Compressor shell structure and compressor cooling system

Abstract

The invention discloses a compressor shell structure and a compressor cooling system, and relates to the field of compressor structures and cooling, the compressor shell structure comprises a shell body outside a compressor, and the upper portion and the lower portion of the shell body are provided with an upper cover and a lower cover respectively; cooling channels are formed between the upper cover and the machine shell body and between the lower cover and the machine shell body respectively, the internal structure of each cooling channel is of a snakelike groove structure, a compressor inlet and a compressor outlet are formed in the machine shell body, and cooling inlets and cooling outlets of the cooling channels are formed in the upper cover and the lower cover respectively. The upper part and the lower part of the casing body are respectively provided with the cooling channels of the snakelike grooves capable of circulating the cooling liquid, so that the anti-blocking performance of the casing is improved, the structure can be directly arranged in the casing structure, the purpose of ensuring the cooling effect can be achieved, and the purpose of preventing blockage after scaling to lose the cooling effect can also be achieved.

Description

Technical Field

[0001] The invention relates to the field of compressor structure and cooling, and in particular to a compressor casing structure and a compressor cooling system. Background Art

[0002] The centrifugal compressor drives the impeller to rotate through the motor, which increases the pressure of natural gas. Among them, the impeller as a rotating part needs to be cooled, and the temperature of the natural gas at the outlet will also increase after compression, and it needs to be cooled. The temperature of the natural gas at the compressor outlet is too high, which may be higher than the rated temperature of the rear metering system, which reduces the accuracy of the rear metering. For example, the rated temperature of the gas ultrasonic flowmeter does not exceed 60°C. If the temperature of the flowing medium is too high, it will seriously affect the ultrasonic transduction process. In addition, the increase in temperature will increase the viscosity of natural gas, affecting subsequent storage and operation. Therefore, natural gas must be cooled after compression, usually required to be cooled to below 40°C.

[0003] The commonly used cooling methods now are mainly forced air cooling and liquid cooling. Among them, forced air cooling uses a blower to cool the gas, which is usually suitable for occasions in northern regions where the temperature is not high in summer. For the Sichuan and Chongqing regions, especially the Chongqing region, the surface temperature in summer is close to 50°C. Forced air cooling obviously cannot cool the compressed natural gas well. At this time, in addition to air cooling, a water cooling device is configured to work together to reduce the temperature of the natural gas after the compressor. The water cooling device is a liquid cooling method, including tubular cooling and spray cooling. In order to prevent scaling, the cooling medium is usually in indirect contact with the compressor casing, and the heat dissipation capacity of the system has a certain room for improvement. Therefore, each cooling method requires the design of a suitable cooling system to ensure good cooling effect and less power consumption.

[0004] In view of this, this application is hereby filed. Summary of the invention

[0005] The object of the present invention is to provide a compressor casing structure and a compressor cooling system. The compressor casing structure is configured with cooling channels with serpentine grooves at the upper and lower parts of the casing body respectively, through which the coolant can circulate. This solves the problem of low heat dissipation effect due to indirect contact between the coolant and the compressor casing in order to prevent scaling in the existing liquid cooling technology.

[0006] An embodiment of the present invention provides a compressor casing structure, which is implemented through the following scheme: it includes a casing body outside the compressor, an upper cover and a lower cover are respectively provided at the upper and lower parts of the casing body, cooling channels are respectively formed between the upper cover and the lower cover and the casing body, the internal structure of the cooling channel is a serpentine groove structure, a compressor inlet and a compressor outlet are provided on the casing body, and a cooling inlet and a cooling outlet of the cooling channel are provided on the upper cover and the lower cover.

[0007] Preferably, gaskets are provided between the upper cover, the lower cover and the casing body.

