Super novel compressor intelligent adjusting control energy-saving system

Abstract

The invention relates to the technical field of screw compressors, in particular to a super novel compressor intelligent adjustment control energy-saving system which comprises a compression mechanism, the compression mechanism is provided with a compression assembly relative to an air inlet pipe, an air inlet valve is arranged on an air inlet of the compression assembly, and a control mechanism is arranged between the air inlet pipe and an air outlet pipe; a control air loop is arranged on the control mechanism, an electric proportional valve is arranged on the control air loop, an air outlet of the control air loop is connected to a control port of the air inlet valve, an exhaust pressure sensor is arranged on the air outlet pipe, and the exhaust pressure sensor is electrically connected to the electric proportional valve. Through algorithm control of the PID intelligent instrument, the air inflow of the compressor is completely matched with the air consumption of the rear end, and the energy-saving function is achieved. Meanwhile, after the air inflow and the air consumption are balanced, the pressure of the compressor can be more stable, and accurate control over the exhaust pressure of the screw compressor is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of screw compressors, and particularly to a super new compressor intelligent regulation and control energy-saving system. Background Art

[0002] There are generally three ways to control the exhaust pressure of traditional screw compressors:

[0003] 1. Use the ON-OFF mode to control the exhaust pressure of the screw compressor. This method starts or stops the compressor by monitoring the pressure of the air storage tank. When the pressure of the air storage tank exceeds the set unloading pressure, the compressor enters the unloading mode, and when the pressure drops to the set loading pressure, the compressor restarts. This control mode has a large pressure fluctuation range, which may cause the compressor to start and stop frequently, thereby increasing wear and reducing the service life of the compressor. At the same time, it cannot well meet the requirement of stable pressure.

[0004] 2. Use a pressure regulator to control the exhaust pressure of the screw compressor. The pressure regulator is a pure mechanical pneumatic valve, which can automatically output a certain proportion of control air according to the exhaust pressure at the rear end to adjust the opening of the intake valve, and balance the gas production and gas consumption by changing the intake air volume to stabilize the rear-end pressure. As a pure mechanical valve, the pressure regulator has the disadvantages of slow reaction speed, low adjustment accuracy, and small adjustment range.

[0005] 3. Use frequency conversion regulation to control the exhaust pressure of the screw compressor. This compressor needs to be replaced with a frequency conversion motor, an inverter is added, and a PLC control is added to achieve this. The motor frequency is adjusted by the PLC to balance the gas production and gas consumption to stabilize the rear-end pressure. The manufacturing cost of this mode is much higher than that of a conventional air screw compressor. Summary of the Invention

[0006] The main purpose of the present invention is to provide a super new compressor intelligent regulation and control energy-saving system, aiming to make the intake air volume of the compressor fully match the gas consumption at the rear end through the algorithm control of the PID intelligent instrument, so as to achieve the function of energy saving. At the same time, after the intake air volume and gas consumption are balanced, the pressure of the compressor can also be made more stable, realizing the precise control of the exhaust pressure of the screw compressor.

[0007] To achieve the above object, a super new compressor intelligent regulation and control energy-saving system proposed by the present invention includes a compression mechanism. One end of the compression mechanism is provided with an intake pipe, and the other end is provided with an exhaust pipe. The compression mechanism is provided with a compression assembly relative to the intake pipe. An intake valve is provided at the intake port of the compression assembly. The intake pipe is connected to the intake valve. A control mechanism is provided between the intake pipe and the exhaust pipe. An oil circulation assembly is provided between the compression assembly and the exhaust pipe;

[0008] A control air circuit is provided on the control mechanism. An electro-pneumatic proportional valve is provided on the control air circuit. The air inlet of the control air circuit is connected to the oil circulation assembly, and the air outlet is connected to the control port of the intake valve. An exhaust pressure sensor is provided on the air outlet pipe, and the exhaust pressure sensor is electrically connected to the electro-pneumatic proportional valve.

