Drainage device for compressed air storage tank
By introducing a PLC control module and machine learning algorithm into the compressed air storage tank, combined with liquid level sensor and temperature and humidity sensor, the drainage logic is dynamically adjusted, solving the problems of failure and rigidity of traditional drainage devices, realizing accurate and timely discharge of condensate, and improving system stability and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional drainage devices are prone to valve failure, have rigid drainage logic, and lack intelligent operating condition adaptation capabilities, resulting in insufficient condensate storage space or ineffective drainage, which affects the stable operation of the compressed air system and the lifespan of the equipment.
The system employs a PLC control module combined with machine learning algorithms to collect data in real time through liquid level sensors, temperature and humidity sensors, and gas supply load monitors. It dynamically adjusts the drainage logic, expands the condensate storage space through a connecting pipe design, and incorporates manual valves and redundant design to ensure smooth drainage.
It enables precise and timely discharge of condensate, reduces valve wear, improves the stability of the drainage device and its ability to adapt to different operating conditions, and extends the service life of the equipment.
Smart Images
Figure CN121720044A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of compressed air storage tanks, in particular to a drainage device for a compressed air storage tank. BACKGROUND
[0002] The compressed air storage tank drainage device is widely used in compressed air systems of power, metallurgy, chemical industry and other industries. Such devices are mainly used to drain the condensate generated during the preparation of compressed air, and are key supporting components for ensuring the stable operation of the compressed air system and maintaining the accuracy of pneumatic equipment. The drainage performance directly affects the operation efficiency and equipment service life of the entire compressed air system.
[0003] Although the common drainage device is equipped with a drain valve and a timed drainage control device, and some devices are also provided with a simple liquid level sensing structure and an emergency drainage valve, the traditional drain valve will repeatedly start and stop due to frequent fluctuations in the liquid level, which is prone to air lock and impurities blockage. The timed drainage device uses a fixed start-stop logic and cannot be flexibly adjusted according to the actual condensate generation rate. Some emergency valves and automatic control systems lack effective linkage. At the same time, the liquid level sensing threshold of the traditional device is a fixed value and cannot be adjusted in combination with changes in environmental temperature and humidity, gas supply load and other working conditions. This will not only cause insufficient condensate storage space and untimely drainage, but also exacerbate valve wear due to invalid drainage actions. It is also difficult to adapt to the drainage needs under different working conditions and cannot meet the working requirements of the compressed air storage tank. Therefore, a drainage device for a compressed air storage tank is proposed. SUMMARY
[0004] In view of the deficiencies of the prior art, the present application provides a drainage device for a compressed air storage tank to solve the technical problems of valve failure, rigid drainage logic and lack of intelligent working condition adaptation ability of traditional drainage devices.
[0005] To achieve the above purpose, the present application provides the following technical scheme: a drainage device for a compressed air storage tank, comprising:
[0006] The back side of the storage tank is provided with a water storage tank, and the other side of the back of the storage tank is provided with a drainage tank. The bottoms of the water storage tank and the drainage tank are connected with a communication pipe. The inner wall of the drainage tank is provided with a mounting row.
[0007] A first conduit is connected to the top of the drainage tank. The other end of the first conduit is connected to the top of the storage tank. The top of the water storage tank is higher than the top of the drainage tank. An electric control valve is arranged in the middle of the first conduit. A liquid level sensor is arranged on the surface of the mounting row.
[0008] A main control box is arranged at the back of the water storage tank and the drain tank, the inside of the main control box is integrated with a PLC control module, the inside of the PLC control module is provided with a machine learning algorithm, and a temperature and humidity sensor is arranged at one side of the top of the gas storage tank;
[0009] A gas supply load monitor is arranged at the other side of the top of the gas storage tank, an environmental temperature sensor is arranged at the top of the drain tank, a manual valve is arranged at the bottom outlet of the water storage tank, and a drain valve is connected to the bottom outlet of the drain tank;
[0010] A drain pipe is connected to the outlet of the drain valve, a filter box is arranged at the outlet of the drain pipe, the temperature and humidity sensor, the gas supply load monitor and the environmental temperature sensor are connected to the PLC control module through signal lines, and the PLC control module is connected to the electric control valve and the drain valve through a control bus.