[0008] In order to better achieve the above-mentioned purpose, an embodiment of the present invention also provides a compressor cooling system, including a compressor and a compressor casing structure arranged outside the compressor, the compressor casing structure is a compressor casing structure provided above, and also includes a cooling tower, a water storage tank, a circulating water pump and a PC-end controller; wherein, the cooling inlet is connected to the cooling tower, the cooling tower is connected to the water storage tank, the water storage tank is connected to the circulating water pump, and the circulating water pump is connected to the cooling outlet to form a closed-loop cooling main circuit; a channel temperature sensor is arranged in the cooling channel, and the channel temperature sensor and the circulating water pump are connected to the PC-end controller; a flow meter is arranged on the cooling main circuit, and the flow meter is connected to the PC-end controller.

[0009] Preferably, a circulating water purifier is connected to the cooling main path between the water storage tank and the circulating water pump.

[0010] Preferably, the water storage tank is provided with a feed water inlet, and the feed water inlet is connected to a feed water purifier.

[0011] Preferably, a first bypass pipe connected in parallel with the circulating water purifier is provided between the water storage tank and the circulating water pump, a first bypass control valve is provided on the first bypass pipe, and circulating water purification control valves are provided on the cooling main circuits on both sides of the circulating water purifier.

[0012] Preferably, a second bypass pipe connected in parallel with the water tank is provided between the cooling tower and the circulating water purifier, a second bypass control valve is provided on the second bypass pipe, and water tank control valves are provided on both side ring cooling main circuits beside the water tank.

[0013] Preferably, cooling tower temperature sensors are provided on the cooling main circuits on both sides of the cooling tower, compressor temperature sensors and pressure sensors are provided on the cooling main circuits on both sides of the compressor casing, the cooling tower temperature sensors, compressor temperature sensors and pressure sensors are respectively connected to the PC-end controller, and compressor control valves are provided on the cooling main circuits on both sides of the compressor casing.

[0014] Preferably, a water level sensor is provided in the water tank, and the water level sensor is connected to the PC-side controller.

[0015] Preferably, a make-up water control valve is provided next to the make-up water inlet, the make-up water control valve is a solenoid valve, and the make-up water control valve is connected to the PC-end controller.

[0016] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects:

[0017] 1. A compressor casing structure provided by an embodiment of the present invention comprises cooling channels with serpentine grooves for circulating coolant respectively arranged at the upper and lower parts of the casing body. The shape of the serpentine groove structure can reduce the deposition of sediments or impurities in the channel while increasing the heat exchange contact area between the cooling channel and the compressor, so that heat can be more effectively transferred from the compressor to the coolant in the cooling channel, and the heat is taken away by the flow of liquid to form a cycle. In addition, due to the design of the serpentine groove, the flow of the coolant in the channel becomes more complicated, which will lead to the formation of more turbulence, thereby increasing the efficiency of heat transfer and cooling. By directly arranging this structure inside the casing structure, it is possible to ensure the cooling effect of direct contact and prevent clogging after scaling, thereby preventing the loss of cooling effect.

[0018] 2. A compressor cooling system provided in an embodiment of the present invention aims to make better use of the cooling effect of the compressor casing structure, connect the compressor casing structure with other equipment to form a closed-loop cooling main circuit, realize the circulation of cooling liquid, and control the entire system through a PC controller. A channel temperature sensor is set to monitor the temperature in the cooling channel, and the flow rate of the coolant is controlled by a flow meter to achieve the purpose of efficient cooling.

[0019] 3. A compressor cooling system provided by an embodiment of the present invention purifies the cooling liquid by setting a circulating water purifier or a feed water purifier to reduce the content of impurities or inorganic salts of scale components in the cooling liquid. After the purified cooling liquid flows through the cooling channel, scale will no longer form to block the cooling channel. At the same time, a first bypass pipe and a second bypass pipe are respectively set at the water storage tank and the circulating water purifier, which can realize the inspection and maintenance of the circulating water purifier and the water storage tank without stopping the machine, thereby ensuring a continuous and stable cooling effect.

