Dehydration device for compressed air

Abstract

The utility model discloses a dehydration device for compressed air. The dehydration device comprises a dehydration unit and a vortex cooling unit, the dehydration unit comprises a first subsystem and a second subsystem, the first subsystem comprises a first dehydration heat exchanger, and the second subsystem comprises a second dehydration heat exchanger; the vortex cooling unit comprises a vortex cooler, the vortex cooler comprises a cold air exhaust port and a hot air exhaust port, and the cold air exhaust port and the hot air exhaust port of the vortex cooler are connected with tube pass inlets of the first dehydration heat exchanger and the second dehydration heat exchanger respectively. According to the dewatering device, moisture in compressed air discharged by the air compressor can be efficiently removed, the dryness of the air is improved, and the air supply requirements of various pneumatic switches or adjusting valve pieces and air source pump pieces are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressed air treatment, in particular to a compressed air dewatering device. BACKGROUND

[0002] In the operation of VOCs recovery and treatment equipment, air compressors are often used to provide compressed air to meet the gas supply requirements of various pneumatic switches or regulating valves and gas source pumps. However, the compressed air discharged by the air compressor contains a high amount of water, and if these water is not treated, it may have an adverse effect on the operating performance and service life of the valve or pump. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to provide a compressed air dewatering device, which can efficiently remove water from the compressed air discharged by the air compressor, improve the dryness of the gas, and meet the gas supply requirements of various pneumatic switches or regulating valves and gas source pumps.

[0004] TECHNICAL SCHEME: The embodiments of the present application provide a compressed air dewatering device, which comprises a dewatering unit and a vortex cooling unit; the dewatering unit comprises a first subsystem and a second subsystem, the first subsystem comprises a first dewatering heat exchanger, and the second subsystem comprises a second dewatering heat exchanger; the vortex cooling unit comprises a vortex cooler, the vortex cooler comprises a cold gas outlet and a hot gas outlet, and the cold gas outlet and the hot gas outlet of the vortex cooler are respectively connected with the tube side inlets of the first dewatering heat exchanger and the second dewatering heat exchanger.

[0005] In some embodiments, the cold gas outlet of the vortex cooler is respectively connected with the inlets of a first cold gas valve and a second cold gas valve, the outlet of the first cold gas valve is connected with the tube side inlet of the first dewatering heat exchanger, and the outlet of the second cold gas valve is connected with the tube side inlet of the second dewatering heat exchanger.

[0006] In some embodiments, the hot gas outlet of the vortex cooler is respectively connected with the inlets of a first hot gas valve and a second hot gas valve, the outlet of the first hot gas valve is connected with the tube side inlet of the first dewatering heat exchanger, and the outlet of the second hot gas valve is connected with the tube side inlet of the second dewatering heat exchanger.

[0007] In some embodiments, the vortex cooler comprises a compressed air inlet; the compressed air inlet of the vortex cooler is used to send in compressed air at room temperature.

[0008] In some embodiments, the first subsystem further comprises a first air valve and a first dehydrated air valve; an inlet of the first air valve is used to send in compressed air at normal temperature, an outlet of the first air valve is connected with an inlet of the shell side of the first dehydrated heat exchanger; an inlet of the first dehydrated air valve is connected with an outlet of the shell side of the first dehydrated heat exchanger, and an outlet of the first dehydrated air valve sends out compressed air after dehydration.

[0009] In some embodiments, the first subsystem further comprises a first dehydrated valve, and an inlet of the first dehydrated valve is connected with a bottom outlet of the shell side of the first dehydrated heat exchanger.

[0010] In some embodiments, the second subsystem further comprises a second air valve and a second dehydrated air valve; an inlet of the second air valve is used to send in compressed air at normal temperature, an outlet of the second air valve is connected with an inlet of the shell side of the second dehydrated heat exchanger; an inlet of the second dehydrated air valve is connected with an outlet of the shell side of the second dehydrated heat exchanger, and an outlet of the second dehydrated air valve sends out compressed air after dehydration.

[0011] In some embodiments, the second subsystem further comprises a second dehydrated valve, and an inlet of the second dehydrated valve is connected with a bottom outlet of the shell side of the second dehydrated heat exchanger.

[0012] In some embodiments, the vortex cooling unit further comprises a first valve connected with a bottom outlet of the tube side of the first dehydrated heat exchanger.

[0013] In some embodiments, the vortex cooling unit further comprises a second valve connected with a bottom outlet of the tube side of the second dehydrated heat exchanger.

