Cooling mechanism of air compressor

Abstract

The utility model discloses a cooling mechanism of an air compressor, which comprises an oil separation tank, a cooling mechanism, a control device, an air compressor, a first conveying mechanism and a temperature sensor, the air compressor, the first conveying mechanism and the temperature sensor are respectively and electrically connected with the control device, and the temperature sensor is arranged at an exhaust port of the air compressor and used for detecting exhaust temperature; the exhaust port of the air compressor is further connected with the oil-gas input end of the cooling mechanism, the oil-gas output end of the cooling mechanism is connected with the input end of the oil separation tank, and the output end of the oil separation tank is used for outputting compressed gas; the first conveying mechanism is used for conveying a cold source output by the cooling tower to the cooling mechanism; the cooling mechanism of the air compressor comprises the first conveying mechanism and the temperature sensor used for detecting the exhaust temperature, conveying of the refrigerating capacity can be adjusted along with the exhaust temperature, the cooling mechanism has the advantage of being high in working flexibility, the problem of cold source waste can be effectively avoided, and the working energy consumption of the cooling mechanism during working is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a cooling mechanism of an air compressor. Background Art

[0002] In order to ensure that the exhaust temperature of the air compressor always remains within a preset safe range during operation, a high-efficiency water cooling system is generally configured in the installation box of the air compressor. The core component of the water cooling system is a water cooler, which is used to precisely control the exhaust temperature of the air compressor to ensure the stable and efficient operation of the air compressor.

[0003] Generally speaking, the water cooler adopts a design with a constant water inlet volume, that is, no matter how the actual operating load of the air compressor fluctuates, the supply volume of the cooling water of the water cooler remains constant; however, in actual applications, the design with a constant water inlet volume has an energy waste problem. Specifically, when the air compressor is in a low-load operation state, the heat generated by it is relatively small, and the demand for cooling water naturally decreases accordingly. However, due to the constant water inlet volume of the water cooler, the cooling water tower connected to the cooler still needs to maintain full-power operation in this situation to provide unnecessary excessive cooling water, which not only reduces the cold source utilization rate of the cooling water tower but also causes double waste of electric energy and water resources.

[0004] It can be seen that the existing technology still needs to be improved. Summary of the Utility Model

[0005] In view of the above deficiencies of the existing technology, the purpose of the present utility model is to provide a cooling mechanism of an air compressor, which has the advantages of high working flexibility and low working energy consumption.

[0006] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A cooling mechanism of an air compressor includes an oil separation tank, a cooling mechanism, a control device, and an air compressor, a first conveying mechanism, and a temperature sensor that are respectively electrically connected to the control device. The temperature sensor is arranged at the exhaust port of the air compressor for detecting the exhaust temperature; the exhaust port of the air compressor is also connected to the oil-gas input end of the cooling mechanism, the oil-gas output end of the cooling mechanism is connected to the input end of the oil separation tank, and the output end of the oil separation tank is used for outputting compressed gas; the first conveying mechanism is used for conveying the cold source output by the cooling water tower to the cooling mechanism.

[0008] In the cooling mechanism of the air compressor described above, the first conveying mechanism includes a liquid supply pipe, a liquid return pipe, a first transfer pump and a first regulating valve that are respectively electrically connected to the control device. The input end of the liquid supply pipe and the output end of the liquid return pipe are respectively used to connect to a cooling water tower. The output end of the liquid supply pipe and the input end of the liquid return pipe are respectively connected to the cooling mechanism. The first transfer pump and the first regulating valve are respectively arranged on the liquid supply pipe.

[0009] In the cooling mechanism of the air compressor described above, the cooling mechanism includes a first cooler and a second cooler connected in series. The oil and gas input end of the first cooler is connected to the exhaust port of the air compressor. The cold source input end of the first cooler is connected to the output end of the liquid supply pipe. The cold source output end of the second cooler is connected to the input end of the liquid return pipe. The oil and gas output end of the second cooler is connected to the input end of the oil separation tank.

[0010] In the cooling mechanism of the air compressor described above, the first cooler and the second cooler have the same structure. A first air supply coil arranged horizontally and a first air supply coil arranged vertically are provided inside the first cooler. A second liquid supply coil arranged horizontally and a second air supply coil arranged vertically are provided inside the second cooler. The liquid supply pipe, the first liquid supply coil, the second liquid supply coil and the liquid return pipe are connected in sequence. The exhaust port of the air compressor, the first air supply coil, the second air supply coil and the input end of the oil separation tank are connected in sequence.