[0020] In general, an embodiment of the present invention provides a compressor casing structure, which increases its anti-clogging performance by respectively arranging cooling channels with serpentine grooves that can circulate coolant on the upper and lower parts of the casing body. This structure can be directly arranged inside the casing structure, which can not only achieve the purpose of ensuring the cooling effect, but also achieve the purpose of preventing clogging after scaling and loss of cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the isometric structure of a compressor casing provided by an embodiment of the present invention;

[0023] Figure 2 A rear view of a compressor casing provided by an embodiment of the present invention;

[0024] Figure 3 A full cross-sectional view of a compressor casing provided by an embodiment of the present invention;

[0025] Figure 4 A cross-sectional view of a local structure of a cooling pipe provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a compressor cooling system provided in an embodiment of the present invention.

[0027] Marks and corresponding parts names in the attached drawings:

[0028] 1-upper cover, 2-lower cover, 3-compressor inlet, 4-compressor outlet, 5-cooling inlet, 6-cooling outlet, 7-gasket, 8-cooling tower, 9-water storage tank, 10-circulating water pump, 11-PC end controller, 12-flow meter, 13-circulating water purifier, 14-feed water purifier, 15-first bypass pipeline, 16-first bypass control valve, 17-circulating water purification control valve, 18-second bypass pipeline, 19-second bypass control valve, 20-water storage tank control valve, 21-cooling tower temperature sensor, 22-compressor temperature sensor, 23-pressure sensor, 24-compressor control valve, 25-water level sensor, 26-feed water control valve, 27-cooling channel. DETAILED DESCRIPTION

[0029] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Example

[0034] like Figure 1-4 As shown, an embodiment of the present invention provides a compressor casing structure, including a casing body outside the compressor, that is, this structure is wrapped and arranged outside the compressor, and is in contact with the compressor. During the operation of the compressor, the heat can be transferred to the casing body. An upper cover 1 and a lower cover 2 are respectively provided at the upper and lower parts of the casing body, and cooling channels 27 are respectively formed between the upper cover 1 and the lower cover 2 and the casing body. The cooling channel 27 can be connected to a pipeline, and cooling liquid is introduced into the cooling channel 27 through the pipeline to cool the compressor. By providing the upper cover 1 and the lower cover 2, the internal cooling channel 27 can be inspected and processed, including descaling, etc., and two cooling channels 27 are provided at the upper and lower parts, so that the compressor can be cooled and cooled in all directions.

[0035] The internal structure of the cooling channel 27 is a serpentine groove structure. The serpentine groove structure increases the contact area between the wall of the cooling channel 27 and the compressor, so that the heat of the compressor can be more effectively transferred to the coolant, and the heat can be transferred more quickly and more effectively, which helps to maintain the temperature of the compressor equipment within an acceptable range. At the same time, the shape of the serpentine groove structure can reduce the deposition of sediments or impurities in the coolant in the cooling channel 27. Therefore, compared with the straight channel, the serpentine groove structure has better anti-clogging performance. Clogging will reduce the efficiency of the cooling channel 27 and increase maintenance costs. The flow trajectory of the coolant in the cooling channel 27 will also become more complicated, which will cause more turbulence to form, thereby increasing the efficiency of heat transfer and cooling. That is, compared with the traditional straight cooling channel 27, the serpentine groove structure can increase the length of the cooling channel 27, thereby increasing the cooling time. In this way, the coolant has more time to absorb heat, thereby improving the cooling efficiency.

