Drying system for reducing moisture content of compressed air
By integrating refrigeration and adsorption drying equipment and utilizing refrigeration mechanisms and heat exchange pipelines, multi-stage drying and heat recycling of compressed air are achieved, solving the problem of high energy consumption in existing technologies, improving equipment efficiency and reducing moisture content.
Patent Information
- Application Number
- CN202511502364.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2025-12-12
AI Technical Summary
In existing technologies, freeze drying and adsorption drying equipment require independent mechanical structures, consume a lot of energy, and are difficult to integrate effectively.
By integrating refrigerated drying equipment and adsorption drying equipment into one unit, and through the design of the refrigeration mechanism and heat exchange pipeline, multi-stage drying of compressed air and recycling of heat are achieved.
It reduces energy consumption, improves the overall efficiency of the equipment, reduces moisture in compressed air, protects the equipment, and ensures the normal operation of downstream processes.
Smart Images
Figure CN121103101A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the drying technical field, especially to a drying system for reducing water content of compressed air. BACKGROUND
[0002] In many industrial applications, air compressors are used in compressed air supply systems, and the compressed air often contains a certain amount of moisture, too much moisture not only affects the performance of the air compressor, but also can cause corrosion of pipes, valves and other equipment, shorten the service life of the equipment, and even affect the normal operation of the downstream process.
[0003] Most of the air drying devices on the market currently use refrigeration drying and adsorption drying, and in the prior art, the two devices use different principles, and the two need to use relatively independent mechanical structures to operate, which has high energy consumption, and there is a possibility of structural integration and reducing energy consumption. SUMMARY
[0004] Therefore, the embodiments of the present application provide a drying system for reducing water content of compressed air, mainly aiming to integrate the structures of the refrigeration drying device and the adsorption drying device, and reduce energy consumption.
[0005] To achieve the above purpose, the present application mainly provides the following technical solutions:
[0006] The embodiments of the present application provide a drying system for reducing water content of compressed air, which comprises a main body and a refrigeration mechanism.
[0007] The main body comprises a pre-cooler, an evaporator and a steam-water separator connected in sequence, the pre-cooler is provided with first heat exchange pipes, the evaporator is provided with second heat exchange pipes, the outlet of the steam-water separator is connected to the inlet of the first heat exchange pipes, and the outlet of the first heat exchange pipes is connected to the inlet of the first adsorption tower and the inlet of the second adsorption tower.
[0008] The refrigeration mechanism comprises a compressor, a machine shell, a fan and a cooling coil arranged in the machine shell in sequence, the outlet of the cooling coil is connected to the inlet of the compressor, the outlet of the compressor is connected to the inlet of the second heat exchange pipes, the outlet of the second heat exchange pipes is connected to the inlet of the cooling coil, the outlet of the machine shell is connected to the inlet of a heater, and the outlet of the heater is connected to the outlet end of the first adsorption tower and the outlet end of the second adsorption tower.
[0009] The purpose of the present application and the technical problems thereof can also be further realized by the following technical measures.
[0010] Optionally, the steam-water separator comprises a shell and a central pipe vertically arranged in the shell, an annular baffle plate is arranged on the periphery of the central pipe, a plurality of baffles are arranged in the central pipe in a staggered manner, the outlet of the evaporator is connected to the lower end of the central pipe, and the upper end outlet of the shell is connected to the inlet of the first heat exchange pipe.
[0011] Optionally, the first drain pipe is arranged, one end of the first drain pipe is connected to the lower end of the shell on the periphery of the central pipe, and a first drain valve is arranged on the first drain pipe.
[0012] Optionally, the inverted U-shaped pipe is arranged, one end of the inverted U-shaped pipe is connected to the lower end side of the pre-cooler, the other end is connected to the lower end side of the evaporator, and the upper end outlet of the evaporator is connected to the lower end of the central pipe.
[0013] Optionally, the water collecting groove is arranged, one side of the upper end of the water collecting groove is connected to the lower end of the pre-cooler and the lower end of the evaporator respectively, and the other side of the upper end of the water collecting groove is connected to the pressure relief valve.
