A compressed gas control device

Abstract

The application relates to a compressed gas control device, belonging to the technical field of compressed gas temperature control, which comprises a gas treatment system and a water treatment system, the water treatment system comprises a cooling device and a multi-stage heating device, buffer devices are arranged between the cooling device and the heating device and between two adjacent heating devices, a water storage tank is connected to the tail end of the water treatment system, and a heat exchange device is jointly connected to the gas outlet end of the gas treatment system and the water outlet end of the water storage tank. The application has the effect of realizing higher temperature control precision of compressed gas.

Description

Technical Field

[0001] This application relates to the field of compressed gas temperature control technology, and in particular to a compressed gas control device. Background Technology

[0002] Compressed gas constant temperature supply devices are widely used in precision industrial fields such as semiconductor wafer storage, laser processing and optical inspection. Such devices have increasingly higher requirements for the stability of gas temperature. At present, common gas temperature control solutions mostly use semiconductor cooling chips in combination with electric heaters to achieve heating and cooling. This solution has a relatively compact structure and fast response speed, which can meet the needs of general industrial scenarios.

[0003] However, the cooling power of thermoelectric coolers in practical applications is limited, making it difficult to cope with the heat exchange requirements of continuous high flow rates and high heat loads in compressed air, resulting in severely insufficient temperature control capabilities under heavy operating conditions. At the same time, thermoelectric cooler temperature control systems have typical nonlinear and time-varying characteristics, which are prone to temperature overshoot and oscillation when the load fluctuates or the ambient temperature changes, resulting in poor temperature control stability. Therefore, the temperature control accuracy of gas temperature control devices based on thermoelectric coolers is low, making it difficult to meet the requirements for higher temperature control accuracy. Summary of the Invention

[0004] To achieve higher temperature control accuracy for compressed gas, this application provides a compressed gas control device.

[0005] The compressed gas control device provided in this application adopts the following technical solution: A compressed gas control device includes a gas processing system and a water processing system. The water processing system includes a cooling device and a multi-stage heating device. Buffer devices are provided between the cooling device and the heating device, as well as between two adjacent heating devices. A water storage tank is connected to the end of the water processing system. A heat exchange device is connected to both the gas outlet of the gas processing system and the water outlet of the water storage tank.

[0006] By adopting the above technical solution, an independent gas treatment device and a water treatment device are set up. The two work together. The compressed gas is first pre-treated by the gas treatment system to remove impurities and stabilize the airflow. The water treatment system relies on the cooling device and multi-stage heating device to achieve precise temperature control of the water body. It is also equipped with a multi-stage buffer structure to ensure uniform and stable water temperature, so that the circulating water has a high temperature accuracy. Subsequently, the high-precision constant temperature circulating water exchanges heat with the pre-treated compressed gas. Relying on the stable water temperature benchmark, the temperature control accuracy of the compressed gas is improved from the heat exchange source.

[0007] Optionally, the cooling device includes a compressor, a condenser, a throttle valve, and an evaporator, wherein the compressor, the condenser, the throttle valve, and the evaporator are connected in sequence in a cycle. The evaporator is provided with a refrigerant flow channel and a circulating water flow channel, and the refrigerant and the circulating water exchange heat in the evaporator to reduce the temperature of the circulating water.

[0008] By adopting the above technical solution, the cooling device uses a compressor, condenser, expansion valve, and evaporator to form a complete closed-loop refrigeration cycle. The refrigeration process is continuous and stable. The refrigerant is compressed from a low-temperature, low-pressure gaseous state to a high-temperature, high-pressure gas in the compressor, and then flows into the condenser to complete heat dissipation and condensation, transforming into a high-temperature, high-pressure liquid refrigerant. Then, it passes through the expansion valve to reduce the pressure, forming a low-temperature, low-pressure gas-liquid mixture. Finally, it enters the evaporator to fully exchange heat with the circulating water, quickly absorbing heat from the water to lower the water temperature. After absorbing heat, the refrigerant turns back into a gaseous state and circulates back to the compressor for continuous operation. The entire closed-loop refrigeration structure has high heat exchange efficiency and strong operating stability, which can meet the continuous cooling needs of large-flow water bodies.

[0009] Optionally, the multi-stage heating device includes a primary heater and a secondary heater. The primary heater includes an outer sleeve and an inner threaded tube. The inner threaded tube contains a heating element and is filled with a heating medium. The outer sleeve has an inlet and an outlet at its two ends, respectively. The structure of the secondary heater is the same as that of the primary heater.

[0010] By adopting the above technical solution, the first-stage heater in the multi-stage heating device adopts a composite structure of an outer sleeve and an inner threaded tube. The inner threaded tube integrates heating elements and is filled with heating medium. Water flows between the outer sleeve and the inner threaded tube. During operation, the heating elements heat the internal heating medium, and the heat is evenly transferred to the circulating water through the inner threaded tube wall. The threaded structure greatly increases the heat exchange contact area of ​​the water, ensuring uniform heating and stable temperature rise. At the same time, the heating elements are completely built into the threaded tube and do not come into direct contact with the water, avoiding contamination of the circulating water by impurities caused by corrosion and wear of the heating elements, and ensuring the cleanliness of the water exchanged.

[0011] Optionally, the buffer device includes a primary buffer tank and a secondary buffer tank, the primary buffer tank and the secondary buffer tank having the same structure, the primary buffer tank being located between the cooling device and the primary heater, and the secondary buffer tank being located between the primary heater and the secondary heater.

