Intelligent air compressor unit system based on dynamic phase compensation and control method thereof

Abstract

The invention relates to an intelligent air compressor unit system based on dynamic phase compensation and a control method of the intelligent air compressor unit system. The problems that an existing multi-unit air compressor system is prone to causing vibration of a mother pipe, the abrasion difference rate between units is high, the service life of all equipment is inconvenient to balance, and the continuous production requirement is difficult to meet are effectively solved. According to the technical scheme, the intelligent air compressor unit system based on dynamic phase compensation can effectively reduce the pressure fluctuation rate of a mother pipe through combination of a star-shaped phase difference mother pipe structure and an adjustable corrugated pipe for dynamic adjustment, and can absorb vibration of a specific frequency through combination of a Helmholtz resonant cavity to prevent equipment faults caused by looseness of a pipeline joint; the equivalent operation time model can balance the service life of each device, so that the whole air compressor unit can operate for a longer time; the cross-unit air volume compensation mechanism can guarantee emergency air supply continuity, the situation that continuous air supply is affected by large pressure fluctuation when a standby unit is switched is avoided, and the air compressor unit provides more stable air output for front-end equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressor systems, and in particular to an intelligent air compressor unit system based on dynamic phase compensation and a control method thereof. Background Art

[0002] Among the many energy sources used, compressed air is one of the most popular energy sources after electricity. It is used increasingly widely in industry, mining, engineering, medical and even agriculture, especially in industry. Given that compressed air has been widely adopted by all walks of life, the use of compressed air is increasing day by day under the premise of large-scale and automated factories. While producing energy / compressed air, the air compressor itself consumes a lot of electricity. Taking the common 100PsiG (7Kg / cm3G) compressed air system as an example, it consumes about 20HP of electricity for every 100CFM of compressed air produced. In the current industrial world, there are many factories that use thousands or even tens of thousands of horsepower air compressors. How to use compressed air reasonably and how to keep the air compressor running stably for a long time have become issues that the industry attaches great importance to.

[0003] The existing multi-unit air compression system generally has the following technical defects:

[0004] (1) Pressure fluctuation problem: When multiple air compressors are operated in parallel, the superposition of pressure pulsations causes the main pipe to vibrate violently, causing cracks in the pipeline welds and failure of downstream equipment;

[0005] (2) Uneven equipment life: Traditional load distribution strategies do not take into account the coupling effects of pollution environment and operating time, resulting in a high difference in wear rate between units, making it difficult to balance the service life of each device;

[0006] (3) Delayed response to faults: There is a high risk of gas supply interruption when switching to the backup unit after equipment failure, making it difficult to meet continuous production needs.

[0007] In view of the above, we provide an intelligent air compressor unit system based on dynamic phase compensation and its control method to solve the above problems. Summary of the invention

[0008] In view of the above situation, the present invention provides an intelligent air compressor unit system based on dynamic phase compensation and a control method thereof.

[0009] An intelligent air compressor system based on dynamic phase compensation, comprising:

[0010] Three sets of parallel air compressor units, each set contains:

[0011] Anti-pollution intake air treatment module;

[0012] The air compressor body, the outlet is connected to the pneumatic valve group;

[0013] The buffer gas storage tank is connected to the outlet of the air compressor through a pipeline;

[0014] The adsorption dryer is connected to the outlet of the buffer gas storage tank through a pipeline;

[0015] Star-type phase difference mother tube structure:

[0016] The three branch pipes are symmetrically distributed at 120° with the center of the main pipe as the origin. The length difference of the branch pipes is 1 / (4n) of the wavelength of the pressure wave, where n is an odd number.

[0017] An adjustable bellows is integrated in the middle of each branch pipe;

[0018] Dynamic control unit:

[0019] Redundant pressure sensor group, installed at key nodes of the mother pipe;

[0020] Dew point sensor group, distributed at the main pipe and adsorption dryer outlet;

[0021] The central controller is connected to the sensors and actuators for communication.

