Integrated novel air-cooled variable-frequency screw air compression station

Abstract

The utility model relates to the technical field of variable-frequency screw compressor equipment, in particular to an integrated novel air-cooled variable-frequency screw air compression station which comprises a driving system, an air inlet system, an oil way system, a cooling system, a cold drying system, a waste heat recovery system, an electrical control system, a storage and metering system and a box body. The box body is divided into a cold area and a hot area for isolation, the space structure layout is integrated and compact, the appearance design adopts a container form, all parts are integrally installed, high-quality compressed air can be provided, the system energy efficiency is high in usability, the space design structure is compact, and the integrated air compression station is safe, reliable and convenient to use and install. The air compression station is small in occupied area and convenient to operate, carry and install.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency screw compressor equipment, in particular to an integrated novel air-cooled variable frequency screw air compressor station. Background Art

[0002] Screw air compressors have gone through many years of development and have been widely used in the field of air compressors. They have the characteristics of stable and efficient operation, low vibration, low noise, easy operation, few wearing parts and excellent reliability.

[0003] Its variable frequency screw compressor is reliable and efficient, and has the characteristics of high system "playability", occupying a mainstream product position in air compressors.

[0004] However, the current air compressor system is composed of multiple devices, which occupies a large area, is inconvenient to operate, and is not easy to transport and install. Utility Model Content

[0005] The purpose of the utility model is to provide an integrated new type of air-cooled variable frequency screw air compressor station, which solves the problems in the prior art that the current air compressor system is composed of multiple devices, occupies a large area, is inconvenient to operate, and is not easy to carry and install.

[0006] To achieve the above-mentioned objectives, the utility model provides an integrated new type of air-cooled variable frequency screw air compressor station, including a drive system, an air intake system, an oil system, a cooling system, a cold drying system, a waste heat recovery system, an electrical control system, a storage and metering system and a box body. The drive system is arranged inside the box body, the air intake system is connected to the box body and is located above the drive system, the oil system is connected to the inside of the box body, the cooling system is connected to the inside of the box body and is located on the right side of the oil system, the cold drying system is connected to the inside of the box body and is located on the right side of the cooling system, the electrical control system is arranged inside the box body, and the storage and metering system is connected to the box body and is located at the right end of the box body.

[0007] Wherein, the air intake system includes an air filter and an air intake valve, and the air intake valve is fixedly connected to the air filter.

[0008] Among them, the drive system includes a coupling, a permanent magnet variable frequency motor and a host, the host is fixedly connected to the intake valve, one end of the coupling is fixedly connected to the host, and the other end of the coupling is fixedly connected to the permanent magnet variable frequency motor.

[0009] Among them, the oil circuit system includes a safety valve, a pressure gauge, a first drain valve and a pressure valve, an oil and gas cylinder, a temperature control valve, a first oil filter, a second oil filter, a waste heat recovery device, a ball valve and a one-way valve. The air intake system also includes a control block, a first solenoid valve and a capacity adjustment valve. The control block is arranged on the air intake valve, the oil and gas cylinder is fixedly connected to the main engine, the safety valve is arranged on the oil and gas cylinder, the pressure gauge is arranged on the oil and gas cylinder, the first drain valve is arranged on the oil and gas cylinder, the pressure valve is fixedly connected to the oil and gas cylinder, and the temperature control valve is respectively connected to The oil and gas cylinder is connected to the ball valve, one end of the first oil filter and the second oil filter are fixedly connected to the main engine respectively, the other end of the first oil filter and the second oil filter are fixedly connected to the temperature control valve respectively, the two ends of the one-way valve are fixedly connected to the oil and gas cylinder and the main engine respectively, the two ends of the control block are fixedly connected to the oil and gas cylinder and the main engine respectively, one end of the first solenoid valve is fixedly connected to the oil and gas cylinder, the other end of the first solenoid valve is fixedly connected to the control block, and the capacity adjustment valve is fixedly connected to the intake valve.