[0011] Preferably, the number of liquid level sensors is 4-6 groups, the liquid level sensors are uniformly arranged along the longitudinal direction of the installation row, and the outside of the drain tank is provided with a wiring row at a position corresponding to the installation row, and the number of liquid level sensors is 4-6 groups and is uniformly arranged, so that the liquid level in the drain tank can be accurately monitored in multiple directions. The wiring row is arranged at the corresponding position outside the drain tank, which facilitates the connection and management of the sensor line. Such layout can improve the accuracy and reliability of liquid level monitoring, ensure that the PLC control module obtains the liquid level information in time, accurately controls the action of the electric control valve and the drain valve, and ensures the stable operation of the drain device.
[0012] Preferably, the top of the gas storage tank, the water storage tank and the drain tank is provided with a sealing end cover through a flange, and the top and side of the main control box is provided with a wiring port, and the inside of the wiring port is provided with a sealing gasket, the top of the gas storage tank and the like is provided with a sealing end cover through a flange, which can effectively prevent gas leakage and ensure stable pressure in the tank. The top and side of the main control box are provided with wiring ports and sealing gaskets, which can prevent foreign matter and moisture from entering, and protect the internal PLC control module and other electronic components. This design improves the sealing and safety of the device, reduces failures caused by leakage or component damage, and prolongs the service life of the equipment.
[0013] Preferably, the outside of the communication pipe is sleeved with a protective sleeve on both sides, the inside of the protective sleeve is filled with a heat preservation layer, and the outside of the protective sleeve is connected through a bolt and nut matching piece on the upper and lower sides, and the contact surface of the protective sleeve is paved with a sealing pad. The outside of the communication pipe is sleeved with a protective sleeve and filled with a heat preservation layer, which can reduce the influence of external temperature on the medium in the pipe and prevent the medium from condensing or changing due to temperature changes. The protective sleeve is connected by a bolt and nut and the contact surface is paved with a sealing pad, which can enhance the stability and sealing property of the protective sleeve and prevent the medium from leaking. This design ensures the normal flow of the medium in the communication pipe and improves the overall performance of the drain device.
[0014] Preferably, the inner wall of the filter box is provided with a clamping groove, a coarse filter screen is inserted into the clamping groove near the inlet, a coalescing filter element is arranged on the side of the coarse filter screen, and an activated carbon adsorption layer is arranged on the side of the coalescing filter element. The clamping groove on the inner wall of the filter box facilitates the installation and replacement of filter components such as filter screens. The coarse filter screen, the coalescing filter element, and the activated carbon adsorption layer are arranged in sequence to perform multi-stage filtration on the drainage. The coarse filter screen intercepts large-particle impurities, the coalescing filter element separates small liquid droplets, and the activated carbon adsorption layer removes odors and harmful substances, effectively improving the quality of the drainage and reducing environmental pollution.
[0015] Preferably, the outer cover of the installation row is provided with a corrosion-resistant protective cover that is sealingly connected to the inner wall of the drainage tank, and the surface of the protective cover and the inner part of the installation row and the wiring row are provided with through holes that are adapted to the interface end of the liquid level sensor. The corrosion-resistant protective cover on the outer cover of the installation row can prevent the installation row from being eroded by corrosive substances in the drainage tank, prolonging its service life. The protective cover is provided with adapted through holes on the installation row and the wiring row, facilitating the connection of the interface end of the liquid level sensor and not affecting the normal operation of the sensor. This design not only protects the installation row but also ensures the normal functioning of the liquid level monitoring function.