[0009] In an embodiment of the present application, a PID intelligent regulator is provided between the electro-pneumatic proportional valve and the exhaust pressure sensor, and the PID intelligent regulator is set with an exhaust pressure target value;

[0010] The PID intelligent regulator is provided with a control module relative to the compression mechanism.

[0011] In an embodiment of the present application, a first filter is provided on the control air circuit, and the first filter is between the electro-pneumatic proportional valve and the oil circulation assembly.

[0012] In an embodiment of the present application, the control mechanism further includes a vent air circuit. A vent valve is provided on the vent air circuit. The air inlet of the vent valve is connected to the oil circulation assembly, and the air outlet is connected to the intake pipe;

[0013] A control branch is provided on the control air circuit relative to the control port of the vent valve, and the air outlet of the electro-pneumatic proportional valve is connected to one end of the control branch away from the vent valve.

[0014] In an embodiment of the present application, the air outlet of the vent valve is further communicated with the intake valve, and a check valve is provided on the vent valve relative to the intake valve.

[0015] In an embodiment of the present application, the oil circulation assembly includes an oil-gas separator and a circulation oil path. An oil-gas mixing pipe is provided between the compression assembly and the oil-gas separator. The oil inlet of the circulation oil path is connected to the oil-gas separator, and the oil outlet is connected to the compression assembly. An oil filter is provided on the circulation oil path.

[0016] In an embodiment of the present application, a temperature control valve is provided between the oil-gas separator and the oil filter. A cooling branch is provided on the temperature control valve relative to the oil filter, and an oil cooler is provided on the cooling branch.

[0017] In an embodiment of the present application, a tank pressure sensor is provided on the oil-gas separator, and an oil drain port is provided on the oil-gas separator relative to the circulation oil path.

[0018] In an embodiment of the present application, an oil return pipeline is provided on the oil-gas separator relative to the compressor, and a second filter, a sight glass, and a throttle orifice are provided on the oil return pipeline.

[0019] In an embodiment of the present application, an air cooler is provided on the outlet pipe, the exhaust pressure sensor is connected to one side of the air outlet of the air cooler, and a minimum pressure valve is provided between the air inlet of the air cooler and the oil-gas separator.

[0020] By adopting the above technical solutions, the present invention has the following advantages:

[0021] 1. From a structural perspective, the compression mechanism itself can be divided into an inlet pipe, a compression assembly, an oil circulation assembly, and an outlet pipe. The compression assembly is connected to the inlet pipe by an intake valve; the intake valve itself can be a lift-type intake valve. In a lift-type intake valve, "lift-type" means that the valve can rise linearly along the valve stem axis when opened, increasing the channel opening, so that the intake valve can achieve intake control. Using this lift-type intake valve can provide a basic environment for controlling the exhaust pressure; mechanisms such as an air filter and a vacuum switch can also be provided at the end of the inlet pipe away from the intake valve. The air filter can filter the gas entering the compression mechanism to reduce impurities, improve the quality of the compressed gas, and at the same time prevent large particles in the impurities from entering the compressor and causing damage to the compressor itself. Using this structure can further optimize the compression mechanism, improve the efficiency of compressed gas, and reduce potential safety hazards; the compression assembly itself structurally includes a compressor for compression and a motor for providing power to the compressor. When the compression assembly compresses gas, the temperature of the gas itself will rise. When compressing combustible gas, the rising gas temperature will pose a serious safety hazard. Moreover, it is very difficult to drive the compressor to compress gas only by the motor during gas compression, and the compressor itself is easily damaged. Therefore, through the oil circulation assembly, lubricating oil for compression assistance can be introduced into the compressor. This oil body can cool the gas itself, and the compressor is difficult to compress the oil body. After the oil body enters the compressor, it can assist the compressor in compression, and the oil body can form a protective layer in the compressor, making the compressor compression smoother while protecting the compressor itself. When the compression is completed, an oil-gas mixture will be formed. After the mixture is re-introduced into the oil circulation assembly, the oil body can be separated again and returned to the compressor through the circulation path to assist in compression. After separating the oil body, compressed gas can be obtained from the outlet pipe. Through the above structure, gas can be compressed quickly and stably, and the entire process is relatively stable, providing a basic condition for the control of the exhaust pressure.