[0010] Among them, the cooling system includes an aftercooler, an oil cooler, an aftercooling fan and an oil cooling fan. The aftercooling fan and the oil cooling fan are respectively arranged on the aftercooler and the oil cooler. One end of the aftercooler is fixedly connected to the pressure valve, and the other end of the aftercooler is fixedly connected to the oil cooler. The ball valve is connected to the oil cooler and the waste heat recovery device respectively.

[0011] Among them, the integrated new air-cooled variable frequency screw air compressor station also includes an air-water separator and a filter. One end of the air-water separator is fixedly connected to the aftercooler, and the other end of the air-water separator is fixedly connected to the filter.

[0012] In which, the cold drying system includes a refrigerant compressor, an oil mist separator, a gas-liquid separator, a liquid reservoir, an electronic expansion valve, a pre-cooling evaporator, a condensing fan, a second solenoid valve, a condenser and a plurality of zero-gas consumption drain valves. The pre-cooling evaporator is fixedly connected to the filter, the electronic expansion valve is fixedly connected to the pre-cooling evaporator, the two ends of the liquid reservoir are respectively fixedly connected to the electronic expansion valve and the condenser, the condensing fan is arranged on the condenser, the two ends of the second solenoid valve are respectively fixedly connected to the pipe of the electronic expansion valve and the pipe of the condenser, the oil mist separator is fixedly connected to the condenser, the two ends of the refrigerant compressor are respectively fixedly connected to the oil mist separator and the gas-liquid separator, the gas-liquid separator is fixedly connected to the pre-cooling evaporator, and the plurality of zero-gas consumption drain valves are respectively fixedly connected to the pre-cooling evaporator, the gas-water separator and the filter.

[0013] Wherein, the electrical control system includes an electrical control box and a ventilation fan, and the ventilation fan is arranged on the electrical control box.

[0014] In which, the waste heat recovery system includes a water pump, an insulated water tank, a second sewage valve, a valve, a water supply valve and a water flow meter. One end of the water pump is fixedly connected to the waste heat recovery device, and the other end of the water pump is fixedly connected to the insulated water tank. The second sewage valve is fixedly connected to the insulated water tank, the valve is fixedly connected to the insulated water tank, the water supply valve is fixedly connected to the insulated water tank, and the water flow meter is arranged on the pipeline between the waste heat recovery device and the insulated water tank.

[0015] Wherein, the storage and metering system includes an air storage tank and an air flow meter, one end of the air storage tank is fixedly connected to the pre-cooling evaporator, and the other end of the air storage tank is fixedly connected to the air flow meter.

[0016] The utility model is an integrated new type of air-cooled variable frequency screw air compressor station. The box body is divided into a cold zone and a hot zone for isolation. The spatial structure layout is tightly integrated and the appearance design adopts a container form. By integrating and installing various components, it can provide higher quality compressed air, higher system energy efficiency and utilization, and a compact spatial design structure. It is safe, reliable, easy to use and install. By combining it into an integrated air compressor station, the air compressor station occupies a small area and is easy to operate, carry and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0018] Figure 1 It is the overall front view of the utility model.

[0019] Figure 2 It is the overall rear view of the utility model.

[0020] Figure 3 It is an overall top view of the utility model.

[0021] Figure 4 It is an overall flow chart of the present invention.

[0022] Figure 5 This utility model Figure 4 A magnified view of the local structure at point A.

[0023] Figure 6 This utility model Figure 4 A magnified view of the local structure at point B.

[0024] Figure 7 This utility model Figure 4 A magnified view of the local structure at point C.

[0025] Figure 8 This utility model Figure 4 A magnified view of the local structure at point D.