[0016] Preferably, the inner side of the sealing end cover at the top of the gas storage tank, the water storage tank, and the drainage tank is paved with an annular buffer rubber ring, the outer sides of the gas storage tank are respectively provided with an air inlet pipe and an air outlet pipe, and the outer parts of the air inlet pipe and the air outlet pipe are provided with flanges. Paving the inner side of the sealing end cover at the top of the tank body with an annular buffer rubber ring can play a buffering role when the tank body is under pressure or vibration, reducing the impact force between the sealing end cover and the tank body and enhancing the sealing effect. The outer parts of the air inlet pipe and the air outlet pipe are provided with flanges, facilitating the connection with external pipelines and ensuring stable connection, which can guarantee the stable entry and exit of gas into the gas storage tank and improve the stability of the overall operation of the device.
[0017] Preferably, the shell of the main control box adopts a double-layer hollow structure, the inside of the double-layer hollow structure is filled with heat insulation cotton, and the back of the main control box is provided with a louvered heat dissipation groove, and the inner side of the louvered heat dissipation groove is paved with a dustproof filter screen. The double-layer hollow structure of the main control box shell and the filling of heat insulation cotton can effectively block the transfer of external heat and prevent the internal electronic components from being damaged due to excessive temperature. The louvered heat dissipation groove on the back can accelerate the dissipation of internal heat, and the inner side paved with a dustproof filter screen can block dust from entering and keep the inside of the main control box clean. This design ensures the normal operation of the components in the main control box and improves the reliability of the device.
[0018] Preferably, the main control box is also integrated with a data storage module inside, the PLC control module synchronizes the historical monitoring data of the temperature and humidity sensor, the air supply load monitor, the environmental temperature sensor and the drainage action record to the data storage module, the machine learning algorithm completes self-training relying on the stored historical data, the main control box integrates the data storage module, the historical monitoring data of the temperature and humidity sensor and the drainage action record can be synchronously stored. The machine learning algorithm relies on these historical data for self-training, which can continuously optimize its own performance and improve its adaptability to different working conditions. This makes the drainage device more accurately control drainage according to the actual situation, and improves the drainage efficiency and intelligent level.
[0019] Preferably, the machine learning algorithm has a pre-stored matching model of different air supply load intervals and environmental temperature and humidity conditions, when the air supply load monitor detects that the air supply load fluctuation amplitude of the gas storage tank exceeds the pre-set value, or the temperature and humidity sensor detects that the humidity in the tank increases sharply, the PLC control module can quickly retrieve the matching model through the machine learning algorithm, and automatically adjust the upper and lower trigger thresholds of the liquid level sensor in the drainage tank. The machine learning algorithm pre-stores a matching model of different air supply load intervals and environmental temperature and humidity conditions, when the air supply load fluctuates or the humidity in the tank increases sharply, the PLC control module can quickly retrieve the matching model, and automatically adjust the trigger threshold of the liquid level sensor in the drainage tank. This can make the drainage device quickly adapt to changes in working conditions, and timely and accurately perform drainage operations, avoiding problems caused by delayed drainage or excessive drainage, and ensuring stable operation of the device.
[0020] Compared with the prior art, the present application provides a drainage device for a compressed air storage tank, which has the following advantages:
[0021] 1、The drainage device for the compressed air storage tank, through the added communication pipe, the moisture inside the storage tank flows into the inside of the water storage tank through the second conduit, and then synchronously flows into the inside of the drainage tank through the communication pipe, so that the water levels inside the water storage tank and the drainage tank are kept synchronous, thereby effectively expanding the temporary storage space of the condensed liquid, reducing the frequent start-stop of the drain valve, avoiding the problems of easy air lock and blockage of the traditional drain valve, and also making up for the defect that the timing drainage device cannot be adjusted as needed, realizing precise and timely discharge of the condensed liquid. At the same time, by setting the height of the water storage tank to be higher than that of the drainage tank, an overflow space is reserved, and the redundancy design of the manual valve and the PLC is relied on to ensure smooth drainage in case of failure.