[0014] Optionally, the first baffle and the second baffle are arranged, the first baffle and the second baffle are arranged in the water collecting groove in a staggered manner, and the baffle channel is formed in the upper space of the water collecting groove.
[0015] Optionally, the first spiral plate and the second spiral plate are arranged, the first heat exchange pipe and the second heat exchange pipe are baffle pipes, the straight pipe section of the first heat exchange pipe extends along the axial direction of the pre-cooler, the straight pipe section of the second heat exchange pipe extends along the axial direction of the evaporator, the first spiral plate is arranged in the pre-cooler in the axial direction, and the second spiral plate is arranged in the evaporator in the axial direction.
[0016] Optionally, the liquid level meter is arranged, the liquid level meter is connected to the side wall of the water collecting groove, and the lower end side of the water collecting groove is connected to the drain valve.
[0017] Optionally, the second drain pipe is arranged, one end of the second drain pipe is connected to the lower end of the central pipe, and a second drain valve is arranged on the second drain pipe.
[0018] Optionally, the other end of the first drain pipe and the other end of the second drain pipe are connected to the top wall of the water collecting groove respectively.
[0019] By means of the above technical scheme, the present application has at least the following advantages:
[0020] Compressed air flows sequentially through a precooler, evaporator, steam-water separator, and first heat exchange tube, and then through the first or second adsorption tower. During this process, the compressor of the refrigeration unit drives the refrigerant to flow back and forth through the second heat exchange tube, absorbing heat from the compressed air and cooling the moisture in the liquefied air. When the refrigerant flows through the cooling coil, it releases heat, raising the temperature of the air flowing inside the casing. The air then flows through the heater, and the heated air flows through the first or second adsorption tower that needs to be desorbed.
[0021] Through the above process, on the one hand, the heat of the refrigerant is released, and on the other hand, the air entering the heater is preheated, reducing the load on the heater. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a drying system for reducing the moisture content of compressed air, provided as an embodiment of the present invention.
[0023] The reference numerals in the accompanying drawings include: precooler 1, evaporator 2, steam-water separator 3, first heat exchange tube 4, second heat exchange tube 5, first adsorption tower 6, second adsorption tower 7, compressor 8, casing 9, fan 10, cooling coil 11, heater 12, drain valve 13, shell 301, central tube 302, annular buckle plate 303, first drain pipe 304, inverted U-shaped pipe 14, water receiving tank 15, pressure relief valve 16, first baffle plate 17, second baffle plate 18, first spiral plate 19, second spiral plate 20, level gauge 21, drain valve 22, and second drain pipe 305. Detailed Implementation
[0024] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0026] like Figure 1 As shown, an embodiment of the present invention provides a drying system for reducing the moisture content of compressed air, which includes: a main body and a refrigeration mechanism;
[0027] The main body part comprises a pre-cooler 1, an evaporator 2 and a steam-water separator 3 connected in sequence, the pre-cooler 1 is provided with first heat exchange pipes 4, the evaporator 2 is provided with second heat exchange pipes 5, the outlet of the steam-water separator 3 is connected to the inlet of the first heat exchange pipes 4, the outlet of the first heat exchange pipes 4 is connected to the inlet of a first adsorption tower 6 and the inlet of a second adsorption tower 7 respectively;
[0028] The refrigeration mechanism comprises a compressor 8, a casing 9, a fan 10 and a cooling coil 11 arranged in the casing 9 in sequence, the outlet of the cooling coil 11 is connected to the inlet of the compressor 8, the outlet of the compressor 8 is connected to the inlet of the second heat exchange pipes 5, the outlet of the second heat exchange pipes 5 is connected to the inlet of the cooling coil 11, the outlet of the casing 9 is connected to the inlet of a heater 12, the outlet of the heater 12 is connected to the outlet end of the first adsorption tower 6 and the outlet end of the second adsorption tower 7 respectively.