[0036] The casing body is provided with a compressor inlet 3 and a compressor outlet 4, and the upper cover 1 and the lower cover 2 are both provided with a cooling inlet 5 and a cooling outlet 6 of the cooling channel 27. During operation, the substance to be compressed enters from the compressor inlet 3 and is sent into the compressor, and is sent out through the compressor outlet 4 after being compressed. For ease of understanding, in the present invention, the substance to be compressed is natural gas. Of course, in other embodiments, other fluids can be selected for compression. The coolant enters the cooling channel 27 through the cooling inlet 5, and the coolant cools the internal compressor through the wall of the cooling channel 27 in the cooling channel 27, and then flows out through the cooling outlet 6. As a preferred embodiment of the present invention, the compressor inlet 3 and the cooling outlet 6 are arranged in the same direction on the left and right, and the compressor outlet and the cooling inlet 5 are arranged in the same direction on the left and right. This structure can make the coolant and the substance to be compressed flow in opposite directions during cooling, and the cooling effect is better. Of course, in other embodiments of the present invention, the flow direction can also be set to be the same, as long as a sufficient cooling effect can be achieved.

[0037] Furthermore, a gasket 7 is provided between the upper cover 1, the lower cover 2 and the casing body, and the gasket 7 can increase the airtightness between the upper cover 1, the lower cover 2 and the casing body and reduce the loss of coolant. In the present invention, the upper cover 1 and the lower cover 2 are fixed to the casing by bolts distributed along the cooling fluid channel. Of course, in other embodiments, the upper cover 1 and the lower cover 2 can also be fixed by a flip-cover type or other method, as long as the upper cover 1 and the lower cover 2 can be stably closed and opened to ensure the airtightness of the cooling channel 27.

[0038] In order to achieve a better cooling effect of the compressor, another embodiment of the present invention further provides a compressor cooling system, such as Figure 5 As shown, it includes a compressor and a compressor casing structure arranged outside the compressor, the compressor casing structure is the compressor casing structure provided in the above embodiment, and the compressor cooling system of this embodiment also includes a cooling tower 8, a water storage tank 9, a circulating water pump 10 and a PC-end controller 11; wherein, the cooling outlet 6 is connected to the cooling tower 8, the cooling tower 8 is connected to the water storage tank 9, the water storage tank 9 is connected to the circulating water pump 10, and the circulating water pump 10 is connected to the cooling inlet 5 to form a closed-loop cooling main circuit; a channel temperature sensor is arranged in the cooling channel 27, and the channel temperature sensor and the circulating water pump 10 are connected to the PC-end controller 11; a flow meter 12 is arranged on the cooling main circuit, and the flow meter 12 is connected to the PC-end controller 11.

[0039] Specifically, an embodiment of the present invention connects the above embodiment to a closed-loop cooling main circuit to realize a circulating cooling system, and can manage and control the cooling process of the compressor to ensure that the equipment operates within a stable temperature range and improve the efficiency and life of the equipment. More specifically, the cooling tower 8 is a device for cooling the coolant, and the coolant is usually dissipated by air to ensure that the coolant entering the cooling channel 27 has a sufficient cooling effect. At the same time, the existence of the cooling tower 8 can ensure that the entire system circulates the coolant, because although the coolant passing through the cooling channel 27 cools the compressor, the temperature of the coolant itself will increase. At this time, the coolant flowing out of the cooling outlet 6 needs to be cooled by the cooling tower 8 before being recycled.

[0040] The water storage tank 9 is used to store cold liquid to ensure that the entire cooling system has enough coolant to provide. The circulating water pump 10 is responsible for conveying the coolant to ensure the circulation of the coolant in the entire cooling system. The PC-side controller 11 is the central control unit of the cooling system, responsible for monitoring and adjusting the operating status of the cooling system. Usually, it receives data from the sensor and the flow meter 12, and controls the speed of the circulating water pump 10 and the operation of the cooling system according to preset parameters. The sensor installed in the cooling channel 27 is used to monitor the temperature in the channel in real time. By transmitting the temperature data to the PC-side controller 11, the system can adjust the flow and temperature of the cooling medium as needed to keep the compressor within a safe operating temperature range. The flow meter 12 is used to measure the flow of the cooling medium in the circulating water pump 10. By monitoring the flow, the system can ensure that an appropriate amount of cold liquid is delivered to the compressor casing when necessary to meet the cooling needs.