[0022] 2. This compressed air storage tank drainage device, through a liquid level sensor longitudinally installed on the inner wall of the drainage tank, combined with a temperature and humidity sensor, an air supply load monitor, and an ambient temperature sensor installed on the top of the storage tank, enables real-time collection of environmental data and historical drainage records via PLC and machine learning algorithms. This allows for dynamic adjustment of the trigger thresholds of multiple upper and lower sensor points, thereby enabling real-time sensing of compressed air humidity fluctuations and changes in air demand. Consequently, the drainage logic is dynamically adjusted. Specifically, in high-temperature and high-humidity environments, the condensate generation rate accelerates. In this case, the machine learning algorithm can predict the liquid level rise trend based on historical data and lower the threshold of the lower sensor point in advance to ensure timely drainage. Conversely, in low-temperature, dry, or low-load conditions, the threshold is appropriately increased to reduce ineffective drainage actions, thereby reducing the need for manual intervention, minimizing wear caused by frequent equipment start-ups and shutdowns, and improving the overall quality of the drainage device. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of the present invention;
[0024] Figure 2 This is a schematic diagram of the connecting pipe structure of the present invention;
[0025] Figure 3 This is a schematic diagram of the main control box structure of the present invention;
[0026] Figure 4 This is a schematic diagram of the structure of the present invention from a bottom view;
[0027] Figure 5 This is a schematic diagram of the internal structure of the drainage tank of the present invention;
[0028] Figure 6 This is a schematic diagram of the internal structure of the filter box of the present invention;
[0029] Figure 7 This is a schematic diagram of the internal structure of the protective sleeve of the present invention;
[0030] Figure 8 This is a block diagram of the automatic control system architecture of the present invention.
[0031] In the diagram: 1. Gas tank; 2. Water tank; 201. Manual valve; 3. Drain tank; 4. Connecting pipe; 5. First conduit; 6. Electrically controlled valve; 7. Main control box; 8. Protective sleeve; 9. Second conduit; 10. Drain valve; 11. Drain pipe; 12. Filter box; 13. Terminal block; 14. Mounting block; 15. Liquid level sensor; 16. Temperature and humidity sensor; 17. Gas supply load monitor; 18. Ambient temperature sensor; 19. Snap-on slot; 20. Coarse filter screen; 21. Coalescing filter element; 22. Activated carbon adsorption layer; 23. Insulation layer. Detailed Implementation
[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0033] This invention provides a technical solution: a drainage device for a compressed air storage tank, comprising an air storage tank 1, a water storage tank 2, a drainage tank 3, a connecting pipe 4, a first conduit 5, an electrically controlled valve 6, a main control box 7, a protective sleeve 8, a second conduit 9, a drain valve 10, a drainage pipe 11, a filter box 12, a terminal block 13, a mounting block 14, a liquid level sensor 15, a temperature and humidity sensor 16, an air supply load monitor 17, an ambient temperature sensor 18, a snap-fit groove 19, a coarse filter screen 20, a coalescing filter element 21, an activated carbon adsorption layer 22, and a heat insulation layer 23.
[0034] Please see Figure 1 A water tank 2 is installed on one side of the back of the gas tank 1, and a drain tank 3 is installed on the other side of the back of the gas tank 1. Please refer to [link / reference]. Figure 2 Both the water storage tank 2 and the drainage tank 3 are connected to a connecting pipe 4 at the bottom. Please refer to [link / reference]. Figure 5 The inner wall of the drainage tank 3 is equipped with an installation drain 14;
[0035] Please see Figure 3 The first conduit 5 is connected to the top of the drain tank 3, and the other end of the first conduit 5 is connected to the top of the gas storage tank 1. The top of the water storage tank 2 is higher than the top of the drain tank 3. An electrically controlled valve 6 is installed in the middle of the first conduit 5. Please refer to [link / reference]. Figure 5 A liquid level sensor 15 is installed on the surface of the mounting row 14;
[0036] Please see Figure 3 The main control box 7 is installed on the back of the water storage tank 2 and the drainage tank 3. The main control box 7 integrates a PLC control module, which contains machine learning algorithms. Please refer to [link / reference needed]. Figure 1 A temperature and humidity sensor 16 is installed on one side of the top of the gas storage tank 1;
[0037] Gas supply load monitor 17 is installed on the top of the gas storage tank 1 on the other side. An ambient temperature sensor 18 is installed on the top of the drain tank 3. Please refer to [link / reference]. Figure 4 A manual valve 201 is installed at the bottom outlet of the water storage tank 2, and a drain valve 10 is connected to the bottom outlet of the drain tank 3.