[0029] The working process of the drying system for reducing the water content of compressed air is as follows:
[0030] The compressed air flows through the pre-cooler 1, the evaporator 2, the steam-water separator 3 and the first heat exchange pipes 4 in sequence, and then flows through the first adsorption tower 6 or the second adsorption tower 7, and is subjected to cooling and drying and adsorption drying in sequence, in the above process, the compressor 8 of the refrigeration mechanism drives the refrigerant to flow through the second heat exchange pipes 5 reciprocally, absorbs the heat of the compressed air, and liquefies the water in the air, when the refrigerant flows through the cooling coil 11, the heat is released, the temperature of the flowing air in the casing 9 is raised, and then the air flows through the heater 12, and the heated air flows through the first adsorption tower 6 or the second adsorption tower 7 which needs to be desorbed.
[0031] Through the above process, on the one hand, the heat of the refrigerant is released, and on the other hand, the air before entering the heater 12 is preheated, thereby reducing the load of the heater 12.
[0032] Specifically, the heater 12 comprises a heat preservation shell and an electric heating wire arranged in the heat preservation shell, and the air flowing through the heat preservation shell is heated to meet the drying requirements of the desiccant in the adsorption tower.
[0033] Specifically, the extension direction of the air from the inlet of the casing 9 to the outlet of the casing 9 is a first direction, the fan 10 and the cooling coil 11 are arranged in the first direction in sequence, the outlet end of the casing 9 is a tapered interface, and the tapered interface is connected to the inlet of the heater 12, so as to facilitate the guiding of the flowing air and reduce the loss of kinetic energy of the air in the casing 9.
[0034] Specifically, the inlet end side of the first adsorption tower 6 and the inlet end side of the second adsorption tower 7 are connected to discharge pipes respectively, and the discharge pipes are provided with discharge valves 13.
[0035] In the specific embodiment, the steam-water separator 3 comprises a shell 301 and a central pipe 302 vertically arranged in the shell 301, the outer periphery of the central pipe 302 is provided with an annular baffle 303, a plurality of baffles are staggered arranged in the central pipe 302, the outlet of the evaporator 2 is connected to the lower end of the central pipe 302, and the upper end outlet of the shell 301 is connected to the inlet of the first heat exchange pipe 4.
[0036] In the specific embodiment, the air cooled and condensed by the evaporator 2 enters the central pipe 302, and is deflected upward in the central pipe 302. Due to the flow guiding effect of the annular baffle 303, the air overflowing out of the upper end of the central pipe 302 is deflected downward, and then deflected upward to the upper end outlet of the shell 301, and reaches the first heat exchange pipe 4.
[0037] Through the above process, gas-liquid separation is realized, and the air after dehumidification flows through the first heat exchange pipe 4, thereby pre-reducing the temperature of the compressed air entering the pre-cooler 1, and fully utilizing the cold energy of the air after dehumidification.
[0038] Specifically, the annular baffle 303 comprises an annular baffle plate and a dome-shaped cover plate fixedly connected to the upper end of the annular baffle plate, so that the air overflowing out of the central pipe 302 flows again in the peripheral space of the central pipe 302, thereby ensuring the sufficiency of gas-liquid separation.
[0039] In the specific embodiment, a first drain pipe 304 is further included, one end of the first drain pipe 304 is connected to the lower end of the shell 301 outside the central pipe 302, and the first drain pipe 304 is provided with a first drain valve.
[0040] In the specific embodiment, the first drain valve is an electromagnetic valve, and the first drain valve is periodically opened by a PLC controller to drain the condensed water deposited in the shell 301.
[0041] In the specific embodiment, a reverse U-shaped pipe is further included, one end of the reverse U-shaped pipe is connected to the lower end side of the pre-cooler 1, the other end of the reverse U-shaped pipe is connected to the lower end side of the evaporator 2, and the upper end outlet of the evaporator 2 is connected to the lower end of the central pipe 302.