[0012] By adopting the above technical solution, a primary buffer tank is set between the cooling device and the primary heater, and a secondary buffer tank is set between the primary heater and the secondary heater, forming a two-stage buffer structure. The cooled water and the water heated in the first stage can enter the corresponding buffer tanks for static buffering, effectively eliminating the local temperature difference and water flow pulsation fluctuations generated during the cooling and step-by-step heating process, allowing the water to be fully mixed and the temperature to become more uniform. This avoids temperature deviation and oscillation after gas heat exchange caused by uneven water temperature, laying the foundation for precise temperature control.

[0013] Optionally, the heat exchange device includes a heat exchange box, in which several sets of first heat exchange plate groups and second heat exchange plate groups are arranged alternately, and gas flow channels are naturally formed between the first heat exchange plate groups and the second heat exchange plate groups. Each set of first heat exchange plate groups includes two first corrugated heat exchange plates, and each set of second heat exchange plate groups includes two second corrugated heat exchange plates. There are liquid flow channels between two adjacent first corrugated heat exchange plates and between two adjacent second corrugated heat exchange plates. The flow directions of the gas flow channels and the liquid flow channels are perpendicular to each other.

[0014] By adopting the above technical solution, the heat exchange device is equipped with multiple sets of staggered first heat exchange plate groups and second heat exchange plate groups. Each first heat exchange plate group consists of two first corrugated heat exchange plates, forming a liquid flow channel between the plates. Each second heat exchange plate group consists of two second corrugated heat exchange plates, also forming an independent liquid flow channel between the plates. Multiple gas flow channels are naturally formed between the two types of heat exchange plate groups arranged in a staggered manner, and the medium flow direction of the gas flow channel and the liquid flow channel are perpendicular to each other, which greatly improves the gas-liquid contact area and the heat exchange disturbance effect, allowing the compressed gas to carry out all-round and high-efficiency heat exchange with the constant temperature water, resulting in more complete heat exchange and more uniform temperature control.

[0015] Optionally, the gas treatment system further includes a purification device, a drying device, an oil removal device, and a pressure-stabilizing gas storage tank. A flow control device is installed at the outlet of the pressure-stabilizing gas storage tank. The purification device includes a purification cylinder. A first filter layer and a second filter layer are coaxially arranged inside the purification cylinder from the outside in. A first air inlet is provided between the purification cylinder and the first filter layer. A first air outlet is provided inside the second filter layer. The first filter layer uses a sintered stainless steel filter element, and the second filter layer uses ultra-fine glass fiber. A first annular inclined baffle and a second annular inclined baffle are provided between the purification cylinder and the first filter layer. The first annular inclined baffle is connected to the inner wall of the purification cylinder, and the second annular inclined baffle is connected to the first filter layer. The other ends of both the first and second annular inclined baffles are inclined downwards. The bottom of the purification cylinder has a drain port radially located between the inner wall of the purification cylinder and the outer wall of the second filter layer. A rotating baffle is located at the bottom of the purification cylinder, and an annular groove is formed along its outer circumference. Two locking slots are positioned opposite each other on the annular groove, with one end connected to the groove and the other extending to the bottom of the purification cylinder. Two locking protrusions are positioned opposite each other on the inner wall of the rotating baffle, corresponding one-to-one with the locking slots. The protrusions can slide into the annular groove through the locking slots, allowing the rotating baffle to rotate and completely cover the bottom of the purification cylinder. A baffle plate is located inside the rotating baffle, rotating synchronously with the baffle plate. The baffle plate is adapted to the drain port and can completely seal it.

[0016] By adopting the above technical solution, the gas treatment system is sequentially equipped with a purification device, a drying device, and an oil removal device to remove impurities and pre-treat the compressed gas. A pressure-stabilizing gas storage tank and a flow control device are also included to temporarily store the gas and control its flow, ensuring a stable flow input for gas heat exchange. The purification device is equipped with a first filter layer and a second filter layer. The first filter layer uses a sintered stainless steel filter element to intercept larger impurity particles, while the second filter layer uses ultra-fine glass fiber to pre-treat oil droplets. A first annular inclined baffle and a second annular inclined baffle are installed between the purification cylinder and the first filter layer to block large particles. Liquid water and large particulate impurities collide with the first and second annular inclined baffles and are pre-separated by gravity sedimentation, collecting at the bottom of the purification device. Impurities from the purification cylinder, the first filter layer, and the area between the first and second filter layers collect at the bottom and can be discharged from the drain port. The bottom of the purification cylinder is detachably and rotatably connected to a rotating baffle via an annular groove, a snap-fit ​​groove, and snap-fit ​​protrusions on the rotating baffle. A baffle plate is installed inside the rotating baffle plate, which can flexibly block or open the drain port. When the rotating baffle plate rotates, the baffle plate is misaligned with the drain port, the drain port opens, and impurities fall into the rotating baffle plate. When the rotating baffle plate continues to rotate until the snap-fit ​​groove and the snap-fit ​​protrusion correspond one-to-one, the rotating baffle plate can be removed from the purification cylinder, making it easy to clean. Disassembly and maintenance are simple and convenient.