[0022] 2. A control mechanism is provided inside the compression mechanism. The control mechanism is located between the intake pipe and the outlet pipe. One end of the control mechanism monitors the magnitude of the exhaust pressure at the outlet pipe, and the other end controls the intake pipe and the intake valve. By adjusting the intake air volume, when the exhaust pressure is too high, reducing the intake air volume can lower the exhaust pressure; when the exhaust pressure is too low, increasing the intake air volume can raise the exhaust pressure. This enables the entire compression mechanism to stably and precisely maintain the exhaust pressure within a stable range with a small difference without the need to stop the machine, greatly reducing the pressure fluctuation of the end storage tank, stabilizing the pressure of the downstream gas-using equipment, improving the stability and reliability of the downstream gas-using equipment, avoiding frequent start-stop of the compressor, and making the operation cost of the compressor lower and more energy-efficient.

[0023] 3. The control mechanism includes a control air circuit, and an electro-pneumatic proportional valve is provided on the control air circuit. Since the oil circulation assembly is connected to the outlet pipe, connecting the control air circuit to the oil circulation assembly is basically equivalent to connecting it to the outlet pipe. The control air circuit can direct a part of the gas to be discharged to the intake valve. An exhaust pressure sensor is also provided on the outlet pipe. The exhaust pressure sensor is configured to output a corresponding electrical signal according to the magnitude of the exhaust pressure of the outlet pipe. The greater the exhaust pressure, the greater the output electrical signal value. The electro-pneumatic proportional valve is configured to adjust the outlet pressure according to the received electrical signal value. The greater the electrical signal value, the greater the outlet pressure. The intake valve is configured to adjust the opening degree of the intake valve according to the pressure received at the control port of the intake valve. The greater the pressure received, the smaller the opening degree. The opening degree of the lift-type intake valve directly affects the intake air volume, and the size of the intake air volume determines the pressure of the end storage tank. Through the above series of associated actions, this control system can automatically stabilize the pressure of the storage tank connected to the end of the outlet pipe near the target value, achieving precise control of the exhaust pressure of the screw compressor.

[0024] Combined with the structure and function of the above control system, the present invention has the following differences and advantages compared with the existing 3 control modes:

[0025] 1. Different from ON - OFF regulation, it can continuously adjust and control the exhaust pressure without stopping the machine, with low loss to the compressor, long service life, and more stable exhaust pressure, especially suitable for occasions where the gas pressure needs to be stable.

[0026] 2. Different from frequency conversion regulation, the present invention omits components such as frequency conversion motors, frequency converters, PLCs, and solenoid valves, greatly reducing the manufacturing cost. Although the cost is greatly reduced, the stability of the exhaust pressure is not inferior to frequency conversion regulation.

[0027] 3. Different from pressure regulator regulation, the present invention has the advantages of fast response speed, wide adjustment range, and high adjustment accuracy.

[0028] The present invention can be made into a highly integrated one-piece control module. The present invention has powerful chip computing power, and can automatically match and output accurate control signals according to the exhaust pressure at the rear end through PID operation, control the opening of the intake valve, make the intake air volume infinitely close to the gas consumption volume, so as to stabilize the exhaust pressure to the target value. And compared with the above three control methods, it saves solenoid valves, shortens the pipeline, and reduces leakage points. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram of the intelligent adjustment control energy-saving system of the super new compressor of the present invention.