[0042] In the specific embodiment, the pre-cooler 1 and the evaporator 2 are arranged side by side, the heights of the pre-cooler 1 and the evaporator 2 are the same, and the U-shaped bend position of the reverse U-shaped pipe is higher than the positions of the two ends of the reverse U-shaped pipe, so that the condensed water at the bottom of the pre-cooler 1 and the bottom of the evaporator 2 can be prevented from entering the reverse U-shaped pipe, and water seal is avoided, thereby enabling the air in the pre-cooler 1 to enter the evaporator 2 through the reverse U-shaped pipe.
[0043] In the specific embodiment, a water collecting groove 15 is further included, one side of the upper end of the water collecting groove 15 is connected to the lower end of the pre-cooler 1 and the lower end of the evaporator 2 respectively, and the other side of the upper end of the water collecting groove 15 is connected to a pressure relief valve 16.
[0044] In the embodiment, specifically, the water in the lower part of the pre-cooler 1 and the lower part of the evaporator 2 is settled into the water collecting tank 15. When the liquid level in the water collecting tank 15 is high, the pressure in the water collecting tank 15 is higher than the normal pressure, and the pressure relief valve 16 is automatically opened to release the high pressure gas in the water collecting tank 15, so that the condensed water in the condenser and the evaporator 2 can be smoothly settled into the water collecting tank 15.
[0045] Specifically, the pressure relief valve 16 is a spring safety valve.
[0046] In the embodiment, a plurality of first baffles 17 and a plurality of second baffles 18 are arranged in the water collecting tank 15 in a staggered manner to form a baffle channel in the upper space of the water collecting tank 15.
[0047] In the embodiment, specifically, the plurality of first baffles 17 and the plurality of second baffles 18 are arranged in the upper space of the water collecting tank 15 in a staggered manner, the upper end of the first baffle 17 is fixedly connected to the top wall of the water collecting tank 15, and a gap is formed between the upper end of the second baffle 18 and the top wall of the water collecting tank 15. Thus, after a certain amount of condensed water is stored in the water collecting tank 15, the upper space of the water collecting tank 15 forms a baffle channel, which facilitates the release of the high pressure air from the water collecting tank 15 and allows as much water vapor to be condensed and liquefied as possible.
[0048] Specifically, a gap is also formed between the lower end of the second baffle 18 and the bottom wall of the water collecting tank 15, so that the lower space of the water collecting tank 15 is an integral through space, and the liquid level in the water collecting tank 15 is consistent as a whole.
[0049] In the embodiment, a first spiral plate 19 and a second spiral plate 20 are further included, the first heat exchange pipe 4 and the second heat exchange pipe 5 are baffle pipes, the straight pipe section of the first heat exchange pipe 4 extends along the axial direction of the pre-cooler 1, the straight pipe section of the second heat exchange pipe 5 extends along the axial direction of the evaporator 2, the first spiral plate 19 is arranged in the pre-cooler 1 in the axial direction, and the second spiral plate 20 is arranged in the evaporator 2 in the axial direction.
[0050] In the embodiment, specifically, due to the presence of the first spiral plate 19 and the second spiral plate, an axial spiral channel is formed in the pre-cooler 1 and the evaporator 2, air spirally rises or spirally descends in the spiral channel, so that the air can be uniformly diffused in the radial cross section, and thus the air can sufficiently receive the cold energy transferred by the first heat exchange pipe 4 and the second heat exchange pipe 5.
[0051] In the embodiment, a liquid level meter 21 is further included, the liquid level meter 21 is connected to the side wall of the water collecting tank 15, and the lower end side of the water collecting tank 15 is connected to a water drain valve 22.
[0052] In the embodiment, the liquid level meter 21 is a float liquid level meter 21, and the operator can observe the high liquid level in the water collecting tank 15 through the liquid level meter 21, so as to facilitate opening of the drain valve 22 and draining of the condensed water in the water collecting tank 15.
[0053] In the embodiment, the second drain pipe 305 is connected to the lower end of the central pipe 302, and the second drain valve is installed in the second drain pipe 305.