[0026] 1-air filter, 2-inlet valve, 3-coupling, 4-permanent magnet variable frequency motor, 5-host, 6-oil and gas cylinder, 7-safety valve, 8-pressure gauge, 9-first drain valve, 10-pressure valve, 11-aftercooler, 12-oil cooler, 13-aftercooling fan, 14-oil cooling fan, 15-gas-water separator, 16-filter, 17-pre-cooling evaporator, 18-air storage tank, 19-air flow meter, 20-check valve, 21-control block, 22-first solenoid valve, 23-capacity regulating valve, 24-temperature control valve, 25-first oil filter, 26-second oil filter, 27-ball valve, 28-waste heat recovery device, 29-water pump, 30-insulated water tank, 31-second drain valve, 32-valve, 33-water supply valve, 34-water flow meter, 35-electronic expansion valve, 36-liquid reservoir, 37-condenser, 38-condensing fan, 39-second solenoid valve, 40-oil mist separator, 41-refrigerant compressor, 42-gas-liquid separator, 43-zero gas consumption drain valve, 44-electrical control box, 45-ventilation fan, 46-drive system, 47-air intake system, 48-oil system, 49-cooling system, 50-cold and dry system, 51-waste heat recovery system, 52-electrical control system, 53-storage and metering system, 54-cabinet. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] See also Figures 1 to 8 ,in, Figure 1 This is the overall front view of the utility model. Figure 2 This is the overall rear view of the utility model. Figure 3 It is a top view of the entire utility model. Figure 4 It is the overall flow chart of the utility model. Figure 5 This utility model Figure 4 A magnified view of the local structure at point A, Figure 6 This utility model Figure 4 A magnified view of the local structure at point B. Figure 7 This utility model Figure 4 The enlarged view of the local structure at C, Figure 8 This utility model Figure 4 A magnified view of the local structure at point D.

[0029] The utility model provides an integrated new air-cooled variable frequency screw air compressor station, including a drive system 46, an air intake system 47, an oil system 48, a cooling system 49, a cold drying system 50, a waste heat recovery system 51, an electrical control system 52, a storage and metering system 53 and a box body 54. The drive system 46 is arranged inside the box body 54, the air intake system 47 is connected to the box body 54 and is located above the drive system 46, the oil system 48 is connected to the inside of the box body 54, the cooling system 49 is connected to the inside of the box body 54 and is located on the right side of the oil system 48, the cold drying system 50 is connected to the inside of the box body 54 and is located on the right side of the cooling system 49, the electrical control system 52 is arranged inside the box body 54, and the storage and metering system 53 is connected to the box body 54 and is located at the right end of the box body 54.

[0030] In this embodiment, the box body 54 is divided into cold zone and hot zone isolation, the spatial structure layout is tightly integrated, and the appearance design adopts the form of a container. By integrating and installing various components, it can provide higher quality compressed air, higher system energy efficiency and utilization, and a compact spatial design structure. It is safe, reliable, easy to use and install. By combining it into an integrated air compressor station, the air compressor station occupies a small area, is easy to operate, and is easy to carry and install.

[0031] Furthermore, the air intake system 47 includes an air filter 1 and an air intake valve 2 , and the air intake valve 2 is fixedly connected to the air filter 1 .

[0032] In this embodiment, the air filter 1 adopts a two-stage heavy-load high-efficiency air intake filter, the pleated filter element has a large filtering area, a plastic protective shell, high separation efficiency, a large dust holding capacity of the filter element, low pressure drop, the air flow intakes axially from the bottom, and has good sound insulation. The control valve plate of the intake valve 2 is a butterfly valve + check valve type. When the valve plate is opened, the air flow can flow downward vertically and evenly without obvious throttling resistance and sharp turns in the air flow direction. Therefore, the resistance is small. When the machine is shut down, the check valve plate is quickly closed under the action of the return closing force of the counterweight block and the oil and gas return force in the machine head, which can effectively prevent the problem of oil spitting during shutdown.

[0033] Furthermore, the drive system 46 includes a coupling 3, a permanent magnet variable frequency motor 4 and a host 5, the host 5 is fixedly connected to the intake valve 2, one end of the coupling 3 is fixedly connected to the host 5, and the other end of the coupling 3 is fixedly connected to the permanent magnet variable frequency motor 4.

[0034] In this embodiment, the permanent magnet variable frequency motor 4 drives the main machine 5 to be connected via the coupling 3, which can directly transmit higher torque and has high rotation efficiency. When the machine is shut down, the flexible connection of the rubber elastic body in the middle is used to buffer and unload the force; the permanent magnet variable frequency motor 4 and the main machine 5 are driven by the coupling 3 assembly and are protected by a central bracket body on the outside, which effectively prevents external objects from directly contacting the high-speed rotating coupling 3, and at the same time prevents the high-speed rotating coupling 3 assembly from flying out due to insufficient product quality and life, causing unnecessary safety accidents.