[0031] Description of the reference numerals in the drawings:

[0032] 1. Compression mechanism; 2. Intake pipe; 3. Compression assembly; 31. Intake valve; 4. Control mechanism; 5. Control air circuit; 51. Electro-hydraulic proportional valve; 52. First filter; 6. Bleed air path; 61. Bleed valve; 7. Oil circulation assembly; 71. Oil-gas separator; 72. Oil return pipeline; 73. Circulation oil path; 74. Temperature control valve; 8. Outlet pipe; 81. Air cooler; 82. Exhaust pressure sensor; 9. PID intelligent regulator.

[0033] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the present application in detail in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] Referring to Figure 1 , to achieve the above object, a super new compressor intelligent adjustment control energy-saving system proposed by the present invention includes a compression mechanism 1, an intake pipe 2 is provided at one end of the compression mechanism 1, an outlet pipe 8 is provided at the other end, a compression assembly 3 is provided on the compression mechanism 1 opposite to the intake pipe 2, an intake valve 31 is provided at the intake port of the compression assembly 3, the intake pipe 2 is connected to the intake valve 31, a control mechanism 4 is provided between the intake pipe 2 and the outlet pipe 8, and an oil circulation assembly 7 is provided between the compression assembly 3 and the outlet pipe 8;

[0036] The control mechanism 4 is provided with a control air circuit 5. The control air circuit 5 is provided with an electro-pneumatic proportional valve 51. The air inlet of the control air circuit 5 is connected to the oil circulation assembly 7, and the air outlet is connected to the control port of the intake valve 31. An exhaust pressure sensor 82 is provided on the exhaust pipe 8, and the exhaust pressure sensor 82 is electrically connected to the electro-pneumatic proportional valve 51.

[0037] Viewed from its structure, the compression mechanism 1 can be divided into an intake pipe 2, a compression assembly 3, an oil circulation assembly 7, and an exhaust pipe 8. The compression assembly 3 is connected to the intake pipe 2 by using an intake valve 31. The intake valve 31 itself can be a lift-type intake valve 31. In the lift-type intake valve 31, "lift-type" means that the valve can rise linearly along the valve stem axis when opened, increasing the passage opening degree, so that the intake valve 31 can achieve intake control. Using this lift-type intake valve 31 can provide a basic environment for controlling the exhaust pressure. An air filter, a vacuum switch and other mechanisms can also be provided at one end of the intake pipe 2 away from the intake valve 31. The air filter can filter the gas entering the compression mechanism 1 to reduce impurities, improve the quality of the compressed air, and at the same time prevent large particles in the impurities from entering the compressor and causing damage to the compressor itself. Using this structure can further optimize the compression mechanism 1, improve the efficiency of compressed gas, and reduce potential safety hazards. The compression assembly 3 itself structurally includes a compressor for compression and a motor for providing power to the compressor. When the compression assembly 3 compresses gas, the temperature of the gas itself will rise. When compressing combustible gas, the rising gas temperature will cause serious safety hazards. And if only relying on the motor to drive the compressor to compress gas during gas compression, it is very difficult and the compressor itself is easily damaged. Therefore, through the oil circulation assembly 7, the lubricating oil for compression assistance can be introduced into the compressor. This oil body can cool the gas itself, and the compressor is difficult to compress the oil body. After the oil body enters the compressor, it can assist the compressor in compression. Moreover, the oil body can form a protective layer in the compressor, making the compressor compression smoother while protecting the compressor itself. When the compression is completed, an oil-gas mixture will be formed. After the mixture is re-introduced into the oil circulation assembly 7, the oil body can be separated again and return to the compressor through the circulation path to assist compression. After separating the oil body, compressed air can be obtained from the exhaust pipe 8. Through the above structure, gas can be compressed quickly and stably, and the whole process is relatively stable, providing a basic condition for the control of the exhaust pressure.