[0038] Drain pipe 11 is connected to the outlet of steam trap 10. A filter box 12 is installed at the outlet of drain pipe 11. Please refer to [link / reference]. Figure 8Temperature and humidity sensor 16, gas supply load monitor 17 and ambient temperature sensor 18 are all connected to PLC control module through signal lines. PLC control module is connected to electric control valve 6 and drain valve 10 through control bus.
[0039] By adding a connecting pipe 4, the water inside the gas storage tank 1 flows into the water storage tank 2 through the second conduit 9, and then flows into the drain tank 3 through the connecting pipe 4. This keeps the water levels in the water storage tank 2 and the drain tank 3 synchronized, thereby effectively expanding the temporary storage space for condensate, reducing the frequent start and stop of the steam trap 10, avoiding the problems of air lock and blockage of the traditional steam trap 10, and also making up for the defect that the timed drainage device cannot be adjusted as needed. This achieves accurate and timely discharge of condensate. At the same time, by setting the height of the water storage tank 2 to be higher than that of the drain tank 3, overflow space is reserved, and the redundant design of the manual valve 201 and PLC ensures smooth drainage in case of failure.
[0040] By using a liquid level sensor 15 longitudinally installed on the inner wall of the drainage tank 3, combined with a temperature and humidity sensor 16, a gas supply load monitor 17, and an ambient temperature sensor 18 installed on the top of the gas storage tank 1 and the top of the water storage tank 2, the PLC and machine learning algorithm can collect environmental data and historical drainage records in real time, dynamically adjust the trigger thresholds of multiple upper and lower sensor points, and thus sense the humidity fluctuations of compressed air and changes in gas demand in real time. This allows for dynamic adjustment of the drainage logic. In high temperature and high humidity environments, the condensate generation rate is accelerated. At this time, the machine learning algorithm can predict the liquid level rise trend based on historical data and lower the threshold of the lower sensor point in advance to ensure timely drainage. In low temperature and dry or low load conditions, the threshold is appropriately increased to reduce ineffective drainage actions, thereby reducing the need for manual intervention, reducing wear caused by frequent start-ups and shutdowns of the equipment, and improving the quality of the drainage device.
[0041] The number of level sensors 15 is 4-6 sets, and the level sensors 15 are evenly installed along the longitudinal direction of the mounting row 14. A terminal block 13 is installed on the outside of the drain tank 3 at a position corresponding to the mounting row 14. Sealed end caps are installed on the tops of the gas tank 1, water tank 2, and drain tank 3 via flanges. Wiring ports are installed on the top and sides of the main control box 7, and sealing gaskets are installed inside each wiring port. Please refer to [link / reference]. Figure 3 Protective sleeves 8 are fitted on both sides of the connecting pipe 4. Please refer to [link / reference]. Figure 7 The interior of the protective sleeve 8 is filled with an insulation layer 23, and the upper and lower sides of the exterior of the protective sleeve 8 are connected by bolt and nut fittings. The contact surfaces of the protective sleeve 8 are covered with sealing gaskets.
[0042] Please see Figure 6The inner wall of the filter box 12 is equipped with a snap-fit groove 19. A coarse filter screen 20 is inserted into the side of the snap-fit groove 19 near the inlet. A coalescing filter element 21 is installed on the side of the coarse filter screen 20. An activated carbon adsorption layer 22 is installed on the side of the coalescing filter element 21. The outer cover of the mounting strip 14 is equipped with a corrosion-resistant protective cover that is sealed to the inner wall of the drain tank 3. The surface of the protective cover and the interior of the mounting strip 14 and the wiring strip 13 are all provided with through holes that are compatible with the interface end of the liquid level sensor 15. The inner side of the sealing end caps on the top of the gas tank 1, the water tank 2 and the drain tank 3 are all covered with annular buffer rubber rings. An air inlet pipe and an air outlet pipe are respectively installed on the outer sides of the gas tank 1. Flanges are installed on the outer sides of the air inlet pipe and the air outlet pipe.