[0035] Furthermore, the oil circuit system 48 includes a safety valve 7, a pressure gauge 8, a first drain valve 9 and a pressure valve 10, an oil and gas cylinder 6, a temperature control valve 24, a first oil filter 25, a second oil filter 26, a waste heat recovery device 28, a ball valve 27 and a one-way valve 20. The intake system also includes a control block 21, a first solenoid valve 22 and a capacity adjustment valve 23. The oil and gas cylinder 6 is fixedly connected to the main engine 5. The safety valve 7 is provided on the oil and gas cylinder 6. The pressure gauge 8 is provided on the oil and gas cylinder 6. The first drain valve 9 is provided on the oil and gas cylinder 6. The pressure valve 10 is fixedly connected to the oil and gas cylinder 6. The ball valve 27 is connected to the oil cooler 12 and the waste heat recovery device 28 respectively. Then, the temperature control valve 24 is respectively connected to the oil and gas cylinder 6 and the ball valve 27, one end of the first oil filter 25 and the second oil filter 26 is respectively fixedly connected to the main engine 5, the other end of the first oil filter 25 and the second oil filter 26 is respectively fixedly connected to the temperature control valve 24, the two ends of the one-way valve 20 are respectively fixedly connected to the oil and gas cylinder 6 and the main engine 5, the two ends of the control block 21 are respectively fixedly connected to the oil and gas cylinder 6 and the main engine 5, one end of the first solenoid valve 22 is fixedly connected to the oil and gas cylinder 6, the other end of the first solenoid valve 22 is fixedly connected to the capacity adjustment valve 23, and the capacity adjustment valve 23 is fixedly connected to the intake valve 2.

[0036] In this embodiment, the speed at which the oil and gas mixture enters the oil and gas cylinder 6 is used to perform oil and gas cyclone separation. An oil baffle with a through hole is provided under the oil and gas cylinder 6 to allow the lubricating oil at both ends to communicate with each other and avoid the generation of vortexes during cyclonic separation. By opening the one-way valve 20, oil return is facilitated. The system temperature in the oil and gas cylinder 6 is regulated by the temperature control valve 24 to allocate the oil return route, which can be divided into two routes according to the different system temperatures; the first system temperature is room temperature and does not need to be cooled, and it directly enters the oil injection chamber through the oil filter; the second system temperature is high The temperature can be automatically controlled by the ball valve 27 depending on whether the user needs the waste heat recovery device 28; if required, the oil first passes through the waste heat recovery device 28, then passes through the oil cooler 12 for cooling, and after cooling to a certain temperature, passes through the first oil filter 25 and returns to the oil injection chamber; if not required, the oil directly passes through the oil cooler 12, and then passes through the first oil filter 25 and returns to the oil injection chamber; the purpose is to recycle the lubricating oil to regulate the system temperature, keep the system temperature stable, prevent the lubricating oil from precipitating water, reduce energy consumption, and increase energy efficiency utilization.

[0037] Furthermore, the cooling system 49 includes an aftercooler 11, an oil cooler 12, an aftercooling fan 13 and an oil cooling fan 14, the aftercooling fan 13 and the oil cooling fan 14 are respectively arranged on the oil cooler 12, one end of the aftercooler 11 is fixedly connected to the pressure valve 10, and the other end of the aftercooler 11 is fixedly connected to the oil cooler 12.

[0038] In this embodiment, an axial flow fan and an aluminum plate-fin cooler are used, and the aluminum plate-fin cooler has good thermal conductivity. The purpose is to regulate the system temperature and ensure the normal operation of the air compressor.

[0039] Furthermore, the integrated new air-cooled variable frequency screw air compressor station also includes an air-water separator 15 and a filter 16 . One end of the air-water separator 15 is fixedly connected to the aftercooler 11 , and the other end of the air-water separator 15 is fixedly connected to the filter 16 .

[0040] In this embodiment, the purpose of the gas-water separator 15 and the filter 16 is to remove oil and particulate water from the compressed air.