[0017] Optionally, the drying device includes a drying cylinder with a spiral channel inside. A desiccant is disposed inside the spiral channel, and the channel wall of the spiral channel has a porous structure. The inlet of the spiral channel is located at the top of the drying cylinder and is provided with a first cap. The outlet of the spiral channel is located at the bottom of the drying cylinder and is provided with a second cap. A second air inlet is provided at the bottom of the drying cylinder, and a second air outlet is provided at the top. A partition baffle is provided between two adjacent spiral channels, and the partition baffle is arranged radially along the drying cylinder.

[0018] By adopting the above technical solution, a spiral channel is set inside the drying cylinder, and a desiccant is filled inside the spiral channel to dry the compressed gas. The spiral channel wall is designed with a porous structure, allowing the compressed gas to pass through the channel wall and come into contact with the desiccant. Adjacent spiral channels are isolated from each other by radially arranged baffles, forming multiple independent drying layer channels distributed vertically, preventing direct gas flow and short circuits. The overall flow direction of the compressed gas is from bottom to top. After entering from the bottom of the drying cylinder, the gas passes through each spiral channel layer by layer from bottom to top, making full contact with the desiccant in each layer, and completing deep drying layer by layer. At the same time, a first cap is set at the top of the drying cylinder and a second cap is set at the bottom, which can be opened quickly. The desiccant can flow directly down along the spiral channel, making it convenient for operators to discharge, add, and replace the desiccant in the multiple spiral channels, improving the convenience of daily equipment maintenance.

[0019] Optionally, the oil removal device includes an oil removal cylinder, inside which a filter cylinder is coaxially arranged. The filter cylinder is made of borosilicate glass fiber. The oil removal cylinder is provided with a third air inlet and a third air outlet. The third air inlet is connected to the interior of the filter cylinder. The third air outlet is located between the filter cylinder and the oil removal cylinder and is connected to the annular channel between the filter cylinder and the oil removal cylinder. An oil collection tray is detachably connected to the bottom of the filter cylinder.

[0020] By adopting the above technical solution, a filter cylinder made of borosilicate glass fiber is coaxially installed inside the oil removal device. Compressed gas enters the filter cylinder from the third air inlet of the oil removal cylinder, penetrates the filter cylinder to complete the oil removal and purification, and is discharged from the third air outlet through the annular channel between the filter cylinder and the oil removal cylinder. Oil mist and oil droplets in the gas are effectively trapped inside the filter cylinder, achieving precise oil removal. At the same time, a detachable oil collection tray is set at the bottom of the filter cylinder, which can collect the trapped oil. The oil collection tray can be disassembled regularly for oil cleaning and equipment maintenance, effectively avoiding secondary pollution of the gas caused by oil accumulation and continuously ensuring the cleanliness of the compressed gas.

[0021] Optionally, the pressure-stabilizing gas storage tank is provided with a fourth air inlet and a fourth air outlet. A safety valve is provided at the top of the pressure-stabilizing gas storage tank, and a drain valve is provided at the bottom. A pressure sensor is also provided inside the pressure-stabilizing gas storage tank, and the pressure sensor is connected to a pressure gauge.

[0022] By adopting the above technical solution, the pressure-stabilized gas storage tank is equipped with a dedicated fourth air inlet and a fourth air outlet, which can centrally store the pre-treated compressed gas, effectively buffering the pressure and flow fluctuations of the front-end airflow and achieving stable gas supply. The tank is equipped with a pressure sensor and a pressure gauge, which can monitor the pressure inside the tank in real time and realize visual pressure control. A safety valve is installed at the top, which can automatically release pressure when the pressure inside the tank exceeds the standard, avoiding damage to the equipment due to overpressure and improving operational safety. A drain valve is installed at the bottom, which can periodically discharge the condensate and trace impurities released from the gas inside the tank, avoiding the impact of water vapor and impurities on gas quality and further stabilizing the gas supply parameters.

[0023] Optionally, an activated carbon adsorption device is provided between the oil removal device and the pressure-stabilizing gas storage tank. The activated carbon adsorption device has a fifth air inlet and a fifth air outlet at its two ends, respectively. The fifth air inlet is connected to the third air outlet, and the fifth air outlet is connected to the fourth air inlet.