[0022] Preferably, the anti-pollution air intake processing module includes a filter bin that can be quickly disassembled and replaced, a three-stage filter mechanism is arranged inside the filter bin for fully filtering the inhaled gas, and a pressure difference sensor for monitoring the pressure difference in the filter bin is fixedly installed on the side of the filter bin.

[0023] Preferably, the branch pipe length difference of the star-shaped phase difference mother pipe structure satisfies:

[0024] ΔL=λ / (4n), where λ is the wavelength of the pressure wave and n is an odd number sequence of 1, 3, 5…;

[0025] The Helmholtz resonance cavity is arranged every 50 cm on the outer wall of the mother tube, and the cavity volume matches the target frequency.

[0026] Preferably, the adjustable bellows is extended and retracted by a ball screw driven by a servo motor, the flanges at both ends of the adjustable bellows are respectively fixedly connected to the fixed end and the movable end of the branch pipe, and one side of the movable end is fixedly connected to a plug, and the plug is inserted into the branch pipe and slides inside it.

[0027] Preferably, the mother pipe pressure sensor group adopts a triple redundant configuration (at least 3 pressure sensors), and a dew point sensor is independently set at the outlet of each adsorption dryer. The accuracy after data fusion is: pressure measurement error ≤±0.2%FS, dew point temperature error ≤±1°C.

[0028] Preferably, the adsorption dryer adopts a double-tower adsorption structure, and the switching cycle is ≤30 seconds.

[0029] Preferably, the dynamic control unit includes an edge computing node deployed in each air compressor unit and used for vibration and temperature data preprocessing, a central controller with a built-in equivalent running time database and fault feature library, and a local control panel with integrated sound and light alarm and virtual load testing functions.

[0030] Preferably, the pneumatic valve group includes a pneumatic butterfly valve, the response time of the pneumatic butterfly valve is ≤0.3 seconds, and also includes a check valve to prevent gas backflow. The pneumatic butterfly valve and the check valve are both sealed using magnetorheological fluid technology.

[0031] Preferably, the buffer gas storage tanks in adjacent units of the three parallel air compressor units are connected by a bypass pipeline and the adjacent buffer gas storage tanks are interconnected through the bypass pipeline. A proportional regulating valve is provided on the bypass pipeline to support cross-unit gas volume allocation.

[0032] A control method for an intelligent air compressor unit based on dynamic phase compensation comprises the following steps:

[0033] 1. Pressure balance control:

[0034] Monitor the main pipe pressure in real time. If it is lower than 0.65MPa, start the standby units in ascending order of equivalent operating time;

[0035] If it is higher than 0.75MPa, shut down the units in descending order of equivalent operating time;

[0036] 2. Life balance control:

[0037] Dynamically calculate equivalent running time;

[0038] Generate a priority queue every 6 hours and start low-load units first;

[0039] 3. Phase difference compensation:

[0040] Identify the main frequency of the mother pipe pressure fluctuation and adjust the length of the adjustable bellows to offset the vibration;

[0041] Verify that the fluctuation range is ≤ ±0.5%, otherwise readjust;

[0042] 4. Dew point temperature control:

[0043] If the dew point is greater than -35°C, shorten the adsorption dryer regeneration cycle and increase the temperature;

[0044] If the dew point is less than -50°C, extend the regeneration cycle and lower the temperature;

[0045] 5. Fault self-healing response:

[0046] After a fault is detected, the faulty unit is isolated, the standby unit is started, the buffer gas storage tank of the faulty unit is controlled to enter the emergency gas supply mode, and gas is supplied to the adjacent units through the bypass pipeline;

[0047] Adjust the load of adjacent units and the length of the adjustable bellows to maintain stable pressure.