[0011] In the cooling mechanism of the air compressor described above, a second conveying mechanism electrically connected to the control device is further included. The exhaust port of the air compressor is connected to the oil and gas input end of the cooling mechanism through the second conveying mechanism.

[0012] In the cooling mechanism of the air compressor described above, the second conveying mechanism includes an air supply pipe, an oil filter, a second transfer pump and a second regulating valve that are respectively electrically connected to the control device. The exhaust port of the air compressor is connected to the oil and gas input end of the cooling mechanism through the air supply pipe. The second transfer pump, the second regulating valve and the oil filter are respectively arranged on the air supply pipe.

[0013] In the cooling mechanism of the air compressor described above, the air compressor includes a filtering device, an intake valve and a main unit. The main unit is electrically connected to the control device. The intake valve is arranged at the intake end of the main unit. The filtering device is arranged at the intake end of the intake valve.

[0014] In the cooling mechanism of the air compressor described above, an air supply pipe is further included. The input end of the air supply pipe is connected to the intake valve. The output end of the air supply pipe is connected to the air supply port of the oil separation tank.

[0015] In the cooling mechanism of the air compressor described above, there is also a vent pipe. The input end of the vent pipe is connected to the vent port of the oil separation tank, the output end of the vent pipe is connected to the intake valve, and a safety valve is provided on the vent pipe.

[0016] In the cooling mechanism of the air compressor described above, there is also an oil return mechanism. The input end of the oil return mechanism is connected to the output end of the oil separation tank, and the output end of the oil return mechanism is connected to the oil return port of the air compressor.

[0017] Beneficial effects:

[0018] The utility model provides a cooling mechanism for an air compressor, which includes a first conveying mechanism and a temperature sensor for detecting the exhaust temperature. It can automatically adjust the delivery of the refrigerating capacity according to the change of the exhaust temperature, so as to achieve precise control of the cooling effect, that is, dynamic adjustment of the refrigerating capacity. It has the advantages of high working flexibility, and can avoid the problems of excess or shortage of the refrigerating capacity, effectively prevent the waste of the cold source, and reduce the energy consumption of the cooling mechanism during operation. Description of the drawings

[0019] Figure 1 It is a system structure diagram of the cooling mechanism provided by the utility model.

[0020] Main element symbol description: 1 - oil separation tank, 21 - first cooler, 22 - second cooler, 3 - air compressor, 31 - filtering device, 32 - intake valve, 33 - main engine, 41 - first delivery pump, 42 - first regulating valve, 43 - supply pipe, 44 - return pipe, 51 - air delivery pipe, 52 - oil filter, 53 - second delivery pump, 54 - second regulating valve, 6 - supplementary air pipe, 7 - vent pipe, 71 - safety valve, 8 - oil return mechanism. Specific implementation manners

[0021] The utility model provides a cooling mechanism for an air compressor. To make the purpose, technical solution and effects of the utility model clearer and more definite, the following examples are given with reference to the drawings for further detailed description of the utility model.

[0022] In the description of the utility model, it should be understood that terms such as "installation" and "connection" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific situations.

[0023] Please refer to Figure 1, the present utility model provides a cooling mechanism for an air compressor, which includes an oil separation tank 1, a cooling mechanism, a control device, and an air compressor 3, a first conveying mechanism, and a temperature sensor that are electrically connected to the control device respectively. The temperature sensor is arranged at the exhaust port of the air compressor 3 for detecting the exhaust temperature; the exhaust port of the air compressor 3 is also connected to the oil and gas input end of the cooling mechanism, the oil and gas output end of the cooling mechanism is connected to the input end of the oil separation tank 1, and the output end of the oil separation tank 1 is used for outputting compressed gas; the first conveying mechanism is used for conveying the cold source output by the cooling tower to the cooling mechanism.

[0024] This application discloses a cooling mechanism for an air compressor, which includes a first conveying mechanism and a temperature sensor for detecting the exhaust temperature. It can automatically adjust the delivery of the cooling capacity according to the change of the exhaust temperature, so as to achieve precise control of the cooling effect, that is, it can realize the dynamic adjustment of the cooling capacity, has the advantage of high working flexibility, and can avoid the problem of excess or insufficient cooling capacity, effectively preventing the waste of the cold source, reducing the energy consumption of the cooling mechanism during operation, and improving the adaptability and reliability of the cooling mechanism during operation.