[0024] By adopting the above technical solution, an activated carbon adsorption device is added between the oil removal device and the pressure-stabilizing gas storage tank as the final fine purification treatment for gas purification. After oil removal, drying and purification, the compressed gas can complete the final fine purification treatment through the activated carbon adsorption device, effectively adsorbing residual trace oil molecules, fine dust, odor impurities and other impurities in the gas, further improving the cleanliness of the compressed gas, avoiding trace impurities from adhering to the inside of the heat exchange device, preventing the decrease in heat exchange efficiency and the deviation of temperature control accuracy, and ensuring the constant temperature heat exchange performance of the equipment in the long term.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up an integrated structure in which the gas treatment system and the water treatment system work together, the gas treatment system first pre-treats the compressed gas to stabilize the gas source state, and then the water treatment system achieves high-precision constant temperature control of the water body by relying on closed-loop refrigeration, multi-stage heating and multi-stage buffer structure. Finally, the constant temperature water is used to exchange heat with the compressed gas to improve the overall temperature control accuracy and temperature stability of the compressed gas, which can meet the industrial gas supply needs of high load and high precision. 2. The water treatment system is equipped with a cooling device, a multi-stage heating device, and a multi-stage buffer device, which can effectively eliminate local temperature differences and water flow fluctuations during the heating and cooling process of the water body, ensure uniform temperature of the circulating water and stable operating conditions, provide a stable temperature reference for precise gas-liquid heat exchange, and effectively avoid the problems of temperature deviation and oscillation after gas heat exchange. 3. It features a multi-stage progressive gas purification structure that integrates purification, deep drying, oil removal, and activated carbon terminal adsorption functions. This structure can remove large particulate impurities, oil droplets, water vapor, and trace amounts of fine impurities from compressed gas step by step, thereby comprehensively improving the cleanliness of compressed gas and preventing impurities from adhering to the heat exchange structure and affecting heat exchange efficiency and temperature control accuracy. 4. The drying device adopts a multi-layer independent spiral channel structure with baffles. The compressed gas penetrates each layer of the channel from bottom to top to complete the progressive drying, eliminating the problem of airflow short circuit, greatly extending the gas drying contact stroke, and achieving deep and uniform drying of the compressed gas. At the same time, the detachable cover structure facilitates quick replacement of the desiccant, and the equipment is highly convenient to maintain. 5. Equipped with a pressure-stabilizing gas storage tank and supporting detection, protection, and drainage structures, it can effectively buffer airflow pressure and flow fluctuations, achieve constant pressure and constant flow output of compressed gas, and also has real-time pressure monitoring, overpressure protection, and condensate drainage functions, which greatly improves the stability and safety of equipment operation and ensures continuous stability of gas supply parameters. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a schematic diagram illustrating the structure of the cooling device in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram illustrating the structure of the primary heater in an embodiment of this application.

[0029] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0030] Figure 5 This is a schematic diagram illustrating the structure of the purification device in an embodiment of this application.

[0031] Figure 6 This is a schematic diagram illustrating the structure of the annular groove in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram illustrating the structure of the drying device in an embodiment of this application.

[0033] Figure 8 This is a schematic diagram illustrating the structure of the oil removal device in an embodiment of this application.

[0034] Figure 9 This is a schematic diagram illustrating the structure of the activated carbon adsorption device in the embodiments of this application.

[0035] Figure 10 This is a schematic diagram illustrating the structure of a pressure-stabilizing gas storage tank in an embodiment of this application.

[0036] Figure 11 This is a schematic diagram illustrating the structure of the heat exchange device in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 11. Gas handling system; 12. Water treatment system; 121. Water storage tank; 13. Heat exchange device; 131. Heat exchange box; 132. First heat exchange plate assembly; 1321. First corrugated heat exchange plate; 133. Second heat exchange plate assembly; 1331. Second corrugated heat exchange plate; 134. Gas flow channel; 135. Liquid flow channel; 2. Cooling device; 21. Compressor; 22. Condenser; 23. Throttling valve; 24. Evaporator; 3. Heating device; 31. Primary heater; 311. Outer sleeve; 312. Inner threaded tube; 313. Heating element; 314. Heating medium; 32. Secondary heater; 4. Buffer device; 41. Primary buffer tank; 42. Secondary buffer tank; 5. Purification device; 51. Purification cylinder; 511. First air inlet; 512. First air outlet; 513. First annular inclined baffle; 514. Drain outlet 515. Annular groove; 516. Snap-fit ​​groove; 52. First filter layer; 521. Second annular inclined baffle; 53. Second filter layer; 54. Rotating baffle; 541. Snap-fit ​​protrusion; 542. Baffle plate; 6. Drying device; 61. Drying cylinder; 611. First cover; 612. Second cover; 613. Second air inlet; 614. Second air outlet; 62. Spiral channel; 63. Partition baffle; 7. Oil removal device 71. Oil removal cylinder; 711. Third air inlet; 712. Third air outlet; 713. Oil collection tray; 72. Filter cylinder; 8. Activated carbon adsorption device; 81. Fifth air inlet; 82. Fifth air outlet; 9. Pressure stabilizing air storage tank; 91. Fourth air inlet; 92. Fourth air outlet; 93. Safety valve; 94. Drain valve; 95. Pressure sensor; 96. Pressure gauge; 10. Flow control device; 101. Flow control valve. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0039] This application discloses a compressed gas control device.

[0040] like Figure 1 A compressed gas control device includes a gas processing system 11 and a water processing system 12. The gas processing system 11 is used to pre-treat the input compressed gas and control its flow rate. The water processing system 12 is used to cool, heat, buffer, and store circulating water at a constant temperature. The gas outlet of the gas processing system 11 and the water outlet of the water processing system 12 are connected to a heat exchange device 13 to exchange heat between the treated compressed gas and the high-precision circulating water, thereby outputting compressed gas with a stable temperature.

[0041] The water treatment system 12 includes a cooling device 2, a multi-stage heating device 3, multiple buffer devices 4, and a water storage tank 121. Buffer devices 4 are provided between the cooling device 2 and the heating device 3, as well as between two adjacent heating devices 3. The heating device 3 includes a primary heater 31 and a secondary heater 32. The buffer device 4 includes a primary buffer tank 41 and a secondary buffer tank 42. The outlet of the cooling device 2 is connected to the inlet of the primary buffer tank 41. The outlet of the primary buffer tank 41 is connected to the inlet of the primary heater 31. The outlet of the primary heater 31 is connected to the inlet of the secondary buffer tank 42. The outlet of the secondary buffer tank 42 is connected to the inlet of the secondary heater 32. The outlet of the secondary heater 32 is connected to the inlet of the water storage tank 121.