[0048] The above technical solution has the following beneficial effects:

[0049] The intelligent air compressor unit system based on dynamic phase compensation can effectively reduce the mother pipe pressure fluctuation rate through the star-shaped phase difference mother pipe structure combined with the dynamic adjustment of the adjustable bellows, and can absorb specific frequency vibrations in combination with the setting of the Helmholtz resonance cavity, thereby reducing the mother pipe vibration and preventing the loosening of the pipeline connection and causing equipment failure; the equivalent operation time model combines the load rate, pollution level and historical data to greatly reduce the unit life difference rate, and automatically rotates the unit priority at regular intervals to avoid long-term high-load operation of a single machine, balance the service life of each equipment, and enable the overall air compressor unit to operate for a longer time; and when the unit equipment fails, it can quickly complete the shutdown of the faulty equipment and the switching of the standby unit. At the same time, it also has a cross-unit gas volume compensation mechanism, which can ensure the continuity of emergency gas supply and avoid large pressure fluctuations during the switching of the standby unit that affect the continuous gas supply, so that the air compressor unit can provide more stable gas output for the front-end equipment and ensure the smooth operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0051] Figure 2 This is a schematic diagram of the anti-pollution intake air processing module of the present invention;

[0052] Figure 3 It is a schematic diagram of the cross-section state of the filter bin of the present invention;

[0053] Figure 4 It is a schematic diagram of the adjustable bellows of the present invention;

[0054] Figure 5 This is a schematic diagram of the overall process of the control press system of the present invention;

[0055] Figure 6 It is a schematic diagram of the anti-pollution intake linkage control process of the present invention;

[0056] Figure 7 This is a schematic diagram of the fault self-healing process of the present invention;

[0057] Figure 8 This is a schematic diagram of the life balance algorithm of the present invention;

[0058] Fig. 9 It is a schematic diagram of the visual architecture of the present invention.

[0059] In the figure: 1. Air compressor body; 2. Buffer air storage tank; 3. Adsorption dryer; 4. Branch pipe; 5. Main pipe; 6. Adjustable bellows; 7. Filter chamber; 8. Three-stage filtration mechanism; 9. Differential pressure sensor; 10. Helmholtz resonance cavity; 11. Servo motor; 12. Ball screw; 13. Insert pipe; 14. Pressure sensor; 15. Dew point sensor; 16. Pneumatic butterfly valve; 17. Check valve; 18. Bypass line; 19. Proportional control valve; 20. Inlet pipe; 21. Electric cylinder; 22. Blocking plate. DETAILED DESCRIPTION

[0060] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figures 1 to 9 It can be clearly presented in the detailed description of the embodiments that the structural contents mentioned in the following embodiments are all referenced to the drawings in the specification.

[0061] This embodiment provides an intelligent air compressor system based on dynamic phase compensation and a control method thereof, as shown in the attached Figure 1-9 As shown, it includes three sets of parallel air compressor units, a star-shaped phase difference mother pipe structure and a dynamic control unit. Each air compressor unit includes:

[0062] The anti-pollution air intake processing module includes a filter chamber 7 that can be quickly disassembled and replaced. The filter chamber 7 is provided with a three-stage filter mechanism 8 that can fully filter the inhaled gas. The three-stage filter mechanism 8 can be divided into a primary filter layer (first layer), a medium-efficiency filter layer (second layer) and a high-efficiency filter layer (third layer). The primary filter layer can be made of stainless steel mesh and synthetic fiber non-woven fabric. The stainless steel mesh is corrosion-resistant, washable and reusable, with large pores (50-100μm), and is mainly used to intercept large particles of impurities (such as sand, fiber, insects, etc.). The synthetic fiber non-woven fabric has low cost and high dust holding capacity, and has a filtration accuracy of about 10-50μm. It is suitable for initially blocking dust and coarse particles, and can protect subsequent filter layers from large particle impact, thereby extending the life of medium and high efficiency filter materials;