[0038] The compression mechanism 1 is provided with a control mechanism 4. The control mechanism 4 is located between the intake pipe 2 and the exhaust pipe 8. One end of the control mechanism 4 monitors the magnitude of the exhaust pressure at the exhaust pipe 8, and the other end controls the intake pipe 2 and the intake valve 31. By adjusting the intake air volume, when the exhaust pressure is too high, reducing the intake air volume can lower the exhaust pressure; when the exhaust pressure is too low, increasing the intake air volume can raise the exhaust pressure. In this way, the entire compression mechanism 1 can stably and precisely maintain the exhaust pressure within a stable range with a small difference without shutting down, which can greatly reduce the pressure fluctuation of the end storage tank, stabilize the pressure of the subsequent gas-using equipment, improve the stability and reliability of the subsequent gas-using equipment, avoid frequent start-stop of the compressor, and make the operation cost of the compressor lower and more energy-efficient.

[0039] The electro-hydraulic proportional valve 51 controls the proportional electromagnet through an electrical signal, adjusts the position of the valve core according to the change of the input signal, thereby changing the flow rate or pressure passing through the valve port, and realizes continuous and precise control of the output flow rate or pressure, rather than only being able to perform on / off control like an ordinary solenoid valve.

[0040] The control mechanism 4 includes a control air circuit 5, and an electro-hydraulic proportional valve 51 is provided on the control air circuit 5. Since the oil circulation assembly 7 is connected to the exhaust pipe 8, therefore, connecting the control air circuit 5 to the oil circulation assembly 7 is basically equivalent to connecting it to the exhaust pipe 8. The control air circuit 5 can lead a part of the gas to be discharged to the intake valve 31. An exhaust pressure sensor 82 is also provided on the exhaust pipe 8. The exhaust pressure sensor 82 is configured to output a corresponding electrical signal according to the magnitude of the exhaust pressure of the exhaust pipe 8. The greater the exhaust pressure, the greater the output electrical signal value. The electro-hydraulic proportional valve 51 is configured to adjust the outlet pressure according to the received electrical signal value. The greater the electrical signal value, the greater the outlet pressure. The intake valve 31 is configured to adjust the opening degree of the intake valve 31 according to the magnitude of the pressure received at the control port of the intake valve 31. The greater the received pressure, the smaller the opening degree. The opening degree of the lift-type intake valve 31 directly affects the intake air volume, and the intake air volume determines the pressure of the end storage tank. Through the above series of associated actions, this control system can automatically stabilize the pressure of the storage tank connected to the end of the exhaust pipe 8 near the target value and achieve precise control of the exhaust pressure of the screw compressor.

[0041] The present invention can be made into a highly integrated one-piece control module. The present invention has powerful chip computing power, can automatically match and output precise control signals according to the exhaust pressure at the rear end through PID operation, control the opening degree of the intake valve, make the intake air volume infinitely approach the gas consumption volume, so as to stabilize the exhaust pressure to the target value. And compared with the above 3 control methods, it saves solenoid valves, shortens the pipeline, and reduces leakage points.

[0042] Refer to in combination with Figure 1, there is a PID intelligent regulator 9 between the electro-hydraulic proportional valve 51 and the exhaust pressure sensor 82, and the PID intelligent regulator 9 is set with an exhaust pressure target value;

[0043] The PID intelligent regulator 9 is provided with a control module relative to the compression mechanism 1.

[0044] PID is a control system in industrial process control that controls according to the proportion, integral, and differential of the error generated by comparing the information collected from the real-time data of the controlled object with the given value. The PID intelligent regulator 9 has an automatic control function of automatically adjusting according to the deviation between the set value and the actual value, a high-precision adjustment function of achieving precise control through PID parameter optimization, an alarm output function of setting upper and lower limit alarms to ensure the safe operation of the process, a data storage and communication function of realizing remote communication through RS485 / RS232 and supporting the Modbus protocol, a self-tuning function of automatically calculating the best PID parameters by intelligent algorithms to improve the control performance, and many other excellent performances.