[0042] like Figure 2 The cooling device 2 includes a compressor 21, a condenser 22, a throttle valve 23, and an evaporator 24. The outlet of the compressor 21 is connected to the inlet of the condenser 22, the outlet of the condenser 22 is connected to the inlet of the throttle valve 23, the outlet of the throttle valve 23 is connected to the refrigerant inlet of the evaporator 24, and the refrigerant outlet of the evaporator 24 is connected to the inlet of the compressor 21, forming a closed refrigerant circulation loop. The refrigerant flows sequentially through the compressor 21, the condenser 22, the throttle valve 23, and the evaporator 24, and exchanges heat with the circulating water in the evaporator 24. After cooling the circulating water, it is discharged from the outlet and connected to the inlet of the primary buffer tank 41. like Figure 3 and Figure 4 The primary heater 31 includes an outer sleeve 311 and an inner threaded tube 312. The inner threaded tube 312 is coaxially disposed inside the outer sleeve 311. Both ends of the inner threaded tube 312 are connected to the tube wall of the outer sleeve 311. A heating element 313 is disposed inside the inner threaded tube 312, and the inner threaded tube 312 is filled with a heating medium 314. The inlet and outlet of the outer sleeve 311 are located at its two ends and are respectively connected to the primary buffer tank 41 and the secondary buffer tank 42. The secondary heater 32 has the same structure as the primary heater 31. Its inlet is connected to the secondary buffer tank 42, and its outlet is connected to the water storage tank 121.

[0043] The primary buffer tank 41 and the secondary buffer tank 42 have the same structure, both being sealed tank structures. The primary buffer tank 41 is located between the cooling device 2 and the primary heater 31, with its inlet connected to the outlet of the evaporator 24 and its outlet connected to the inlet of the primary heater 31. The secondary buffer tank 42 is located between the primary heater 31 and the secondary heater 32, with its inlet connected to the outlet of the primary heater 31 and its outlet connected to the inlet of the secondary heater 32.

[0044] The gas processing system 11 includes a purification device 5, a drying device 6, an oil removal device 7, a pressure-stabilizing gas storage tank 9, and a flow control device 10. The purification device 5, the drying device 6, the oil removal device 7, the pressure-stabilizing gas storage tank 9, and the flow control device 10 are arranged sequentially along the airflow direction and are interconnected.

[0045] like Figure 5 and Figure 6 The purification device 5 includes a purification cylinder 51. A first filter layer 52 and a second filter layer 53 are coaxially arranged inside the purification cylinder 51 from the outside in. A first air inlet 511 and a first air outlet 512 are located at the top of the purification cylinder 51. The first air inlet 511 is located between the purification cylinder 51 and the first filter layer 52, and the first air outlet 512 is located inside the second filter layer 53. The first filter layer 52 uses a sintered stainless steel filter element to intercept solid particulate impurities in the compressed gas. The second filter layer 53 uses... Ultra-fine glass fiber is used to perform preliminary treatment of oil mist in compressed gas. A first annular inclined baffle 513 and a second annular inclined baffle 521 are provided between the inner wall of the purification cylinder 51 and the outer wall of the first filter layer 52. The outer edge of the first annular inclined baffle 513 is fixedly connected to the inner wall of the purification cylinder 51, and the inner edge of the first annular inclined baffle 513 is inclined downward. The inner edge of the second annular inclined baffle 521 is fixedly connected to the outer wall of the first filter layer 52, and the outer edge of the second annular inclined baffle 521 is inclined downward. A drain port 514 is radially provided at the bottom of the purification cylinder 51, located between the inner wall of the purification cylinder 51 and the outer wall of the second filter layer 53. A rotating baffle 54 is provided at the bottom of the purification cylinder 51. An annular groove 515 is provided on the outer circumferential surface of the bottom of the purification cylinder 51. Two locking grooves 516 are arranged opposite each other on the annular groove 515. The locking grooves 516 are axially arranged, with one end of each locking groove 516 communicating with the annular groove 515 and the other end extending downward to the bottom surface of the purification cylinder 51. Two locking protrusions 541 are arranged opposite each other on the inner wall of the rotating baffle 54. The locking protrusions 541 correspond one-to-one with the locking grooves 516, and the locking protrusions 541 can pass through the locking grooves 516. The rotating baffle 54 slides into the annular groove 515 and slides within the annular groove 515, so that the rotating baffle 54 is rotatably connected to the purification cylinder 51 and completely covers the bottom of the purification cylinder 51. A baffle 542 is provided inside the rotating baffle 54. The baffle 542 rotates synchronously with the rotating baffle 54. The position of the baffle 542 corresponds to the drain port 514, which can completely block the drain port 514. When the rotating baffle 54 rotates to the point where the baffle 542 is misaligned with the drain port 514, the drain port 514 opens, and the deposits fall into the rotating baffle 54. When the rotating baffle 54 continues to rotate until the position of the locking protrusion 541 corresponds to the position of the locking groove 516, the rotating baffle 54 can be removed downwards to clean the deposits inside the rotating baffle 54.