[0063] The medium-efficiency filter layer can be made of glass fiber filter material and electrostatic cotton / melt-blown cloth. The fiber diameter of the glass fiber filter material is fine (1-10μm) and the filtration accuracy is 1-10μm. It can capture pollen, fine dust and some oil mist. The electrostatic cotton / melt-blown cloth can capture 0.5-5μm particles through electrostatic adsorption. It has a high dust holding capacity and a moderate pressure drop. It can further remove medium-sized particle pollutants, reduce the burden on the high-efficiency filter layer, prevent tiny particles from entering the air compressor rotor or cylinder, and reduce wear;

[0064] The high-efficiency filter layer can adopt a composite structure of HEPA filter paper (high-efficiency particulate air filter material), an activated carbon composite filter layer and a nanofiber membrane. The filtration accuracy of the HEPA filter paper (high-efficiency particulate air filter material) is 0.3μm (efficiency ≥ 99.97%), which can intercept bacteria, smoke and ultrafine particles; the activated carbon composite filter layer can adsorb oil mist, odor and volatile organic compounds (VOCs), and is suitable for oily environments; the nanofiber membrane can achieve 0.01μm particle filtration at ultra-low resistance, which is suitable for ultra-clean scenarios (such as the semiconductor industry); at the same time, the filter bin 7 can be quickly removed from the intake pipe 20 and replaced, thereby improving the replacement efficiency of the filter bin 7, and a self-sealing interface can be used at the interface between the filter bin 7 and the intake pipe 20 to ensure zero leakage at the interface. The three-stage filtration mechanism 8 can ensure that the output air cleanliness meets the standard and protect the buffer gas storage tank 2, the adsorption dryer 3 and the back-end equipment from oil and particulate pollution.

[0065] A pressure differential sensor 9 for monitoring the pressure differential in the filter bin 7 is fixedly installed on the side of the filter bin 7. The pressure differential sensor 9 can monitor the clogging state of the filter material in real time and predict the replacement cycle. An air intake pipe 20 for exhaust is fixedly installed on the top of the air compressor unit. There are two anti-pollution air intake treatment modules, and the two anti-pollution air intake treatment modules are arranged in parallel with each other and penetrate the interior of the bottom end of the air intake pipe 20, one of which is used as a spare. A blocking mechanism for adjusting the anti-pollution air intake treatment module is arranged on the side of the air intake pipe 20. The blocking mechanism includes an electric cylinder 21 and a blocking plate 22. The blocking plate 22 is fixedly connected to the end of the movable rod body of the electric cylinder 21 and penetrates the interior of the air intake pipe 20, and the blocking plate 22 can One of the filter chambers 7 is completely blocked; when the air compressor unit is operating normally, the gas only enters the air compressor through one of the filter chambers 7. Two differential pressure sensors 9 are fixedly installed on the side of each filter chamber 7. The two differential pressure sensors 9 correspond to two adjacent filter plates respectively. The differential pressure sensor 9 can monitor the pressure difference between each filter plate in the filter chamber 7 in real time. When the pressure difference is too large, it proves that the filter element of the current anti-pollution treatment module is seriously polluted, affecting the air intake efficiency. Therefore, the central controller can control the movable rod body of the electric cylinder 21 to drive the sealing plate 22 to move and switch to the spare filter chamber 7, thereby ensuring effective filtration of the gas while ensuring normal air intake, and will not affect the normal operation of the air compressor unit.

[0066] The air compressor body 1, the outlet of which is connected to the pneumatic valve group, the pneumatic valve group includes a pneumatic butterfly valve 16, the response time of the pneumatic butterfly valve 16 is ≤ 0.3 seconds, and also includes a check valve 17 to prevent gas backflow, the pneumatic butterfly valve 16 and the check valve 17 are both sealed by magnetorheological fluid technology;

[0067] The buffer gas storage tank 2 is connected to the outlet of the air compressor body 1 through a pipeline. The buffer gas storage tanks 2 in adjacent units of the three parallel air compressor units are connected by a bypass pipeline 18 and the adjacent buffer gas storage tanks 2 are interconnected through the bypass pipeline 18. A proportional regulating valve 19 is arranged on the bypass pipeline 18 to support the gas volume allocation across units. When the pressure of the buffer gas storage tank 2 is less than 0.65MPa, the air compressor of this group is started and preferentially loaded to 80% capacity; when the pressure is greater than 0.75MPa, the air compressor is turned off and switched to the gas supply mode of the buffer gas storage tank 2. When one of the air compressor units fails, the proportional regulating valve 19 of the bypass pipeline 18 of the buffer gas storage tank 2 is opened, so that the gas stored in the buffer gas storage tank 2 of the unit can supply gas to the standby unit, thereby ensuring that the pressure of the mother pipe 5 remains stable during the switching process.