[0025] In this embodiment, the control device can be a single-chip microcomputer. It is prior art for the single-chip microcomputer to adjust the valve opening according to the exhaust temperature. Specifically, when the exhaust temperature exceeds the set value, the temperature sensor will send a signal to the control device, and the control device will adjust the working state of the first conveying mechanism according to the change of the exhaust temperature, increasing or decreasing the delivery of the cooling capacity to keep the exhaust temperature within a reasonable range.

[0026] Furthermore, the first conveying mechanism includes a liquid supply pipe 43, a liquid return pipe 44, a first conveying pump 41 and a first regulating valve 42 that are electrically connected to the control device respectively. The input end of the liquid supply pipe 43 and the output end of the liquid return pipe 44 are respectively used for connecting to the cooling tower, the output end of the liquid supply pipe 43 and the input end of the liquid return pipe 44 are respectively connected to the cooling mechanism, and the first conveying pump 41 and the first regulating valve 42 are respectively arranged on the liquid supply pipe 43.

[0027] In this embodiment, the first conveying pump 41 can be an existing liquid conveying pump, the first regulating valve 42 is a regulating ball valve, and the cooling tower is used for conveying the cold source to the cooling mechanism.

[0028] Further, the cooling mechanism includes a first cooler 21 and a second cooler 22 connected in series. The oil-gas input end of the first cooler 21 is connected to the exhaust port of the air compressor 3, and the cold source input end of the first cooler 21 is connected to the output end of the liquid supply pipe 43; the cold source output end of the second cooler 22 is connected to the input end of the liquid return pipe 44, and the oil-gas output end of the second cooler 22 is connected to the input end of the oil separation tank 1.

[0029] In this embodiment, the cooling mechanism includes two coolers connected in series. The oil and gas output by the air compressor 3 is first preliminarily cooled by the first cooler 21 and then enters the second cooler 22 for further cooling. The heat dissipation capabilities of the two coolers can be fully utilized, enabling the oil and gas to reach a lower temperature after passing through the entire system and meeting the refrigeration requirements under different working conditions, thereby enhancing the cooling effect and the working flexibility of the cooling mechanism, and enabling the cooling mechanism to adapt to a wider range of working conditions. In addition, by connecting the two coolers in series, the redundancy of the system can be increased to a certain extent. When one cooler fails or its performance deteriorates, the other cooler can still continue to operate to ensure the normal operation of the system.

[0030] Further, the first cooler 21 and the second cooler 22 have the same structure. The first cooler 21 is provided with a horizontally arranged first air supply coil and a vertically arranged first air supply coil, and the second cooler 22 is provided with a horizontally arranged second liquid supply coil and a vertically arranged second air supply coil; the liquid supply pipe 43, the first liquid supply coil, the second liquid supply coil, and the liquid return pipe 44 are connected in sequence; the exhaust port of the air compressor 3, the first air supply coil, the second air supply coil, and the input end of the oil separation tank 1 are connected in sequence.

[0031] In this embodiment, the first cooler 21 and the second cooler 22 have the same structure, simplifying the manufacturing and maintenance processes of the cooling mechanism, reducing the maintenance cost, and ensuring the stability and reliability of the system under different working conditions. Further, inside the cooler, the air supply coils and the liquid supply coils are arranged alternately, effectively increasing the contact area between the gas and the cooling medium, enabling the gas and the liquid to fully exchange heat during the flow process, and improving the heat exchange efficiency.

[0032] In this embodiment, the exhaust port of the air compressor 3, the first air supply coil, the second air supply coil, and the input end of the oil separation tank 1 are connected in sequence. The formed gas path system can introduce the high-temperature and high-pressure gas generated by the air compressor 3 into the cooler for cooling, and then separate the oil and water in the cooled gas through the oil separation tank 1, thereby ensuring the purity and stability of the output gas; and it can make the water in the oil and gas form water droplets, improving the oil and gas separation effect of the oil separation tank 1.

[0033] Furthermore, the cooling mechanism further includes a second conveying mechanism electrically connected to the control device. The exhaust port of the air compressor 3 is connected to the oil-gas input end of the cooling mechanism through the second conveying mechanism.