[0014] In some embodiments, the vortex cooling unit further comprises a silencer connected with gas outlets of the first valve and the second valve respectively.

[0015] Beneficial effects: The application provides a compressed air dehydrating device, which comprises a dehydrating unit and a vortex cooling unit; the dehydrating unit comprises a first subsystem and a second subsystem, the first subsystem comprises a first dehydrated heat exchanger, and the second subsystem comprises a second dehydrated heat exchanger; the vortex cooling unit comprises a vortex cooler, and the vortex cooler comprises a cold gas outlet and a hot gas outlet, and the cold gas outlet and the hot gas outlet of the vortex cooler are connected with inlets of tube sides of the first dehydrated heat exchanger and the second dehydrated heat exchanger respectively. The dehydrating device of the application can efficiently remove water in compressed air discharged by an air compressor, improve the dryness of the gas, and meet the gas supply requirements of various pneumatic switches or regulating valves and gas source pumps. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1This is a schematic diagram of the structure of a compressed air dehydration device according to an embodiment of this application;

[0017] Reference numerals: 100-Dehydration unit, 101-First air valve, 111-Second air valve, 102-First dehydration air valve, 112-Second dehydration air valve, 103-First dehydration valve, 113-Second dehydration valve, 104-First dehydration heat exchanger, 114-Second dehydration heat exchanger; 200-Vortex cooling unit, 201-First cold air valve, 211-Second cold air valve, 202-First hot air valve, 212-Second hot air valve, 203-First valve, 213-Second valve, 204-Vortex cooler, Silencer-205. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] This application provides a device for dehydrating compressed air, such as... Figure 1 As shown, the dehydration device of this application includes a dehydration unit 100 and a vortex cooling unit 200. The dehydration unit 100 includes a first subsystem and a second subsystem. The first subsystem includes a first dehydration heat exchanger 104, and the second subsystem includes a second dehydration heat exchanger 114. The vortex cooling unit 200 includes a vortex cooler 204. The valves of the first dehydration heat exchanger 104, the second dehydration heat exchanger 114, and the vortex cooler 204 in this application dehydrate the water-containing compressed air discharged from the air compressor. The first and second subsystems operate alternately, completing the entire process of refrigeration dehydration, ice melting and drainage, and waiting for the air to cool down. The dehydration device of this application has no moving parts, requires no additional power input for moving parts, poses no risk of sparks, and has no magnetic / radio frequency interference. It is portable, lightweight, and inexpensive, thus significantly reducing operating costs.

[0022] In some embodiments, the first dehydration heat exchanger 104 and the second dehydration heat exchanger 114 of this application are vertical spiral tube heat exchangers. The first dehydration heat exchanger 104 and the second dehydration heat exchanger 114 have five inlets / outlets. In this embodiment, the five inlets / outlets are: a water-containing compressed air inlet at the lower end of the shell side, a dehydration compressed air outlet at the upper end of the shell side, a dehydration outlet at the bottom end of the shell side, a hot / cold compressed air inlet (tube side inlet) at the top end of the tube side, and a hot / cold compressed air outlet (tube side bottom outlet) at the bottom end of the tube side. In this embodiment, two parallel first dehydration heat exchangers 104 and second dehydration heat exchangers 114 are provided to cool and dehydrate the incoming room temperature (25℃~30℃, varying depending on ambient temperature) water-containing compressed air.

[0023] In some embodiments, the first subsystem further includes a first air valve 101, a first dehydration air valve 102, and a first dehydration valve 103; the inlet of the first air valve 101 is used to supply ambient temperature compressed air, and the outlet of the first air valve 101 is connected to the water-containing compressed air inlet (shell-side inlet) at the lower end of the shell side of the first dehydration heat exchanger 104; the inlet of the first dehydration air valve 102 is connected to the dehydration compressed air outlet (shell-side outlet) at the upper end of the shell side of the first dehydration heat exchanger 104, and the outlet of the first dehydration air valve 102 supplies dehydrated compressed air; the inlet of the first dehydration valve 103 is connected to the dehydration outlet (shell-side bottom outlet) at the bottom end of the shell side of the first dehydration heat exchanger 104.