[0046] like Figure 7The drying device 6 includes a drying cylinder 61, inside which a spiral channel 62 is provided. The channel wall of the spiral channel 62 has a porous structure, allowing compressed air to enter and exit. The spiral channel 62 is filled with a desiccant. The inlet of the spiral channel 62 is located at the top of the drying cylinder 61, and a first cover 611 is provided at the inlet. The outlet is located at the bottom of the drying cylinder 61, and a second cover 612 is provided at the outlet. The drying cylinder 61 is provided with a second air inlet 613 and a second air outlet 614. The second air inlet 613 is located at the bottom of the drying cylinder 61, and the second air outlet 614 is located at the top of the drying cylinder 61. A partition baffle 63 is provided between two adjacent spiral channels 62. The partition baffle 63 is arranged radially along the drying cylinder 61. The partition baffle 63 is used to change the flow path of the compressed air, forcing the compressed air to pass through each spiral channel 62 in sequence and to fully contact and dry the desiccant in the spiral channel 62.

[0047] like Figure 8 The oil removal device 7 includes an oil removal cylinder 71, and a filter cylinder 72 is coaxially arranged inside the oil removal cylinder 71. The filter cylinder 72 is made of borosilicate glass fiber and is used to filter and block oil. The top surface of the oil removal cylinder 71 is provided with a third air inlet 711 and a third air outlet 712. The third air inlet 711 is connected to the interior of the filter cylinder 72, and the third air outlet 712 is located at the annular channel between the filter cylinder 72 and the oil removal cylinder 71 and is connected to the annular channel. The bottom of the filter cylinder 72 is detachably connected to an oil collection tray 713. After the compressed gas enters the interior of the filter cylinder 72 through the third air inlet 711, the oil is intercepted inside the filter cylinder 72 and collects and slides down the inner wall of the filter cylinder 72 into the oil collection tray 713 at the bottom.

[0048] like Figure 9 An activated carbon adsorption device 8 is provided between the oil removal device 7 and the pressure-stabilizing gas storage tank 9. The activated carbon adsorption device 8 is fully filled with activated carbon, and a fifth air inlet 81 and a fifth air outlet 82 are respectively provided at both ends. The fifth air inlet 81 is connected to the third air outlet 712 of the oil removal device 7, and the fifth air outlet 82 is connected to the pressure-stabilizing gas storage tank 9.

[0049] like Figure 10The pressure-stabilizing gas storage tank 9 is provided with a fourth air inlet 91 and a fourth air outlet 92, and the height of the fourth air inlet 91 is lower than the height of the fourth air outlet 92. The fourth air inlet 91 is connected to the fifth air outlet 82 of the activated carbon adsorption device 8. A safety valve 93 is provided at the top of the pressure-stabilizing gas storage tank 9, which is used to automatically open and release pressure when the internal pressure of the pressure-stabilizing gas storage tank 9 exceeds a preset threshold. A drain valve 94 is provided at the bottom, which is used to periodically discharge the condensate deposited in the tank. A pressure sensor 95 is provided inside the pressure-stabilizing gas storage tank 9. The pressure sensor 95 is connected to a pressure gauge 96 through a wire. The pressure gauge 96 is installed on the outer wall of the pressure-stabilizing gas storage tank 9.

[0050] The flow control device 10 is located at the outlet of the pressure-stabilized gas storage tank 9. In this embodiment, the flow control device 10 uses a flow control valve 101 to regulate the flow rate of the output gas.

[0051] like Figure 11 The heat exchange device 13 includes a heat exchange box 131, which contains several sets of first heat exchange plate groups 132 and several sets of second heat exchange plate groups 133. The first heat exchange plate groups 132 and the second heat exchange plate groups 133 are arranged in parallel and staggered. Gas flow channels 134 are naturally formed between adjacent first heat exchange plate groups 132 and second heat exchange plate groups 133. Each set of first heat exchange plate groups 132 consists of two first corrugated heat exchange plates 1321, and each set of second heat exchange plate groups 133 consists of two second corrugated heat exchange plates 1331. Liquid flow channels 135 are formed between the two first corrugated heat exchange plates 1321 and between the two second corrugated heat exchange plates 1331. The flow direction of the gas flow channels 134 is perpendicular to the flow direction of the liquid flow channels 135.

[0052] The implementation principle of this application embodiment is as follows: During operation, external compressed gas enters the purification cylinder 51 through the first air inlet 511 of the purification device 5. The compressed gas flows from the outside to the inside of the purification cylinder 51, passing sequentially through the gap between the first annular inclined baffle 513 and the second annular inclined baffle 521, the first filter layer 52, and the second filter layer 53. Large particulate impurities and liquid water are intercepted and settled by the first annular inclined baffle 513 and the second annular inclined baffle 521. Solid particles are intercepted by the first filter layer 52, which uses a stainless steel sintered filter element, and oil mist is intercepted by the second filter layer 53, which uses ultra-fine glass fiber. The pretreated compressed gas is discharged through the first air outlet 512.

[0053] The purified compressed gas enters the drying cylinder 61 through the second air inlet 613. Guided by the partition baffle 63, the compressed gas passes through each layer of spiral channel 62 from bottom to top. The desiccant filled in each layer of spiral channel 62 adsorbs the water vapor in the compressed gas. The dried compressed gas is discharged through the second air outlet 614.