[0041] Furthermore, the cold drying system 50 includes a refrigerant compressor 41, an oil mist separator 40, a gas-liquid separator 42, a liquid reservoir 36, an electronic expansion valve 35, a pre-cooling evaporator 17, a condensing fan 38, a second solenoid valve 39, a condenser 37 and a plurality of zero-gas consumption drain valves 43, the pre-cooling evaporator 17 is fixedly connected to the filter 16, the electronic expansion valve 35 is fixedly connected to the pre-cooling evaporator 17, the two ends of the liquid reservoir 36 are respectively fixedly connected to the electronic expansion valve 35 and the condenser 37, the condensing fan 38 is set On the condenser 37, the two ends of the second solenoid valve 39 are fixedly connected to the pipes of the electronic expansion valve 35 and the pipes of the condenser 37, respectively. The oil mist separator 40 is fixedly connected to the condenser 37. The two ends of the refrigerant compressor 41 are fixedly connected to the oil mist separator 40 and the gas-liquid separator 42, respectively. The gas-liquid separator 42 is fixedly connected to the pre-cooling evaporator 17. The multiple zero-gas consumption drain valves 43 are fixedly connected to the pre-cooling evaporator 17, the gas-water separator 15 and the filter 16, respectively.

[0042] In this embodiment, the cold drying system 50 can make the compressed air have a lower dew point temperature, and the zero-gas consumption drainer can discharge the condensed water in time, so as to achieve a lower oil content and a lower dew point temperature of the compressed air. In addition, the gas-water separator 15 and the filter 16 can also prevent oil from entering the pre-cooling evaporator 17, which will reduce the heat exchange performance and increase energy consumption.

[0043] Furthermore, the electrical control system 52 includes an electrical control box 44 and a ventilation fan 45 , and the ventilation fan 45 is disposed on the electrical control box 44 .

[0044] In this embodiment, the electrical control system 52 is PLC-controlled, which can integrate and jointly regulate the screw air refrigerant compressor 41 and the cold and dry system 50, making the air compression station run more smoothly. The operation of each electrical component is controlled by the electrical control box 44, and the ventilation fan 45 cools and dissipates heat from the electrical control box 44.

[0045] Furthermore, the waste heat recovery system 51 includes a water pump 29, an insulated water tank 30, a second drain valve 31, a valve 32, a water replenishment valve 33 and a water flow meter 34, one end of the water pump 29 is fixedly connected to the waste heat recovery device 28, the other end of the water pump 29 is fixedly connected to the insulated water tank 30, the second drain valve 31 is fixedly connected to the insulated water tank 30, the valve 32 is fixedly connected to the insulated water tank 30, the water replenishment valve 33 is fixedly connected to the insulated water tank 30, and the water flow meter 34 is arranged on the pipeline between the waste heat recovery device 28 and the insulated water tank 30; the storage and metering system 53 includes an air storage tank 18 and an air flow meter 19, one end of the air storage tank 18 is fixedly connected to the pre-cooling evaporator 17, and the other end of the air storage tank 18 is fixedly connected to the air flow meter 19.

[0046] In this embodiment, when water needs to be discharged, the valve 32 is opened and the water pump 29 is started, so that the water in the insulated water tank 30 flows out, and the water flow can help the aftercooler 11 and the oil cooler 12 to cool down. The sewage and wastewater in the insulated water tank 30 can be discharged through the second drain valve 31. When the water flow in the insulated water tank 30 is insufficient, the water replenishment valve 33 can be opened to allow external water to flow into the insulated water tank 30. The water flow meter 34 allows the staff to observe the water flow in the insulated water tank 30.