[0041] Furthermore, a circulating water purifier 13 is connected to the main cooling circuit between the water storage tank 9 and the circulating water pump 10, and its function is to purify and treat the circulating water to ensure that the water quality remains good during the circulation process, and to prevent impurities, sediments or microorganisms in the water from adversely affecting the cooling system and clogging the cooling channel 27. This can extend the life of the cooling system, reduce maintenance costs, and ensure the stable operation of the equipment.

[0042] Furthermore, a replenishing water inlet is provided on the water storage tank 9, and the replenishing water inlet is connected to a replenishing water purifier 14. Specifically, a replenishing water inlet is provided on the water storage tank 9, and fresh coolant is replenished by connecting to the replenishing water purifier 14. Such a configuration can ensure that the cooling system always has sufficient water supply, and the replenishing water is processed by the purifier to ensure that the replenished water quality meets the requirements and will not cause adverse effects on the cooling system. It should be noted that the functions of the circulating water purifier 13 and the replenishing water purifier 14 may include one or more of the functions of filtering, disinfecting, and regulating water quality. By filtering, suspended matter, impurities, sediment and other solid particles can be removed to ensure the cleanliness of the coolant; at the same time, ultraviolet light or chemical disinfectants can be used to disinfect the coolant to kill bacteria, viruses and other microorganisms therein to ensure the sanitation and safety of the coolant; the pH value and chemical composition of the coolant can also be adjusted by adjusting the addition of chemical agents to prevent corrosion and scale formation. In the present invention, since the coolant in the circulating water purifier 13 is purified by the feed water purifier 14, the purification function of the circulating water purifier 13 may not have the filtering function. In actual operation, it can be adjusted according to the actual situation. The circulating water purifier 13 and the feed water purifier 14 can also be set up one by one or both at the same time, as long as it is ensured that the operation of the cooling system is not affected or the cooling channel 27 is blocked.

[0043] Furthermore, a first bypass pipe 15 connected in parallel with the circulating water purifier 13 is provided between the water storage tank 9 and the circulating water pump 10, a first bypass control valve 16 is provided on the first bypass pipe 15, and circulating water purification control valves 17 are provided on both sides of the cooling main roads beside the circulating water purifier 13. Through this structure, the cooling system can adjust the use of the circulating water purifier 13 as needed to adapt to different working conditions. That is, when the purifier needs to be quickly started or maintained, the first bypass control valve 16 can be opened to allow the coolant to bypass the circulating water purifier 13 to ensure that the cooling system is still operating normally.

[0044] Furthermore, a second bypass pipe 18 connected in parallel with the water tank 9 is provided between the cooling tower 8 and the circulating water purifier 13, a second bypass control valve 19 is provided on the second bypass pipe 18, and a water tank control valve 20 is provided on both sides of the ring cooling main circuit beside the water tank 9. Through this structure, the cooling system can adjust the use of the water tank 9 as needed. When the water tank 9 needs to be quickly started or maintained, the second bypass control valve 19 can be opened to close the water tank 9 to ensure that the cooling system is still operating normally.