[0024] In some embodiments, the second subsystem further includes a second air valve 111, a second dehydration air valve 112, and a second dehydration valve 113; the inlet of the second air valve 111 is used to supply ambient temperature compressed air, and the outlet of the second air valve 111 is connected to the water-containing compressed air inlet (shell-side inlet) at the lower end of the shell side of the second dehydration heat exchanger 114; the inlet of the second dehydration air valve 112 is connected to the dehydration compressed air outlet (shell-side outlet) at the upper end of the shell side of the second dehydration heat exchanger 114, and the outlet of the second dehydration air valve 112 supplies dehydrated compressed air; the inlet of the second dehydration valve 113 is connected to the dehydration outlet (shell-side bottom outlet) at the bottom end of the shell side of the second dehydration heat exchanger 114.

[0025] In some embodiments, the vortex cooling unit 200 includes a vortex cooler 204, which is connected to the first dehydration heat exchanger 104 and the second dehydration heat exchanger 114, respectively.

[0026] In some specific applications, vortex coolers and dehydration heat exchangers are made of 316L or higher stainless steel, which is durable and highly corrosion resistant.

[0027] In some specific embodiments, the vortex cooler 204 is a vortex tube self-cooling generator. The vortex cooler 204 has three pipe ports: a normal temperature compressed air inlet at the side end (compressed air inlet), a compressed air cold air outlet at the short side cold pipe end (cold air outlet), and a compressed air hot air outlet at the long side hot pipe end (hot air outlet). The working principle of the vortex cooler 204 is to generate cold and hot air by utilizing the strong vortex flow generated by the fluid between the rotating blades, so that the liquid and gas media form a strong convective heat transfer principle, thereby providing a cold source and a heat source for the first dehydration heat exchanger 104 and the second dehydration heat exchanger 114. The working process of the vortex cooler 204 is as follows: Compressed air at a certain pressure (adjustable 0.6MPa) and a normal temperature (25℃~30℃, varying depending on ambient temperature) enters the vortex cooler 204 through the normal temperature compressed air inlet at the side end. The entering compressed air undergoes high-speed swirling motion within the vortex cooler 204. The airflow near the center of the pipe has a high rotational angular velocity, while the airflow near the pipe wall has a low rotational angular velocity. This causes continuous friction between the airflows, transferring the kinetic energy of the airflow near the center of the pipe to the airflow near the outer wall. Within the long side heat pipe, after vortex exchange, the airflow is divided into two streams: one is hot air, and the other is cold air. The internal energy of the inner vortex gas is continuously converted into rotational kinetic energy, causing its temperature to decrease; while the outer gas gains kinetic energy through continuous friction, and its internal energy gradually increases, causing its temperature to rise. At the end of the heat pipe, a portion of the compressed air is converted into hot air (80℃~100℃: adjustable) through a regulating valve. The compressed air is discharged from the hot gas end; the remaining compressed air returns at a low speed through the center of the rotating airflow entering the heat pipe. This cold airflow forms ultra-low temperature cold air (-15℃~-25℃: adjustable) through the center of the generator and is discharged from the cold gas end of the vortex cooler 204; a small adjustable valve (first hot gas valve 202 and second hot gas valve 212) is installed at the hot gas pipe end, with a manual adjustment knob. By adjusting the knob, the temperature and flow rate of the cold airflow can be manually adjusted. The lower the cooling coefficient is, the lower the temperature of the cold air.

[0028] The vortex cooler 204 of this application requires no additional refrigerant; that is, the vortex cooler does not need to use Freon or other chemical refrigerants, but directly utilizes its own compressed air for cooling or defrosting. This reduces the use of chemical refrigerants and related environmental problems. It is also flexible in adjustment: the vortex cooler can control the cooling effect and temperature range by adjusting the input pressure and flow rate of the compressed air. This allows it to meet the cooling needs of different applications.

[0029] In some embodiments, the compressed air inlet of the vortex cooler 204 is used to supply ambient temperature compressed air; the cold air outlet of the vortex cooler 204 is connected to the inlet of the first cold air valve 201 and the second cold air valve 211 respectively, the outlet of the first cold air valve 201 is connected to the tube-side inlet of the first dehydration heat exchanger 104, and the outlet of the second cold air valve 211 is connected to the tube-side inlet of the second dehydration heat exchanger 114; the hot air outlet of the vortex cooler 204 is connected to the inlet of the first hot air valve 202 and the second hot air valve 212 respectively, the outlet of the first hot air valve 202 is connected to the tube-side inlet of the first dehydration heat exchanger 104, and the outlet of the second hot air valve 212 is connected to the tube-side inlet of the second dehydration heat exchanger 114.

[0030] In some embodiments, the vortex cooling unit 200 further includes a first valve 203 and a second valve 213, wherein the first valve 203 is connected to the bottom outlet of the tube side of the first dehydration heat exchanger 104; and the second valve 213 is connected to the bottom outlet of the tube side of the second dehydration heat exchanger 114.