[0068] The adsorption dryer 3 is connected to the outlet of the buffer gas storage tank 2 through a pipeline. The adsorption dryer 3 adopts a double-tower adsorption structure, and the switching cycle is ≤30 seconds;

[0069] One of the three parallel air compressor units is a variable frequency air compressor, and the load rate is continuously adjustable from 30% to 100%. If the gas flow through the mother pipe 5 is not enough to use multiple air compressor units, the variable frequency air compressor can be operated first. The variable frequency air compressor can dynamically adjust its own operating power according to the load status, which can reduce energy consumption when the demand is low.

[0070] The three branch pipes 4 of the star-shaped phase difference mother pipe structure are symmetrically distributed at 120° with the center of the mother pipe 5 as the origin. The length difference of the branch pipes 4 is 1 / (4n) of the pressure wave wavelength, where n is an odd number. The length difference of the branch pipes 4 of the star-shaped phase difference mother pipe structure satisfies: ΔL=λ / (4n), where λ is the pressure wave wavelength, and n is an odd number sequence of 1, 3, 5...;

[0071] The outer wall of the main pipe 5 is arranged with a Helmholtz resonance cavity 10 at intervals of 50 cm. The cavity volume matches the target frequency and can effectively absorb the vibration of the main pipe 5. The branch pipe 4, the main pipe 5 and all the connecting pipes in the air compressor unit are fixed to the wall or the ground through a pipe bracket, which can firmly support the pipes.

[0072] An adjustable bellows 6 is integrated in the middle of each branch pipe 4. The adjustable bellows 6 is extended and retracted by a ball screw 12 driven by a servo motor 11. The flanges at both ends of the adjustable bellows 6 are fixedly connected to the fixed end and the movable end of the branch pipe 4 respectively, and a plug 13 is fixedly connected to one side of the movable end. The plug 13 is inserted into the branch pipe 4 and slides inside it. The servo motor 11 is fixedly installed on the outside of the branch pipe 4 through a fixed frame, and the ball screw 12 is inserted into the flange sides at both ends of the adjustable bellows 6. A laser ranging sensor can be installed on the movable end of the adjustable bellows 6 to monitor the extension and retraction of the adjustable bellows 6 in real time through the laser ranging sensor. The pressure wave is generated by the periodic exhaust of the air compressor. The adjustable bellows 6 changes the length of the propagation path by extension and retraction to adjust the phase difference.

[0073] The insert pipe 13 at the movable end of the adjustable bellows 6 is inserted into the branch pipe 4 close to the side thereof. The movable end of the adjustable bellows 6 is connected to the outside of the ball screw 12 through a ball nut transmission. The servo motor 11 drives the ball screw 12 to rotate to drive the movable end of the adjustable bellows 6 to move laterally, thereby adjusting its telescopic amount. The insert pipe 13 can ensure the connectivity and sealing between the branch pipe 4 and the adjustable bellows 6. When it is necessary to adjust the effective telescopic amount of the adjustable bellows 6, the servo motor 11 is controlled to drive the ball screw 12 to rotate, and the movable end of the adjustable bellows 6 is driven to move in the direction to be adjusted, so that the length of the adjustable bellows 6 can be adjusted according to the vibration of the mother pipe 5, which can effectively reduce the vibration of the pipeline, ensure the stable connection between the pipelines, and prevent the pipelines from loosening and increasing the maintenance cost.