[0045] Further, cooling tower temperature sensors 21 are provided on the cooling main roads on both sides of the cooling tower 8, compressor temperature sensors 22 and pressure sensors 23 are provided on the cooling main roads on both sides of the compressor casing, and the cooling tower temperature sensors 21, the compressor temperature sensors 22 and the pressure sensors 23 are connected to the PC-side controller 11 respectively, and compressor control valves 24 are provided on the cooling main roads on both sides of the compressor casing. Specifically, the cooling tower temperature sensor 21 is used to monitor the inlet and outlet coolant temperatures of the cooling tower 8 in real time, so that the system can understand the working state of the cooling tower 8 so as to adjust it as needed. The compressor temperature sensor 22 is used to monitor the temperature of the compressor in real time to ensure that the compressor operates within a safe operating temperature range. If the temperature exceeds the preset range, the controller can take corresponding measures, such as adjusting the coolant flow rate or increasing the working efficiency of the cooling tower 8, to reduce the compressor temperature. The pressure sensor 23 is used to monitor the pressure of the coolant around the compressor in real time so that the PC-side controller 11 can understand the cooling of the compressor. If the pressure is abnormally high, it may mean that the cooling effect of the coolant is not good, that is, the temperature of the coolant entering the cooling channel 27 is too high, and corresponding measures need to be taken to ensure the normal operation of the cooling system. The compressor control valve 24 is used to adjust the flow of coolant into the cooling channel 27 to control the cooling efficiency of the compressor. By adjusting the opening degree of these control valves, the operating temperature and cooling state of the compressor can be ensured to be within the optimal range. Through the combination of the above sensors and control switches, the cooling system of the present invention can monitor and adjust the cooling process in real time to improve the cooling efficiency, extend the life of the equipment, and ensure that the equipment operates in a stable working state.

[0046] Furthermore, a water level sensor 25 is provided in the water tank 9, and the water level sensor 25 is connected to the PC-side controller 11. The water level sensor 25 is used to measure the liquid level of the coolant in the water tank 9. By connecting to the PC-side controller 11, the liquid level in the water tank 9 will be monitored in real time, and the corresponding liquid level data will be fed back to the control system. If the liquid level is too low, it may mean that the coolant is insufficient. At this time, the PC-side controller 11 may take corresponding measures, such as adjusting the working speed of the circulating water pump 10 or opening the first bypass control valve 16, to maintain the normal operation of the cooling system. Conversely, when the water level sensor 25 detects that the liquid level is too high, the PC-side controller 11 may take corresponding measures, such as reducing the working speed of the circulating water pump 10 or closing the first bypass control valve 16, to prevent the water tank 9 from overflowing.

[0047] Furthermore, a make-up water control valve 26 is provided next to the make-up water inlet, and the make-up water control valve 26 is a solenoid valve, and the make-up water control valve 26 is connected to the PC-end controller 11. This structure is used to control the coolant supply flow rate, and when the PC-end controller 11 sends a signal, the make-up water control valve 26 will open or close, thereby controlling the coolant supply amount.

[0048] When the compressor is working, the cooling system is started, and the coolant first passes through the compressor temperature sensor 22 and the pressure sensor 23 outside the compressor casing, and then cools the compressor through the cooling channel 27 on the compressor casing side. The compressor temperature sensor 22 records the temperature change of the coolant in the process. The coolant after cooling the compressor flows from the temperature sensor and the pressure sensor 23 to the cooling tower 8 from the cooling main path. The coolant temperature is measured by the cooling tower temperature sensor 21 outside the cooling tower 8. Then the coolant enters the cooling tower 8 to be cooled and cooled so that it regains its cooling capacity. After the coolant flows out of the cooling tower 8, its temperature is measured by the cooling tower temperature sensor 21, and then it flows into the water tank 9. The coolant flowing out of the water tank 9 is removed of impurities by the circulating water purifier 13 to reduce the risk of scaling. After being detected by the water quality detection sensor and qualified, it flows into the circulating water pump 10 for pressurization, and the whole cycle is completed after being measured by the flow meter 12. The water storage tank 9 and the circulating water purifier 13 are provided with a bypass pipeline, so that the cooling system can maintain continuous operation when the water storage tank 9 and the circulating water purifier 13 are inspected and maintained. When using the bypass pipeline, the valve on the bypass pipeline needs to be opened first and then the valve on the main pipeline is closed. The PC end records the data generated by the sensor during the operation of the compressor cooling equipment and regulates the solenoid valve and the circulating water pump 10 to a certain extent.

