.

6. The cooling device as claimed in claim 1, characterized in that, The cooling device also includes a condenser, which is connected to the cooling inlet, through which coolant flows into the cooling inlet.

7. The cooling device as claimed in claim 1, characterized in that, The cooling device also includes an evaporator, which is connected to the cooling inlet and outlet, and the coolant flows into the evaporator through the cooling outlet.

8. A centrifugal compressor, characterized in that, The centrifugal compressor includes a cooling device as described in any one of claims 1-7.

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