[0074] The dynamic control unit includes a redundant pressure sensor group installed at the key nodes of the main pipe 5, a dew point sensor group distributed at the outlets of the main pipe 5 and the adsorption dryer 3, and a central controller connected to the sensors and actuators. The main pipe 5 pressure sensor group adopts a triple redundant configuration (at least 3 pressure sensors 14), and each adsorption dryer 3 outlet is independently provided with a dew point sensor 15. The accuracy after data fusion is: pressure measurement error ≤±0.2%FS, dew point temperature error ≤±1℃;

[0075] The dynamic control unit also includes an edge computing node deployed at each air compressor unit for vibration and temperature data preprocessing. The edge computing node can process data in real time. It has a central controller with a built-in equivalent running time database and fault feature library. The central controller performs multi-objective optimization and integrates a local control panel with sound and light alarms and virtual load testing functions.

[0076] A control method for an intelligent air compressor unit based on dynamic phase compensation comprises the following steps:

[0077] 1. Pressure balance control:

[0078] The pressure of the main pipe 5 is monitored in real time by the pressure sensor 14, and the target is to maintain 0.7±0.05MPa. If the pressure is lower than 0.65MPa, the unit with the shortest equivalent operating time is started first; if it is still insufficient, other units are loaded in ascending order of operating time; if the pressure is higher than 0.75MPa, the units are unloaded in descending order of operating time to avoid overloading of a single unit and extend the life of the equipment;

[0079] 2. Life balance control:

[0080] Dynamically calculate equivalent running time through the central controller;

[0081] Generate a priority queue every 6 hours to start low-load units first; extend the overall system life and reduce unplanned downtime losses;

[0082] 3. Phase difference compensation:

[0083] Identify the main frequency of pressure fluctuations in the mother pipe 5 and adjust the length of the adjustable bellows 6 to offset the vibration;

[0084] Verify that the fluctuation range is ≤±0.5%, otherwise readjust; it can effectively reduce pipeline vibration and improve the pressure uniformity of the mother pipe 5;

[0085] 4. Dew point temperature control:

[0086] If the dew point is greater than -35°C, shorten the regeneration period of adsorption dryer 3 and increase the temperature;

[0087] If the dew point is less than -50°C, extend the regeneration cycle and lower the temperature; the dew point control accuracy can be controlled within ±3°C to avoid excessive drying of the gas and reduce the energy consumption of the adsorption dryer 3;

[0088] 5. Fault self-healing response:

[0089] After the fault is detected, the faulty unit is isolated, the standby unit is started, and the buffer gas storage tank 2 of the faulty unit is controlled to enter the emergency gas supply mode, and gas is supplied to the adjacent unit through the bypass pipeline 18;

[0090] Adjust the load of adjacent units and the length of the adjustable bellows 6 to maintain stable pressure; it can effectively ensure the continuity and stability of the air supply of the air compressor unit, greatly reduce the scope of fault impact, and ensure the normal and stable operation of other equipment.

[0091] The above description is only for illustrating the present invention. It should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.

Claims

1. An intelligent air compressor system based on dynamic phase compensation, characterized in that: include: Three sets of parallel air compressor units, each set contains: Anti-pollution intake air treatment module; The air compressor body (1) has an outlet connected to a pneumatic valve group; A buffer gas storage tank (2) is connected to the outlet of the air compressor body (1) via a pipeline; The adsorption dryer (3) is connected to the outlet of the buffer gas storage tank (2) through a pipeline; Star-type phase difference mother tube structure: The three branch pipes (4) are symmetrically distributed at 120° with the center of the main pipe (5) as the origin, and the length difference of the branch pipes (4) is 1 / (4n) of the wavelength of the pressure wave, where n is an odd number; An adjustable bellows (6) is integrated in the middle of each branch pipe (4); Dynamic control unit: A redundant pressure sensor group is installed at a key node of the main pipe (5); A dew point sensor group is distributed at the outlet of the main pipe (5) and the adsorption dryer (3); The central controller is connected to the sensors and actuators for communication.