[0047] When using the integrated new air-cooled variable frequency screw air compressor station of the utility model, when the integrated air compressor station starts working, first the driving system 46 is driven by the permanent magnet variable frequency motor through the coupling 3 to drive the screw air compressor male rotor to rotate, and the rotor meshing periodically changes the compression volume cavity to generate compressed air, and a certain pressure difference is formed between the air inlet of the main machine 5 and the external environment, so that the external air continues to flow into the main machine 5, and the air passes through the air filter 1 of the air intake system 47 to remove dust in the air and achieve a certain filtering accuracy; when the integrated air compressor station is loaded, its volume flow is mainly regulated by the speed, and in extreme cases The opening of the air inlet valve 2 can also be adjusted. When the machine is stopped, the check valve plate is quickly closed under the return of the counterweight to prevent the equipment from spitting oil. When the main engine 5 is running, the air enters the compression chamber and begins to be compressed. The cooling oil is sprayed in and mixed with the air through the rotor meshing. After compression, the temperature of the oil-gas mixture increases and is discharged into the oil-gas cylinder 6 of the oil-gas separation system. The speed at which the oil-gas mixture enters the oil-gas cylinder 6 is used to perform oil-gas cyclone separation in the oil-gas cylinder 6. After separation by the oil-gas separation system, the lubricating oil is cooled by the cooling system 49 and then re-enters the inside of the main engine 5 to participate in air compression. The compressed air passes through the most The small pressure valve 10 is transported to the gas-water separator 15 and the filter 16 at the rear end, and most of the liquid condensed water and residual oil therein are separated, filtered and discharged from the air compression station; the compressed air treated by the gas-water separator 15 and the filter 16 is transported to the cold drying system 50, and part of the water vapor and cooling oil vapor in the compressed air is condensed, separated and discharged from the air compression station and supplied to the rear end gas. The compressed air after the above filtration and separation (water, cooling oil) has met the preliminary use requirements of customers; or it can be subjected to air quality treatment again; the cooling system 49 is divided into cooling oil cooling and compressed air cooling As mentioned above, after the compression of the main engine 5 is completed, the temperature of the oil-gas mixture (cooling oil and air) rises, and the oil-gas separation system separates the compressed air. The compressed air is cooled and transported to the rear end through the aftercooler 11, and the cooling oil needs to be returned to the system for circulation. In order to ensure the stable operation of the air compression station, the cooling oil needs to be cooled to a suitable temperature through the oil cooler 12 to avoid high temperature in the air compression station. In the above cooling process, whether it is the cooling of compressed air or the cooling oil, it is necessary to dissipate the heat to the environment through the cooling medium (low-temperature medium), of which the heat of the cooling oil accounts for a huge proportion;To improve energy utilization, a waste heat recovery device 28 can be installed in the oil circuit system 48 to recover the heat from the cooling oil into another suitable heat carrier (e.g., water) for use in daily life, production, etc. When waste heat recovery is not required, the waste heat recovery device 28 can be controlled without affecting the normal operation of the air compression station. After the high-temperature lubricating oil passes through the waste heat recovery device 28, its heat dissipation is reduced. The system controls whether the oil cooler 12 dissipates heat again. The cooled lubricating oil is filtered by the first oil filter 25 and then returned to the main engine 5 to participate in the air compression process again.

[0048] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A new integrated air-cooled variable frequency screw air compressor station, characterized in that: It includes a drive system, an air intake system, an oil circuit system, a cooling system, a cold and dry system, a waste heat recovery system, an electrical control system, a storage and metering system and a box. The drive system is arranged inside the box, the air intake system is connected to the box and is located above the drive system, the oil circuit system is connected to the inside of the box, the cooling system is connected to the inside of the box and is located on the right side of the oil circuit system, the cold and dry system is connected to the inside of the box and is located on the right side of the cooling system, the electrical control system is arranged inside the box, and the storage and metering system is connected to the box and is located at the right end of the box.

2. The integrated new air-cooled variable frequency screw air compressor station according to claim 1 is characterized in that: The air intake system includes an air filter and an air intake valve, and the air intake valve is fixedly connected to the air filter.

3. The integrated new air-cooled variable frequency screw air compressor station according to claim 2 is characterized in that: The drive system includes a coupling, a permanent magnet variable frequency motor and a host, the host is fixedly connected to the intake valve, one end of the coupling is fixedly connected to the host, and the other end of the coupling is fixedly connected to the permanent magnet variable frequency motor.