[0054] The dried compressed gas enters the filter cylinder 72 made of borosilicate glass fiber through the third air inlet 711. The compressed gas passes through the filter cylinder 72, and the oil mist is intercepted by the borosilicate glass fiber. The clean compressed gas flows into the annular channel between the filter cylinder 72 and the oil removal cylinder 71, and is discharged through the third air outlet 712. The intercepted oil droplets are collected in the oil collection tray 713 at the bottom of the filter cylinder 72.

[0055] Compressed gas discharged from the third outlet 712 enters the activated carbon adsorption device 8 through the fifth inlet 81. As it flows through the activated carbon filled in the activated carbon adsorption device 8, trace amounts of oil vapor and odors are adsorbed. Finally, the purified compressed gas is discharged through the fifth outlet 82 and enters the pressure-stabilized gas storage tank 9.

[0056] Compressed gas is temporarily stored in the pressure-stabilizing gas storage tank 9, and pressure fluctuations are buffered. Pressure sensor 95 monitors the pressure in the pressure-stabilizing gas storage tank 9 in real time, and pressure gauge 96 displays the pressure value. When the pressure in the pressure-stabilizing gas storage tank 9 exceeds the preset threshold, safety valve 93 automatically opens to release pressure. Drain valve 94 at the bottom of the pressure-stabilizing gas storage tank 9 periodically discharges the condensate that has precipitated in the tank. Flow control valve 101 at the outlet of the pressure-stabilizing gas storage tank 9 adjusts the compressed gas to a stable flow rate and then sends it to the gas inlet of heat exchange device 13.

[0057] Meanwhile, the water treatment system 12 operates synchronously. The refrigerant in the cooling device 2 circulates in a closed loop consisting of the compressor 21, condenser 22, throttle valve 23 and evaporator 24. In the evaporator 24, the low-temperature and low-pressure refrigerant exchanges heat with the circulating water flowing through the circulating water channel via the refrigerant channel. The temperature of the circulating water decreases, and the cooled circulating water enters the primary buffer tank 41 through the outlet of the evaporator 24 and then flows into the primary heater 31 after buffering.

[0058] In the primary heater 31, the heating medium 314 filled in the inner threaded tube 312 is heated by the heating element 313. The heat is evenly transferred through the tube wall of the inner threaded tube 312 to the circulating water flowing between the outer sleeve 311 and the inner threaded tube 312. The temperature of the circulating water initially rises. The circulating water heated by the primary heater 31 enters the secondary buffer tank 42, and after being buffered again, it flows into the secondary heater 32. The structure of the secondary heater 32 is the same as that of the primary heater 31. The circulating water is precisely heated and regulated in the secondary heater 32. The constant temperature circulating water that reaches the set temperature flows from the outlet of the secondary heater 32 into the storage tank 121 for storage.

[0059] The circulating water in the water storage tank 121 is sent to the liquid inlet of the heat exchange device 13 from its outlet end. In the heat exchange box 131 of the heat exchange device 13, the compressed gas flows through the gas flow channel 134 naturally formed between the first heat exchange plate group 132 and the second heat exchange plate group 133. The constant temperature circulating water flows through the liquid flow channel 135 formed between the two first corrugated heat exchange plates 1321 and the two second corrugated heat exchange plates 1331. The flow direction of the gas flow channel 134 is perpendicular to the flow direction of the liquid flow channel 135, so that the compressed gas and the constant temperature circulating water can fully exchange heat through the first corrugated heat exchange plate 1321 and the second corrugated heat exchange plate 1331. The temperature of the compressed gas quickly approaches the temperature of the constant temperature circulating water. The constant temperature compressed gas after heat exchange is discharged from the gas outlet of the heat exchange device 13 for use by external gas-using equipment.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A compressed gas control device, characterized in that: The system includes a gas treatment system (11) and a water treatment system (12). The water treatment system (12) includes a cooling device (2) and a multi-stage heating device (3). Buffer devices (4) are provided between the cooling device (2) and the heating device (3) and between two adjacent heating devices (3). A water storage tank (121) is connected to the end of the water treatment system (12). A heat exchange device (13) is connected to both the gas outlet of the gas treatment system (11) and the water outlet of the water storage tank (121).

2. The compressed gas control device according to claim 1, characterized in that: The cooling device (2) includes a compressor (21), a condenser (22), a throttle valve (23), and an evaporator (24). The compressor (21), the condenser (22), the throttle valve (23), and the evaporator (24) are connected in a cycle. The evaporator (24) is provided with a refrigerant flow channel and a circulating water flow channel. The refrigerant and the circulating water exchange heat in the evaporator (24) to reduce the temperature of the circulating water.

3. The compressed gas control device according to claim 1, characterized in that: The multi-stage heating device (3) includes a primary heater (31) and a secondary heater (32). The primary heater (31) includes an outer sleeve (311) and an inner threaded tube (312). The inner threaded tube (312) is provided with a heating element (313) and filled with a heating medium (314). The two ends of the outer sleeve (311) are respectively provided with an inlet and an outlet. The structure of the secondary heater (32) is the same as that of the primary heater (31).

4. The compressed gas control device according to claim 3, characterized in that: The buffer device (4) includes a primary buffer tank (41) and a secondary buffer tank (42). The primary buffer tank (41) and the secondary buffer tank (42) have the same structure. The primary buffer tank (41) is located between the cooling device (2) and the primary heater (31). The secondary buffer tank (42) is located between the primary heater (31) and the secondary heater (32).