2. According to claim 1, the intelligent air compressor system based on dynamic phase compensation is characterized in that: The anti-pollution intake air processing module comprises a filter chamber (7) that can be quickly disassembled and replaced, a three-stage filter mechanism (8) that can fully filter the inhaled gas is arranged inside the filter chamber (7), and a pressure difference sensor (9) for monitoring the pressure difference inside the filter chamber (7) is fixedly installed on the side of the filter chamber (7).

3. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: The length difference of the branch pipes (4) of the star-shaped phase difference mother pipe structure satisfies: ΔL=λ / (4n), where λ is the wavelength of the pressure wave and n is an odd number sequence of 1, 3, 5…; The outer wall of the mother tube (5) is provided with a Helmholtz resonance cavity (10) at intervals of 50 cm, and the cavity volume matches the target frequency.

4. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: The adjustable bellows (6) is extended and retracted by a ball screw (12) driven by a servo motor (11). The flanges at both ends of the adjustable bellows (6) are fixedly connected to the fixed end and the movable end of the branch pipe (4) respectively, and a plug (13) is fixedly connected to one side of the movable end. The plug (13) is inserted into the branch pipe (4) and slides inside the branch pipe (4).

5. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: The pressure sensor group on the mother pipe (5) adopts a triple redundant configuration (at least 3 pressure sensors (14)), and a dew point sensor (15) is independently arranged at the outlet of each adsorption dryer (3). After data fusion, the accuracy is: pressure measurement error ≤±0.2%FS, dew point temperature error ≤±1°C.

6. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: The adsorption dryer (3) adopts a double-tower adsorption structure, and the switching cycle is ≤30 seconds.

7. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: The dynamic control unit includes an edge computing node deployed on each air compressor unit for vibration and temperature data preprocessing, a central controller with a built-in equivalent running time database and fault feature library, and a local control panel with integrated sound and light alarm and virtual load testing functions.

8. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: The pneumatic valve assembly comprises a pneumatic butterfly valve (16), the response time of the pneumatic butterfly valve being ≤0.3 seconds, and a check valve (17) capable of preventing gas from flowing back, the pneumatic butterfly valve (16) and the check valve (17) both being sealed using magnetorheological fluid technology.

9. The intelligent air compressor system based on dynamic phase compensation according to claim 1 is characterized in that: A bypass pipeline (18) is provided between the buffer gas storage tanks (2) in adjacent units of the three parallel air compressor units, and the adjacent buffer gas storage tanks (2) are interconnected via the bypass pipeline (18). A proportional regulating valve (19) is provided on the bypass pipeline (18) to support cross-unit gas volume allocation.

10. A control method for an intelligent air compressor unit based on dynamic phase compensation, characterized in that: The following steps are involved:

1. Pressure balance control: Monitor the main pipe (5) pressure in real time. If it is lower than 0.65 MPa, start the standby units in ascending order of equivalent operating time; If it is higher than 0.75MPa, shut down the units in descending order of equivalent operating time; 2. Life balance control: Dynamically calculate equivalent running time; Generate a priority queue every 6 hours and start low-load units first; 3. Phase difference compensation: Identify the main frequency of pressure fluctuations in the mother pipe (5), and adjust the length of the adjustable bellows (6) to offset the vibrations; Verify that the fluctuation range is ≤ ±0.5%, otherwise readjust; 4. Dew point temperature control: If the dew point is greater than -35°C, shorten the regeneration cycle of the adsorption dryer (3) and increase the temperature; If the dew point is less than -50°C, extend the regeneration cycle and lower the temperature; 5. Fault self-healing response: After a fault is detected, the faulty unit is isolated, a standby unit is started, and the buffer gas storage tank (2) of the faulty unit is controlled to enter an emergency gas supply mode, and gas is supplied to adjacent units through a bypass pipeline (18); Adjust the load of adjacent units and the length of the adjustable bellows (6) to maintain stable pressure.

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