[0043] The main control box 7 has a double-layer hollow structure with insulation cotton inside. The back of the main control box 7 has a louvered heat dissipation slot with a dust filter inside. The main control box 7 also integrates a data storage module. The PLC control module synchronizes the historical monitoring data of the temperature and humidity sensor 16, the gas supply load monitor 17, and the ambient temperature sensor 18, as well as the drainage action records, to the data storage module. The machine learning algorithm completes self-training based on the stored historical data. The machine learning algorithm has pre-stored matching models for different gas supply load ranges and ambient temperature and humidity conditions. When the gas supply load monitor 17 detects that the gas supply load fluctuation of the gas storage tank 1 exceeds the preset value, or the temperature and humidity sensor 16 detects a sharp increase in humidity inside the tank, the PLC control module can quickly retrieve the matching model through the machine learning algorithm and automatically adjust the upper and lower trigger thresholds of the liquid level sensor 15 in the drainage tank 3.
[0044] This solution uses a connecting pipe 4 to allow water inside the gas storage tank 1 to flow into the water storage tank 2 through the second conduit 9, and then simultaneously into the drainage tank 3 through the connecting pipe 4. This keeps the water levels in the water storage tank 2 and the drainage tank 3 synchronized, effectively expanding the temporary storage space for condensate, reducing the frequent start-stop of the steam trap 10, avoiding the problems of airlock and blockage common with traditional steam traps 10, and compensating for the inability of timed drainage devices to be adjusted as needed. This achieves precise and timely discharge of condensate. Furthermore, by setting the height of the water storage tank 2 higher than that of the drainage tank 3, overflow space is reserved. The redundant design of the manual valve 201 and PLC ensures unobstructed drainage in case of failure. A liquid level sensor 15 is longitudinally installed on the inner wall of the drainage tank 3, combined with a level sensor on the top of the gas storage tank 1... The temperature and humidity sensor 16, the air supply load monitor 17, and the ambient temperature sensor 18 installed on the top of the water storage tank 2 enable the PLC and machine learning algorithms to collect environmental data and historical drainage records in real time, dynamically adjust the trigger thresholds of multiple upper and lower sensor points, and thus sense the humidity fluctuations of compressed air and changes in air demand in real time. This allows for dynamic adjustment of the drainage logic. In high-temperature and high-humidity environments, the condensate generation rate accelerates. At this time, the machine learning algorithm can predict the liquid level rise trend based on historical data and lower the threshold of the lower sensor point in advance to ensure timely drainage. In low-temperature, dry, or low-load conditions, the threshold is appropriately increased to reduce ineffective drainage actions, thereby reducing the need for manual intervention, reducing wear caused by frequent start-ups and shutdowns of the equipment, and improving the quality of the drainage device.
[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A drainage device for a compressed air storage tank, characterized in that, include: A gas storage tank (1) is provided with a water storage tank (2) on one side of its back and a drain tank (3) on the other side of its back. The bottom of the water storage tank (2) and the drain tank (3) are connected to a connecting pipe (4). The inner wall of the drain tank (3) is provided with an installation drain (14). The first conduit (5) is connected to the top of the drain tank (3), and the other end of the first conduit (5) is connected to the top of the gas storage tank (1). The top height of the water storage tank (2) is higher than the top height of the drain tank (3). An electric control valve (6) is installed in the middle of the first conduit (5), and a liquid level sensor (15) is installed on the surface of the mounting drain (14). The main control box (7) is installed on the back of the water storage tank (2) and the drainage tank (3). The main control box (7) integrates a PLC control module. The PLC control module is equipped with a machine learning algorithm. A temperature and humidity sensor (16) is installed on one side of the top of the gas storage tank (1). Gas supply load monitoring instrument (17) is installed on the other side of the top of gas storage tank (1). An ambient temperature sensor (18) is installed at the top of the drain tank (3). A manual valve (201) is installed at the bottom outlet of the water storage tank (2). A drain valve (10) is connected to the bottom outlet of the drain tank (3). A drain pipe (11) is connected to the outlet of a steam trap (10). A filter box (12) is installed at the outlet of the drain pipe (11). The temperature and humidity sensor (16), the gas supply load monitor (17), and the ambient temperature sensor (18) are all connected to the PLC control module through signal lines. The PLC control module is connected to the electric control valve (6) and the steam trap (10) through a control bus.