5. The compressed gas control device according to claim 1, characterized in that: The heat exchange device (13) includes a heat exchange box (131), and several sets of first heat exchange plate groups (132) and second heat exchange plate groups (133) are arranged inside the heat exchange box (131). The first heat exchange plate groups (132) and the second heat exchange plate groups (133) are arranged alternately, and a gas flow channel (134) is naturally formed between the first heat exchange plate groups (132) and the second heat exchange plate groups (133). Each set of first heat exchange plate groups (132) includes two first corrugated heat exchange plates (1321), and each set of second heat exchange plate groups (133) includes two second corrugated heat exchange plates (1331). There are liquid flow channels (135) between two adjacent first corrugated heat exchange plates (1321) and between two adjacent second corrugated heat exchange plates (1331). The flow directions of the gas flow channels (134) and the liquid flow channels (135) are perpendicular to each other.

6. The compressed gas control device according to claim 1, characterized in that: The gas processing system (11) further includes a purification device (5), a drying device (6), an oil removal device (7), and a pressure-stabilizing gas storage tank (9). A flow control device (10) is provided at the outlet of the pressure-stabilizing gas storage tank (9). The purification device (5) includes a purification cylinder (51). A first filter layer (52) and a second filter layer (53) are coaxially arranged from the outside to the inside of the purification cylinder (51). A first air inlet (511) is provided between the purification cylinder (51) and the first filter layer (52). A first air outlet (512) is provided in the second filter layer (53). The first filter layer (52) is made of stainless steel sintered filter element, and the second filter layer (53) is made of ultra-fine glass fiber. A first annular inclined baffle (513) and a second annular inclined baffle (521) are provided between the purification cylinder (51) and the first filter layer (52). The first annular inclined baffle (513) is connected to the inner wall of the purification cylinder (51), and the second annular inclined baffle (521) is connected to the first filter layer (52). The other ends of the first annular inclined baffle (513) and the second annular inclined baffle (521) are both inclined downward. The bottom of the purification cylinder (51) has a drain port (514) radially formed. The drain port (514) is located between the inner wall of the purification cylinder (51) and the outer wall of the second filter layer (53). A rotating baffle (54) is provided at the bottom of the purification cylinder (51). An annular groove (515) is provided along the outer circumference of the bottom of the purification cylinder (51). Two snap-fit ​​grooves (516) are provided opposite to each other on the annular groove (515). One end of the snap-fit ​​groove (516) is connected to the annular groove (515), and the other end extends to the bottom of the purification cylinder (51). The inner wall of the rotating baffle (54) is provided with two snap-fit ​​grooves (516) opposite to each other. There are two snap-fit ​​protrusions (541), which correspond one-to-one with the snap-fit ​​grooves (516). The snap-fit ​​protrusions (541) can slide through the snap-fit ​​grooves (516) into the annular grooves (515), so that the rotating baffle (54) is rotatably connected to the purification cylinder (51) and completely covers the bottom of the purification cylinder (51). A baffle plate (542) is provided inside the rotating baffle (54). The baffle plate (542) can rotate synchronously with the rotating baffle (54). The baffle plate (542) is adapted to the drain port (514) and can completely block the drain port (514).

7. The compressed gas control device according to claim 6, characterized in that: The drying device (6) includes a drying cylinder (61), a spiral channel (62) is provided inside the drying cylinder (61), a desiccant is provided inside the spiral channel (62), the channel wall of the spiral channel (62) is a porous structure, the inlet of the spiral channel (62) is located at the top of the drying cylinder (61) and is provided with a first cover (611), the outlet of the spiral channel (62) is located at the bottom of the drying cylinder (61) and is provided with a second cover (612), a second air inlet (613) is provided at the bottom of the drying cylinder (61), a second air outlet (614) is provided at the top, and a partition baffle (63) is provided between two adjacent spiral channels (62), the partition baffle (63) is arranged radially along the drying cylinder (61).

8. The compressed gas control device according to claim 6, characterized in that: The oil removal device (7) includes an oil removal cylinder (71), and a filter cylinder (72) is coaxially arranged inside the oil removal cylinder (71). The filter cylinder (72) is made of borosilicate glass fiber. The oil removal cylinder (71) is provided with a third air inlet (711) and a third air outlet (712). The third air inlet (711) is connected to the inside of the filter cylinder (72). The third air outlet (712) is located between the filter cylinder (72) and the oil removal cylinder (71) and is connected to the annular channel between the filter cylinder (72) and the oil removal cylinder (71). An oil collection tray (713) is detachably connected to the bottom of the filter cylinder (72).

9. The compressed gas control device according to claim 8, characterized in that: The pressure-stabilizing gas storage tank (9) is provided with a fourth air inlet (91) and a fourth air outlet (92). The pressure-stabilizing gas storage tank (9) is provided with a safety valve (93) at the top and a drain valve (94) at the bottom. The pressure-stabilizing gas storage tank (9) is also provided with a pressure sensor (95), which is connected to a pressure gauge (96).

10. The compressed gas control device according to claim 9, characterized in that: An activated carbon adsorption device (8) is provided between the oil removal device (7) and the pressure-stabilizing gas storage tank (9). The activated carbon adsorption device (8) has a fifth air inlet (81) and a fifth air outlet (82) at its two ends. The fifth air inlet (81) is connected to the third air outlet (712), and the fifth air outlet (82) is connected to the fourth air inlet (91).

Images