[0045] The PID intelligent regulator 9 is set with an exhaust pressure target value, and the data input end of the PID intelligent regulator 9 is connected to the exhaust pressure sensor 82, and can receive the measured exhaust pressure value in real time. The PID intelligent regulator 9 can accurately judge according to the deviation between the measured value and the target value. The PID intelligent regulator 9 is configured to output a corresponding control electrical signal to the electro-hydraulic proportional valve 51 according to the exhaust pressure target value and the measured exhaust pressure value transmitted in real time by the exhaust pressure sensor 82. The control electrical signal can cooperate with the lifting intake valve 31 to control the gas flow, so as to realize the stable control of the exhaust pressure value.

[0046] The screw compressor itself is provided with a control system. The screw compressor control system is generally connected to each component of the compression mechanism 1 and each node of the control mechanism 4, and can monitor and control the working state of the entire screw compressor. The PID intelligent regulator 9 is provided with a control module relative to the control system of the screw compressor itself, and can receive control commands from the control system of the screw compressor itself through the control module, such as a shutdown command. When the whole machine stops, the PID intelligent regulator 9 receives the shutdown signal and outputs a full control signal to make the electro-hydraulic proportional valve 51 output full pressure. After the intake valve 31 detects the pressure, it will close the intake valve 31, so as to realize intake throttling and achieve the purpose of gradually shutting down the whole machine. Using this structure can better maintain the whole system, so that the exhaust pressure control system can control the exhaust pressure, greatly reduce the pressure fluctuation of the end storage tank, make the pressure of the rear gas-using equipment stable, improve the stability and reliability of the rear gas-using equipment, and also enable the exhaust pressure control system to control the working state of the whole screw compressor, making the exhaust pressure control system more practical. A system has multiple functions, can effectively reduce the manufacturing cost, and can play the role of replacing the variable-frequency screw compressor in the market.

[0047] Refer to Figure 1 , a first filter 52 is provided on the control air circuit 5, and the first filter 52 is located between the electro-pneumatic proportional valve 51 and the oil circulation assembly 7.

[0048] The intake port of the electro-pneumatic proportional valve 51 is connected to the first filter 52. Since the control air circuit 5 is directly connected to the oil-gas separator 71, there are quite a few impurities in the gas in the circuit. When it is necessary to ensure the normal operation of the electro-pneumatic proportional valve 51, the first filter 52 is needed to filter the gas, which can protect the electro-pneumatic proportional valve 51 and at the same time purify the gas entering the intake valve 31, avoiding damage to the valve body caused by impurities entering the intake valve 31.

[0049] Refer to Figure 1 , the control mechanism 4 further includes an air release path 6. A vent valve 61 is provided on the air release path 6. The intake port of the vent valve 61 is connected to the oil circulation assembly 7, and the outlet port is connected to the intake pipe 2;

[0050] A control branch is provided at the control port of the control air circuit 5 relative to the vent valve 61. The outlet port of the electro-pneumatic proportional valve 51 is connected to one end of the control branch away from the vent valve 61.

[0051] An air release path 6 is also provided in the control mechanism 4. An intake pipe 2 is provided on the air release path 6. The control branch connects the vent valve 61 and the control air circuit 5. When the control system of the screw compressor itself issues a shutdown command, the PID intelligent regulator 9 receives the shutdown signal and outputs a full signal to make the electro-pneumatic proportional valve 51 output full pressure, closing the intake valve 31. At the same time, the vent valve 61 is turned on to release the pressure of the oil-gas separator 71.

[0052] Using the air release path 6 and the vent valve 61 can effectively protect the whole machine. When the internal pressure of the screw compressor is too high and emergency protection is needed, the air release path 6 will quickly release the internal pressure to avoid safety accidents.

[0053] Refer to Figure 1 , the outlet port of the vent valve 61 is also connected to the intake valve 31. A check valve is provided on the vent valve 61 relative to the intake valve 31.

[0054] The outlet port of the vent valve 61 is connected to the intake pipe 2. In order to improve the protection effect and achieve the effect of rapid air release, a branch is provided on the air pipe at the outlet port. The branch is connected to the intake valve 31 by using the branch. In order to prevent the gas of the intake valve 31 from flushing into the screw compressor and causing damage to the machine body, a check valve is provided on the branch to cut off the branch, which can effectively protect the whole screw compressor.