[0034] Furthermore, the second conveying mechanism includes an air delivery pipe 51, an oil filter 52, a second delivery pump 53 and a second regulating valve 54 that are respectively electrically connected to the control device. The exhaust port of the air compressor 3 is connected to the oil-gas input end of the cooling mechanism through the air delivery pipe 51. The second delivery pump 53, the second regulating valve 54 and the oil filter 52 are respectively arranged on the air delivery pipe 51.

[0035] In this embodiment, the second delivery pump 53 is a gas delivery pump, and the second regulating valve 54 is a regulating ball valve.

[0036] In this embodiment, by setting the second conveying mechanism, the smooth and efficient oil-gas circulation in the cooling mechanism can be optimized and ensured, and the precise delivery and regulation of oil and gas can be achieved. Specifically, the gas discharged from the air compressor 3 first enters the air delivery pipe 51. The second delivery pump 53 serves as a power source to deliver the gas into the cooling mechanism. The second regulating valve 54 precisely regulates parameters such as the flow rate and pressure of the oil and gas according to the instructions of the control device to meet the requirements under different working conditions, and cooperates with the cooling capacity delivered by the first conveying mechanism to ensure that the cooled gas can meet the working condition requirements. During the process of the gas being conveyed in the air delivery pipe 51, the oil filter 52 plays a role in filtering impurities in the oil and gas, and can effectively prevent the impurities in the oil and gas from damaging the cooling mechanism or related equipment, thereby ensuring the stable operation of the entire system.

[0037] Furthermore, the air compressor 3 includes a filtering device 31, an intake valve 32 and a main unit 33. The main unit 33 is electrically connected to the control device. The intake valve 32 is arranged at the intake end of the main unit 33, and the filtering device 31 is arranged at the intake end of the intake valve 32.

[0038] Furthermore, the cooling mechanism further includes a make-up air pipe 6. The input end of the make-up air pipe 6 is connected to the intake valve 32, and the output end of the make-up air pipe 6 is connected to the air make-up port of the oil separation tank 1.

[0039] In this embodiment, an air supply pipe 6 is provided to ensure that the pressure in the oil separation tank 1 can be effectively regulated under specific operating conditions of the air compressor 3, thereby maintaining the stability and efficiency of the system operation. Specifically, when the air compressor 3 is in the unloaded or no-load state, the pressure in the oil separation tank 1 may drop. A certain amount of gas can be supplied into the oil separation tank 1 through the air supply pipe 6 to maintain the internal pressure of the oil separation tank 1 within a suitable range, and to prevent the oil-gas mixture from flowing back into the intake valve 32 of the air compressor 3 due to too low pressure.

[0040] Furthermore, the cooling mechanism further includes a vent pipe 7. The input end of the vent pipe 7 is connected to the vent port of the oil separation tank 1, the output end of the vent pipe 7 is connected to the intake valve 32, and a safety valve 71 is provided on the vent pipe 7.

[0041] In this embodiment, the vent pipe 7 is provided. When the system pressure is too high, part of the gas is discharged through the vent pipe 7 to reduce the system pressure, thereby protecting the safety of the air compressor 3 and the entire gas circuit system. During the operation of the air compressor 3, due to the influence of various factors, the system pressure may suddenly increase. If the pressure is not controlled in time, it will damage components such as the air compressor 3 and the oil separation tank 1. Therefore, the vent pipe 7 is provided. When the system pressure exceeds the set value, the safety valve 71 on the vent pipe 7 automatically opens, and part of the gas is discharged into the atmosphere, thereby reducing the system pressure and ensuring the safe operation of the air compressor 3.

[0042] Furthermore, the cooling mechanism further includes an oil return mechanism 8. The input end of the oil return mechanism 8 is connected to the output end of the oil separation tank 1, and the output end of the oil return mechanism 8 is connected to the oil return port of the air compressor 3.

[0043] In this embodiment, by providing the oil return mechanism 8, the effective recycling of lubricating oil can be ensured, the waste and excessive consumption of lubricating oil are avoided, the reliability of the air compressor 3 during operation is improved, and the service life of the air compressor 3 is extended.