[0049] The embodiment of the present invention realizes efficient cooling of the compressor, utilizes the purifier to effectively remove impurities in the coolant, reduces the scaling risk of the system, and at the same time, performs better detection and control of the system through sensors and PC-side controller 11, greatly reduces labor costs and system failure rates, can effectively reduce system energy consumption, and has a certain inspiration effect on the design of future compressor cooling systems.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention.

Claims

1. A compressor casing structure, comprising a casing body outside the compressor, characterized in that: An upper cover (1) and a lower cover (2) are respectively arranged at the upper and lower parts of the casing body, and cooling channels (27) are respectively formed between the upper cover (1) and the lower cover (2) and the casing body, and the internal structure of the cooling channel (27) is a serpentine groove structure. A compressor inlet (3) and a compressor outlet (4) are arranged on the casing body, and a cooling inlet (5) and a cooling outlet (6) of the cooling channel (27) are both arranged on the upper cover (1) and the lower cover (2).

2. A compressor casing structure according to claim 1, characterized in that: Gaskets (7) are provided between the upper cover (1), the lower cover (2) and the casing body.

3. A compressor cooling system, comprising a compressor and a compressor casing structure arranged outside the compressor, wherein the compressor casing structure is a compressor casing structure according to claim 1 or 2, characterized in that: It also includes a cooling tower (8), a water storage tank (9), a circulating water pump (10) and a PC-side controller (11); The cooling outlet (6) is connected to a cooling tower (8), the cooling tower (8) is connected to a water storage tank (9), the water storage tank (9) is connected to a circulating water pump (10), and the circulating water pump (10) is connected to the cooling inlet (5), thereby forming a closed-loop cooling main circuit; A channel temperature sensor is provided in the cooling channel (27), and the channel temperature sensor and the circulating water pump (10) are connected to the PC-end controller (11); A flow meter (12) is provided on the cooling main circuit, and the flow meter (12) is connected to the PC-side controller (11).

4. A compressor cooling system according to claim 3, characterized in that: A circulating water purifier (13) is connected to the cooling main circuit between the water storage tank (9) and the circulating water pump (10).

5. A compressor cooling system according to claim 4, characterized in that: The water storage tank (9) is provided with a feed water inlet, and the feed water inlet is connected to a feed water purifier (14).

6. A compressor cooling system according to claim 4, characterized in that: A first bypass pipe (15) connected in parallel with the circulating water purifier (13) is provided between the water storage tank (9) and the circulating water pump (10), a first bypass control valve (16) is provided on the first bypass pipe (15), and circulating water purification control valves (17) are provided on both sides of the cooling main circuits beside the circulating water purifier (13).

7. A compressor cooling system according to claim 5, characterized in that: A second bypass pipe (18) connected in parallel with the water storage tank (9) is provided between the cooling tower (8) and the circulating water purifier (13); a second bypass control valve (19) is provided on the second bypass pipe (18); and water storage tank control valves (20) are provided on both side ring cooling main circuits next to the water storage tank (9).

8. A compressor cooling system according to claim 7, characterized in that: Cooling tower temperature sensors (21) are provided on the cooling main circuits on both sides of the cooling tower (8), compressor temperature sensors (22) and pressure sensors (23) are provided on the cooling main circuits on both sides of the compressor casing, the cooling tower temperature sensors (21), the compressor temperature sensors (22) and the pressure sensors (23) are respectively connected to the PC-end controller (11), and compressor control valves (24) are provided on the cooling main circuits on both sides of the compressor casing.

9. A compressor cooling system according to claim 3, characterized in that: A water level sensor (25) is arranged in the water storage tank (9), and the water level sensor (25) is connected to the PC-end controller (11).

10. A compressor cooling system according to claim 1, characterized in that: A make-up water control valve (26) is arranged beside the make-up water inlet. The make-up water control valve (26) is a solenoid valve. The make-up water control valve (26) is connected to the PC-end controller (11).

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