[0055] Refer to Figure 1, the oil circulation assembly 7 includes an oil-gas separator 71 and a circulation oil path 73. An oil-gas mixing pipe is provided between the compression assembly 3 and the oil-gas separator 71. The inlet of the circulation oil path 73 is connected to the oil-gas separator 71, and the outlet is connected to the compression assembly 3. An oil filter is provided on the circulation oil path 73.

[0056] The oil circulation assembly 7 includes an oil-gas separator 71 and a circulation oil path 73. The oil-gas separator 71 can separate the oil-gas mixture introduced into the oil-gas mixing pipe by means of physical centrifugation, enabling the compression auxiliary oil to be recycled, effectively reducing costs and enhancing market competitiveness. The circulation oil path 73 can re-introduce the separated oil into the compression assembly 3. The oil filter can ensure the cleanliness of the circulating oil, preventing impurities from entering the compressor and causing structural damage during its operation.

[0057] Refer to Figure 1 , a temperature control valve 74 is provided between the oil-gas separator 71 and the oil filter. The temperature control valve 74 is provided with a cooling branch relative to the oil filter, and an oil cooler is provided on the cooling branch.

[0058] The oil separated by the oil-gas separator 71 may have a normal temperature and can be directly recycled. The temperature control valve 74 monitors the temperature of the circulating oil. The temperature control valve 74 is a three-way valve. If the oil needs to be cooled, the cooling branch is conducted, enabling the oil to rapidly cool down in the oil cooler. The cooled oil will also pass through the oil filter to ensure the stability of the operation within the compression assembly 3, ensuring that impurities do not enter the compressor and enabling the compressor to ensure safety.

[0059] Refer to Figure 1 , a tank pressure sensor is provided on the oil-gas separator 71, and an oil drain port is provided on the oil-gas separator 71 relative to the circulation oil path 73.

[0060] The tank pressure sensor can monitor the air pressure at the outlet end of the screw compressor. When the pressure is too strong, the control system of the screw compressor itself will operate and shut down emergently. The control mechanism 4 will use the PID intelligent regulator 9 to control the intake valve 31 to close, cut off the intake, and start the venting program, using the vent valve 61 to rapidly reduce the internal pressure, avoiding serious accidents, and being able to extend the service life of the machine body and ensure the safety of the machine body itself.

[0061] Refer to Figure 1 , an oil return pipe 72 is provided on the oil-gas separator 71 relative to the compressor. A second filter, a sight glass, and a throttle orifice are provided on the oil return pipe 72.

[0062] One end of the oil return pipeline 72 is inserted into the oil separation filter element of the oil-gas separator 71. The oil return pipeline 72 is connected to the compressor and is used to guide the oil that fails to enter the lower circulation oil path 73 back to the compressor, avoiding blocking the air outlet pipe 8. Moreover, a second filter for filtering impurities that may be generated in the equipment, a sight glass for observing the oil path state, and a throttle hole for controlling the flow rate and velocity of the oil body and preventing substances in the compressor from entering the oil-gas separator 71 in advance are provided on the oil return pipeline 72. Through the cooperation of the above structures, the pressure in the compressor can be made more stable, and the accurate control of the exhaust pressure of the screw compressor can be realized.

[0063] Referring to Figure 1 , an air cooler 81 is provided on the air outlet pipe 8. The exhaust pressure sensor 82 is connected to one side of the air outlet of the air cooler 81, and a minimum pressure valve is provided between the air inlet of the air cooler 81 and the oil-gas separator 71.