[0031] In some embodiments, the vortex cooling unit 200 further includes a muffler 205, which is connected to the outlet of the first valve 203 and the second valve 213 respectively.

[0032] Work methods:

[0033] (1) First subsystem cooling and dehydration (time T1): Open the first cold air valve 201, the second hot air valve 212, the first air valve 101, the first dehydration air valve 102 and the second dehydration valve 113, and at the same time close the second cold air valve 211, the first hot air valve 202, the second air valve 111 and the second dehydration air valve 112.

[0034] The water-containing compressed air first enters the vortex cooler 204 to generate cold air, which enters through the inlet of the first cold air valve 201 and exits through the outlet of the first cold air valve 201. It then enters the tube side of the first dehydration heat exchanger 104 from the top, and the cold air acts as a cold source to provide a cold field outside the tubes. At the same time, another stream of water-containing compressed air enters through the inlet of the first air valve 101 and exits through the outlet of the first air valve 101. It then enters the shell-side cold field of the first dehydration heat exchanger 104 from the bottom. The room temperature compressed air is cooled, frozen, and dehydrated in the cold field, and the dry compressed air is discharged from the top of the shell side of the first dehydration heat exchanger 104. The air enters the first dehydration air valve 102 and is delivered to the required location through the outlet of the first dehydration air valve 102; at the same time, the cold air in the tube side absorbs heat and rises in temperature, and is discharged from the bottom of the tube side of the first dehydration heat exchanger 104, arrives at the inlet of the first valve 203, and is directly discharged through the outlet of the first valve 203. The silencer 205 connected to the air outlet of the first valve 203 performs noise reduction treatment; as time goes on, the ice on the outside of the tube of the first dehydration heat exchanger 104 becomes thicker and thicker. When the time reaches the cycle T1, the ice formation mode on the outside of the tube of the first dehydration heat exchanger 104 switches to the de-icing mode;

[0035] First subsystem ice melting and drainage (time T2 + time T3): Open the second cold air valve 211, the first hot air valve 202, the second air valve 111, the second dehydration air valve 112, and the first dehydration valve 103, while closing the first cold air valve 201, the second hot air valve 212, the first air valve 101, and the first dehydration air valve 102. A stream of water-containing compressed air first enters the vortex cooler 204 to generate hot air, which enters from the inlet of the first hot air valve 202 and is sent out through the outlet of the first hot air valve 202. It enters the tube side from the top of the first dehydration heat exchanger 104. The hot air acts as a heat source to provide a heating field for the outside of the tubes, causing the ice that has accumulated outside the tubes to absorb heat and melt into water. The water flows to the bottom of the shell side and is discharged, entering the first dehydration valve 103 and being discharged through the outlet of the first dehydration valve 103. As time increases, the complete ice melting is completed within the period T2, and it enters the waiting mode for time T3.

[0036] At the same time, the second subsystem enters the refrigeration and dehydration mode (time T1). Another stream of water-containing compressed air enters from the inlet of the second air valve 111 and is sent out through the outlet of the second air valve 111. It enters the shell-side cold field of the second dehydration heat exchanger 114 from the lower part. The room temperature compressed air is cooled, frozen and dehydrated in the cold field. The dry compressed air is discharged from the upper part of the shell side of the second dehydration heat exchanger 114 and enters the second dehydration air valve 112. It is then delivered to the required location through the outlet of the second dehydration air valve 112.

[0037] Meanwhile, the cold air inside the tube absorbs heat and rises in temperature before being discharged from the bottom of the tube side of the second dehydration heat exchanger 114, reaching the inlet of the second valve 213, and being discharged directly through the outlet of the second valve 213. As time goes on, the ice outside the tubes of the second dehydration heat exchanger 114 becomes thicker and thicker. When the time reaches cycle T1, the ice formation mode outside the tubes of the second dehydration heat exchanger 114 switches to the de-icing mode.