4. The integrated new air-cooled variable frequency screw air compressor station according to claim 3 is characterized in that: The oil circuit system includes a safety valve, a pressure gauge, a first drain valve and a pressure valve, an oil and gas cylinder, a temperature control valve, a first oil filter, a second oil filter, a waste heat recovery device, a ball valve and a one-way valve. The air intake system also includes a control block, a first solenoid valve and a capacity adjustment valve. The control block is arranged on the air intake valve, the oil and gas cylinder is fixedly connected to the main engine, the safety valve is arranged on the oil and gas cylinder, the pressure gauge is arranged on the oil and gas cylinder, the first drain valve is arranged on the oil and gas cylinder, the pressure valve is fixedly connected to the oil and gas cylinder, and the temperature control valve is respectively connected to the The oil and gas cylinder is connected to the ball valve, one end of the first oil filter and the second oil filter are fixedly connected to the main engine respectively, the other end of the first oil filter and the second oil filter are fixedly connected to the temperature control valve respectively, the two ends of the one-way valve are fixedly connected to the oil and gas cylinder and the main engine respectively, the two ends of the control block are fixedly connected to the oil and gas cylinder and the main engine respectively, one end of the first solenoid valve is fixedly connected to the oil and gas cylinder, the other end of the first solenoid valve is fixedly connected to the control block, and the capacity adjustment valve is fixedly connected to the intake valve.

5. The integrated new air-cooled variable frequency screw air compressor station according to claim 4 is characterized in that: The cooling system includes an aftercooler, an oil cooler, an aftercooling fan and an oil cooling fan. The aftercooling fan and the oil cooling fan are respectively arranged on the aftercooler and the oil cooler. One end of the aftercooler is fixedly connected to the pressure valve, and the other end of the aftercooler is fixedly connected to the oil cooler. The ball valve is respectively connected to the oil cooler and the waste heat recovery device.

6. The integrated new air-cooled variable frequency screw air compressor station according to claim 5 is characterized in that: The integrated new air-cooled variable frequency screw air compressor station also includes an air-water separator and a filter. One end of the air-water separator is fixedly connected to the aftercooler, and the other end of the air-water separator is fixedly connected to the filter.

7. The integrated new air-cooled variable frequency screw air compressor station according to claim 6 is characterized in that: The cold-drying system includes a refrigerant compressor, an oil mist separator, a gas-liquid separator, a liquid reservoir, an electronic expansion valve, a pre-cooling evaporator, a condensing fan, a second solenoid valve, a condenser and a plurality of zero-gas consumption drain valves. The pre-cooling evaporator is fixedly connected to the filter, the electronic expansion valve is fixedly connected to the pre-cooling evaporator, the two ends of the liquid reservoir are respectively fixedly connected to the electronic expansion valve and the condenser, the condensing fan is arranged on the condenser, the two ends of the second solenoid valve are respectively fixedly connected to the pipe of the electronic expansion valve and the pipe of the condenser, the oil mist separator is fixedly connected to the condenser, the two ends of the refrigerant compressor are respectively fixedly connected to the oil mist separator and the gas-liquid separator, the gas-liquid separator is fixedly connected to the pre-cooling evaporator, and the plurality of zero-gas consumption drain valves are respectively fixedly connected to the pre-cooling evaporator, the gas-water separator and the filter.

8. The integrated new air-cooled variable frequency screw air compressor station according to claim 7 is characterized in that: The electrical control system includes an electrical control box and a ventilation fan, and the ventilation fan is arranged on the electrical control box.

9. The integrated new air-cooled variable frequency screw air compressor station according to claim 8, characterized in that: The waste heat recovery system includes a water pump, an insulated water tank, a second sewage valve, a valve, a water supply valve and a water flow meter. One end of the water pump is fixedly connected to the waste heat recovery device, and the other end of the water pump is fixedly connected to the insulated water tank. The second sewage valve is fixedly connected to the insulated water tank, the valve is fixedly connected to the insulated water tank, the water supply valve is fixedly connected to the insulated water tank, and the water flow meter is arranged on the pipeline between the waste heat recovery device and the insulated water tank.

10. The integrated new air-cooled variable frequency screw air compressor station according to claim 9, characterized in that: The storage and metering system includes an air storage tank and an air flow meter. One end of the air storage tank is fixedly connected to the pre-cooling evaporator, and the other end of the air storage tank is fixedly connected to the air flow meter.

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