[0064] The air cooler 81 can reduce the temperature of the output gas, facilitating the use of the gas by subsequent mechanisms and ensuring the safe storage of the gas in the gas storage tank. The exhaust pressure sensor 82 connected to one side of the air outlet of the air cooler 81 can detect the pressure of the cooled gas, avoiding errors in testing caused by unstable pressure of high-temperature gas. The minimum pressure valve can protect the oil-gas separator 71 and the air outlet pipe 8, realizing the accurate control of the exhaust pressure of the screw compressor and improving the user experience.

[0065] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0066] The above is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of this application should be included in the protection scope of this application.

Claims

1. A super new intelligent adjustment control energy-saving system for a compressor, comprising a compression mechanism, characterized in that, One end of the compression mechanism is provided with an intake pipe, and the other end is provided with an outlet pipe. A compression assembly is provided on the compression mechanism opposite to the intake pipe. An intake valve is provided on the intake port of the compression assembly, and the intake pipe is connected to the intake valve. A control mechanism is provided between the intake pipe and the outlet pipe, and an oil circulation assembly is provided between the compression assembly and the outlet pipe. The control mechanism is provided with a control air circuit. An electro-pneumatic proportional valve is provided on the control air circuit. The intake port of the control air circuit is connected to the oil circulation assembly, and the outlet port is connected to the control port of the intake valve. An exhaust pressure sensor is provided on the outlet pipe, and the exhaust pressure sensor is electrically connected to the electro-pneumatic proportional valve.

2. The intelligent adjustment control energy-saving system of a super new compressor according to claim 1, characterized in that, A PID intelligent regulator is provided between the electro-pneumatic proportional valve and the exhaust pressure sensor, and the PID intelligent regulator is set with an exhaust pressure target value. The PID intelligent regulator is provided with a control module opposite to the compression mechanism.

3. A super new type compressor intelligent adjustment control energy-saving system according to claim 2, characterized in that, A first filter is provided on the control air circuit, and the first filter is located between the electro-pneumatic proportional valve and the oil circulation assembly.

4. A super new compressor intelligent adjustment control energy-saving system according to claim 1, characterized in that, The control mechanism further includes a vent air circuit. A vent valve is provided on the vent air circuit. The intake port of the vent valve is connected to the oil circulation assembly, and the outlet port is connected to the intake pipe. A control branch is provided on the control air circuit opposite to the control port of the vent valve. The outlet port of the electro-pneumatic proportional valve is connected to one end of the control branch away from the vent valve.

5. A super new type of compressor intelligent adjustment control energy-saving system according to claim 4, characterized in that The outlet port of the vent valve is also communicated with the intake valve, and a check valve is provided on the vent valve opposite to the intake valve.

6. A super new compressor intelligent adjustment control energy-saving system according to claim 1, characterized in that, The oil circulation assembly includes an oil-gas separator and a circulation oil path. An oil-gas mixing pipe is provided between the compression assembly and the oil-gas separator. The inlet of the circulation oil path is connected to the oil-gas separator, and the outlet is connected to the compression assembly. An oil filter is provided on the circulation oil path.

7. A super new compressor intelligent adjustment control energy-saving system according to claim 6, characterized in that, A temperature control valve is provided between the oil-gas separator and the oil filter. A cooling branch is provided on the temperature control valve opposite to the oil filter, and an oil cooler is provided on the cooling branch.

8. A super new compressor intelligent adjustment control energy-saving system according to claim 6, characterized in that, A tank pressure sensor is provided on the oil-gas separator, and an oil drain port is provided on the oil-gas separator opposite to the circulation oil path.

9. The intelligent adjustment control energy-saving system of a super new compressor according to claim 8, characterized in that, An oil return pipeline is provided on the oil-gas separator opposite to the compressor. A second filter, a sight glass, and a throttle orifice are provided on the oil return pipeline.

10. A super new compressor intelligent adjustment control energy-saving system according to claim 6, characterized in that, An air cooler is provided on the outlet pipe. The exhaust pressure sensor is connected to one side of the outlet of the air cooler. A minimum pressure valve is provided between the inlet of the air cooler and the oil-gas separator.

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