[0038] The second subsystem, ice melting and drainage (time T2 + time T3): Open the first cold air valve 201, the second hot air valve 212, the first air valve 101, the first dehydration air valve 102, and the second dehydration valve 113, while simultaneously closing the second cold air valve 211, the first hot air valve 202, the second air valve 111, and the second dehydration air valve 112; a stream of water-containing compressed air first enters the vortex cooler 204 to generate hot air, which enters from the inlet of the second hot air valve 212 and is sent out through the outlet of the second hot air valve 212, entering the tube side from the top of the second dehydration heat exchanger 114. The hot air acts as a heat source to provide a heating field for the outside of the tubes, causing the ice that has accumulated outside the tubes to absorb heat and melt into water. The water flows to the bottom of the shell side and is discharged, entering the second dehydration valve 113 and being discharged through the outlet of the second dehydration valve 113. As time increases, the complete ice melting is completed within the period T2, and it enters the waiting mode for time T3;

[0039] In this cycle, the first dehydration heat exchanger 104, the second dehydration heat exchanger 114, and the vortex cooler 204 switch periodically with each other by means of valves.

[0040] Application Example: Taking the first subsystem as an example: A portion of the compressed air containing water vapor at room temperature (approximately 10%–20% of the air compressor's discharge volume: adjustable) is compressed from the air compressor and enters the vortex tube of the vortex cooler 204 from the side nozzle into the self-cooling generator. Through a series of actions including vortex flow, expansion acceleration, high-speed rotation, vortex heat transfer, energy separation, temperature regulation, and gas discharge, both low-temperature compressed air (cold air) and high-temperature compressed air (hot air) are simultaneously generated. The cold air enters the tube side (i.e., inside the tube) of the first dehydration heat exchanger 104 through the first cold air valve 201, and the gas gradually moves downwards along the spiral coil. Another portion of the compressed air containing water vapor at room temperature (approximately 80%–90% of the air compressor's discharge volume: adjustable) is compressed from the air compressor and then... An air valve 101 enters the shell side (i.e., outside the tube) of the first dehydration heat exchanger 104, and the gas gradually rises along the spiral coil. The ambient temperature gas (hot fluid) outside the tube and the low temperature gas (cold fluid) inside the tube undergo heat conduction and convection heat transfer through the tube wall. Heat is transferred from the hot fluid outside the tube to the cold fluid inside the tube through the tube wall. The low temperature gas inside the tube absorbs heat and rises to about 25°C, while the ambient temperature gas outside the tube releases heat and cools down to -5°C to -15°C. The water vapor in the gas condenses on the outer wall of the spiral tube due to the drop to the freezing point. The dehydrated and dry compressed air is discharged through the first dehydration air valve 102 to provide air source for pneumatic valves or pumps. When the ice on the outer wall of the spiral tube accumulates for a certain period (refrigeration dehydration cycle T1), the first dehydration heat exchanger 104 in the first subsystem enters the ice melting and drainage mode. At this time, the second dehydration heat exchanger 114 in the second subsystem starts the refrigeration dehydration mode: the first air valve 101 and the first dehydration air valve 102 are closed, and the second air valve 111 and the second dehydration air valve 112 are opened. Another part of the compressed air containing water vapor at room temperature (about 80% to 90% of the air compressor's discharge volume, adjustable) is compressed from the air compressor and enters the shell side (i.e., outside the tubes) of the second dehydration heat exchanger 114 through the second air valve 111. After being cooled and dehydrated, the dry compressed air is discharged through the second dehydration air valve 112, providing a continuous air source for pneumatic valves or pumps. At the same time, the first cold air valve 201 is closed and the second cold air valve 211 is opened. The cold air generated by the vortex cooler 204 enters the tube side (i.e., inside the tubes) of the second dehydration heat exchanger 114 through the second cold air valve 211.

[0041] First subsystem de-icing and drainage mode: At this moment, the first hot gas valve 202 and the first dehydration valve 103 are opened. The hot gas generated by the vortex cooler 204 enters the tube side (i.e., inside the tube) of the first dehydration heat exchanger 104A through the first hot gas valve 202. The ice (cold side) that has accumulated on the outer wall of the tube and the high-temperature gas (hot fluid) inside and outside the tube undergo heat conduction and convection heat transfer through the tube wall. The heat is transferred from the hot fluid inside the tube to the cold substance outside the tube through the tube wall. The ice that has accumulated on the outer wall of the tube absorbs heat and melts into water, which flows to the bottom of the shell side by gravity and is discharged from the first dehydration valve 103. The hot gas inside the tube releases heat and drops to room temperature, and is discharged to the atmosphere through the first valve 203 and the silencer 205, completing one defrosting and drainage process of the first subsystem (de-icing and drainage cycle T2). Thus, the first subsystem completes the dehydration and de-icing process of the compressed air containing water vapor and enters the waiting time (waiting cycle is T3).

[0042] The first and second subsystems operate alternately, completing the entire process of refrigeration, dehydration, ice melting, drainage, and waiting in both subsystems. The complete dehydration cycle is T, where T = T1 + T2 + T3, and T1 = T2 + T3. The system continuously outputs dry compressed air as required by the equipment.