[0044] In this embodiment, the oil return mechanism 8 includes an oil return pipe and a third cooler. The oil outlet of the oil separation tank 1 is connected to the oil return port of the air compressor 3 through the oil return pipe and the third cooler. The third cooler is used to reduce the temperature of the lubricating oil output by the oil separation tank 1, to avoid too high temperature of the lubricating oil, which affects the lubrication effect and the machine life. The cooled lubricating oil is pumped into the air compressor again to continue to play its lubricating and cooling roles.

[0045] It is understandable that for those of ordinary skill in the art, equivalent substitutions or modifications can be made based on the technical solution and the inventive concept of the present utility model, and all such changes or substitutions should fall within the protection scope of the present utility model.

Claims

1. A cooling mechanism for an air compressor, characterized in that, It includes an oil separation tank, a cooling mechanism, a control device, an air compressor, a first conveying mechanism, and a temperature sensor that are electrically connected to the control device respectively. The temperature sensor is arranged at the exhaust port of the air compressor for detecting the exhaust temperature. The exhaust port of the air compressor is also connected to the oil and gas input end of the cooling mechanism. The oil and gas output end of the cooling mechanism is connected to the input end of the oil separation tank. The output end of the oil separation tank is used for outputting compressed gas. The first conveying mechanism is used for conveying the cold source output by the cooling tower to the cooling mechanism.

2. The cooling mechanism of an air compressor according to claim 1, characterized in that, The first conveying mechanism includes a liquid supply pipe, a liquid return pipe, a first conveying pump and a first regulating valve that are electrically connected to the control device respectively. The input end of the liquid supply pipe and the output end of the liquid return pipe are respectively used for connecting to the cooling water tower. The output end of the liquid supply pipe and the input end of the liquid return pipe are respectively connected to the cooling mechanism. The first conveying pump and the first regulating valve are respectively arranged on the liquid supply pipe.

3. The cooling mechanism of an air compressor according to claim 2, characterized in that, The cooling mechanism includes a first cooler and a second cooler connected in series. The oil and gas input end of the first cooler is connected to the exhaust port of the air compressor. The cold source input end of the first cooler is connected to the output end of the liquid supply pipe. The cold source output end of the second cooler is connected to the input end of the liquid return pipe. The oil and gas output end of the second cooler is connected to the input end of the oil separation tank.

4. The cooling mechanism of an air compressor according to claim 3, characterized in that, The structures of the first cooler and the second cooler are the same. A horizontally arranged first air supply coil and a vertically arranged first air supply coil are arranged in the first cooler. A horizontally arranged second liquid supply coil and a vertically arranged second air supply coil are arranged in the second cooler. The liquid supply pipe, the first liquid supply coil, the second liquid supply coil and the liquid return pipe are connected in sequence. The exhaust port of the air compressor, the first air supply coil, the second air supply coil and the input end of the oil separation tank are connected in sequence.

5. The cooling mechanism of an air compressor according to claim 1, characterized in that, It further includes a second conveying mechanism that is electrically connected to the control device. The exhaust port of the air compressor is connected to the oil and gas input end of the cooling mechanism through the second conveying mechanism.

6. The cooling mechanism of an air compressor according to claim 5, characterized in that, The second conveying mechanism includes an air supply pipe, an oil filter, a second conveying pump and a second regulating valve that are electrically connected to the control device respectively. The exhaust port of the air compressor is connected to the oil and gas input end of the cooling mechanism through the air supply pipe. The second conveying pump, the second regulating valve and the oil filter are respectively arranged on the air supply pipe.

7. The cooling mechanism of an air compressor according to claim 1, characterized in that, The air compressor includes a filtering device, an intake valve and a main engine. The main engine is electrically connected to the control device. The intake valve is arranged at the intake end of the main engine. The filtering device is arranged at the intake end of the intake valve.

8. The cooling mechanism of an air compressor according to claim 7, characterized in that, It further includes a supplementary air pipe. The input end of the supplementary air pipe is connected to the intake valve. The output end of the supplementary air pipe is connected to the air supplement port of the oil separation tank.

9. The cooling mechanism of an air compressor according to claim 7, characterized in that, It further includes a vent pipe. The input end of the vent pipe is connected to the air vent port of the oil separation tank. The output end of the vent pipe is connected to the intake valve. A safety valve is arranged on the vent pipe.

10. The cooling mechanism of an air compressor according to claim 1, characterized in that, It further includes an oil return mechanism. The input end of the oil return mechanism is connected to the output end of the oil separation tank, and the output end of the oil return mechanism is connected to the oil return port of the air compressor.

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