2. The drainage device for a compressed air storage tank according to claim 1, characterized in that: The number of liquid level sensors (15) is 4-6 sets. The liquid level sensors (15) are evenly installed along the longitudinal direction of the mounting row (14). The drain tank (3) is equipped with a wiring row (13) at a position corresponding to the mounting row (14) on the outside.
3. The drainage device for a compressed air storage tank according to claim 1, characterized in that: The tops of the gas storage tank (1), water storage tank (2) and drainage tank (3) are all fitted with sealing end caps via flanges. The top and sides of the main control box (7) are fitted with wiring ports, and the interior of each wiring port is fitted with a sealing gasket.
4. A drainage device for a compressed air storage tank according to claim 1, characterized in that: The outer sides of the connecting pipe (4) are fitted with protective sleeves (8), and the inside of the protective sleeves (8) is filled with a heat insulation layer (23). The upper and lower outer sides of the protective sleeves (8) are connected by bolt and nut fittings, and the contact surfaces of the protective sleeves (8) are covered with sealing gaskets.
5. A drainage device for a compressed air storage tank according to claim 1, characterized in that: The inner wall of the filter box (12) is provided with a snap-fit groove (19), and a coarse filter screen (20) is inserted into the side of the snap-fit groove (19) near the inlet. A coalescing filter element (21) is installed on the side of the coarse filter screen (20), and an activated carbon adsorption layer (22) is installed on the side of the coalescing filter element (21).
6. A drainage device for a compressed air storage tank according to claim 2, characterized in that: The outer cover of the mounting row (14) is provided with a corrosion-resistant protective cover that is sealed to the inner wall of the drain tank (3). The surface of the protective cover and the interior of the mounting row (14) and the wiring row (13) are provided with through holes that are compatible with the interface of the liquid level sensor (15).
7. A drainage device for a compressed air storage tank according to claim 3, characterized in that: The inner side of the sealing end caps on the top of the gas storage tank (1), water storage tank (2) and drain tank (3) is covered with annular buffer rubber rings. The gas storage tank (1) is equipped with an air inlet pipe and an air outlet pipe on its outer sides, and the air inlet pipe and the air outlet pipe are both equipped with flanges.
8. A drainage device for a compressed air storage tank according to claim 1, characterized in that: The main control box (7) has a double-layer hollow structure. The interior of the double-layer hollow structure is filled with heat insulation cotton. The back of the main control box (7) is provided with a louvered heat dissipation groove, and the inner side of the louvered heat dissipation groove is covered with a dust filter.
9. A drainage device for a compressed air storage tank according to claim 1, characterized in that: The main control box (7) also integrates a data storage module. The PLC control module synchronizes the historical monitoring data of the temperature and humidity sensor (16), the gas supply load monitor (17), the ambient temperature sensor (18), and the drainage action record to the data storage module. The machine learning algorithm completes self-training based on the stored historical data.
10. A drainage device for a compressed air storage tank according to claim 1, characterized in that: The machine learning algorithm has a pre-stored matching model for different gas supply load ranges and environmental temperature and humidity conditions. When the gas supply load monitor (17) detects that the gas supply load fluctuation of the gas storage tank (1) exceeds the preset value, or the temperature and humidity sensor (16) detects a sharp increase in humidity in the tank, the PLC control module can quickly retrieve the matching model through the machine learning algorithm and automatically adjust the upper and lower trigger thresholds of the liquid level sensor (15) in the drain tank (3).