[0043] The dehydration device of this application features a compact system design, occupies little space, and is easy to install and maintain. It can be used in various limited spaces, improving space utilization. Furthermore, the dehydration device is environmentally friendly and pollution-free. The dehydration heat exchanger consumes no nitrogen, steam, or hot water during refrigeration or defrosting, and produces no waste during refrigeration; there are no residues requiring cleaning, meeting environmental protection requirements. The vortex cooler and dehydration heat exchanger in this application's dehydration device have no moving parts, reducing the failure rate and maintenance needs, resulting in high reliability and stability. It is suitable for long-term continuous operation and exhibits strong reliability.

[0044] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0045] The above provides a detailed description of a compressed air dehydration device provided in the embodiments of this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A dehydration device for compressed air, characterized in that, It includes a dehydration unit (100) and a vortex cooling unit (200); the dehydration unit (100) includes a first subsystem and a second subsystem, the first subsystem including a first dehydration heat exchanger (104) and the second subsystem including a second dehydration heat exchanger (114); the vortex cooling unit (200) includes a vortex cooler (204), the vortex cooler (204) including a cold air outlet and a hot air outlet, the cold air outlet and the hot air outlet of the vortex cooler being respectively connected to the tube-side inlet of the first dehydration heat exchanger (104) and the second dehydration heat exchanger (114).

2. The compressed air dehydration device according to claim 1, characterized in that, The cold air outlet of the vortex cooler (204) is connected to the inlet of the first cold air valve (201) and the second cold air valve (211), respectively. The outlet of the first cold air valve (201) is connected to the tube-side inlet of the first dehydration heat exchanger (104), and the outlet of the second cold air valve (211) is connected to the tube-side inlet of the second dehydration heat exchanger (114).

3. The compressed air dehydration device according to claim 2, characterized in that, The hot gas outlet of the vortex cooler (204) is connected to the inlet of the first hot gas valve (202) and the second hot gas valve (212), respectively. The outlet of the first hot gas valve (202) is connected to the tube-side inlet of the first dehydration heat exchanger (104), and the outlet of the second hot gas valve (212) is connected to the tube-side inlet of the second dehydration heat exchanger (114); and / or, The vortex cooler (204) includes a compressed air inlet; the compressed air inlet of the vortex cooler (204) is used to supply ambient temperature compressed air.

4. The compressed air dehydration device according to claim 1, characterized in that, The first subsystem further includes a first air valve (101) and a first dehydration air valve (102); the inlet of the first air valve (101) is used to supply ambient temperature compressed air, and the outlet of the first air valve (101) is connected to the shell-side inlet of the first dehydration heat exchanger (104); the inlet of the first dehydration air valve (102) is connected to the shell-side outlet of the first dehydration heat exchanger (104), and the outlet of the first dehydration air valve (102) supplies out dehydrated compressed air.

5. The compressed air dehydration device according to claim 4, characterized in that, The first subsystem also includes a first dehydration valve (103), the inlet of which is connected to the bottom outlet of the shell side of the first dehydration heat exchanger (104).

6. The compressed air dehydration device according to claim 1, characterized in that, The second subsystem also includes a second air valve (111) and a second dehydration air valve (112); the inlet of the second air valve (111) is used to supply ambient temperature compressed air, and the outlet of the second air valve (111) is connected to the shell-side inlet of the second dehydration heat exchanger (114); the inlet of the second dehydration air valve (112) is connected to the shell-side outlet of the second dehydration heat exchanger (114), and the outlet of the second dehydration air valve (112) supplies out dehydrated compressed air.

7. The compressed air dehydration device according to claim 6, characterized in that, The second subsystem also includes a second dehydration valve (113), the inlet of which is connected to the bottom outlet of the shell side of the second dehydration heat exchanger (114).

8. The compressed air dehydration device according to claim 1, characterized in that, The vortex cooling unit (200) also includes a first valve (203), which is connected to the bottom outlet of the tube side of the first dehydration heat exchanger (104).

9. The compressed air dehydration device according to claim 8, characterized in that, The vortex cooling unit (200) also includes a second valve (213), which is connected to the bottom outlet of the tube side of the second dehydration heat exchanger (114).

10. The compressed air dehydration device according to claim 9, characterized in that, The vortex cooling unit (200) also includes a silencer (205), which is connected to the outlet of the first valve (203) and the second valve (213) respectively.

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