[0054] In the embodiment, the second drain valve is an electromagnetic valve, and the air flows upward in the central pipe 302. In order to avoid deposition of the condensed water in the lower part of the central pipe 302, the operator can set the time period for opening of the second drain valve through the PLC controller, or install a pressure sensor on the pipe wall between the evaporator 2 and the central pipe 302, and open the second drain valve when the pressure sensor detects that the pressure exceeds the set value, so as to drain the condensed water at the bottom of the central pipe 302 and ensure smooth airflow between the evaporator 2 and the central pipe 302.
[0055] In the embodiment, the other end of the first drain pipe 304 and the other end of the second drain pipe 305 are connected to the top wall of the water collecting tank 15.
[0056] In the embodiment, the first drain pipe 304 and the second drain pipe 305 are connected to the water collecting tank 15, so as to facilitate collection of the condensed water discharged from the steam-water separator 3 and maintain the clean and dry environment of the equipment site.
[0057] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A drying system for reducing the moisture content of compressed air, characterized in that, include: The main body includes a precooler, an evaporator, and a steam-water separator connected in sequence. The precooler is provided with a first heat exchange tube, the evaporator is provided with a second heat exchange tube, the outlet of the steam-water separator is connected to the inlet of the first heat exchange tube, and the outlet of the first heat exchange tube is connected to the inlet of the first adsorption tower and the inlet of the second adsorption tower, respectively. The refrigeration mechanism includes a compressor, a housing, a fan and a cooling coil arranged sequentially within the housing. The outlet of the cooling coil is connected to the inlet of the compressor, the outlet of the compressor is connected to the inlet of the second heat exchange tube, the outlet of the second heat exchange tube is connected to the inlet of the cooling coil, the outlet of the housing is connected to the inlet of the heater, and the outlet of the heater is connected to the outlet of the first adsorption tower and the outlet of the second adsorption tower, respectively.
2. The drying system for reducing the moisture content of compressed air according to claim 1, characterized in that, The steam-water separator includes a shell and a central tube vertically disposed within the shell. An annular buckle plate is provided around the central tube, and multiple baffles are arranged alternately inside the central tube. The outlet of the evaporator is connected to the lower end of the central tube, and the upper outlet of the shell is connected to the inlet of the first heat exchange tube.
3. The drying system for reducing the moisture content of compressed air according to claim 2, characterized in that, It also includes a first drain pipe, one end of which is connected to the lower end of the housing surrounding the central pipe, and the first drain pipe is equipped with a first drain valve.
4. The drying system for reducing the moisture content of compressed air according to claim 2, characterized in that, It also includes an inverted U-shaped tube, one end of which is connected to the lower end of the precooler and the other end of which is connected to the lower end of the evaporator. The upper outlet of the evaporator is connected to the lower end of the central tube.
5. The drying system for reducing the moisture content of compressed air according to claim 3, characterized in that, It also includes a water receiving tank, one side of the upper end of which is connected to the lower end of the precooler and the lower end of the evaporator, and the other side of the upper end of the water receiving tank is connected to a pressure relief valve.
6. The drying system for reducing the moisture content of compressed air according to claim 5, characterized in that, It also includes multiple first baffles and multiple second baffles, which are arranged alternately in the water receiving tank to form a baffle channel in the upper space of the water receiving tank.
7. The drying system for reducing the moisture content of compressed air according to claim 1, characterized in that, It also includes a first spiral plate and a second spiral plate. The first heat exchange tube and the second heat exchange tube are baffles. The straight section of the first heat exchange tube extends along the axial direction of the precooler, and the straight section of the second heat exchange tube extends along the axial direction of the evaporator. The first spiral plate is axially disposed inside the precooler, and the second spiral plate is axially disposed inside the evaporator.
8. The drying system for reducing the moisture content of compressed air according to claim 5, characterized in that, It also includes a level gauge, which is connected to the side wall of the water receiving tank, and the lower end of the water receiving tank is connected to a drain valve.
9. The drying system for reducing the moisture content of compressed air according to claim 5, characterized in that, It also includes a second drain pipe, one end of which is connected to the lower end of the central pipe, and the second drain pipe is equipped with a second drain valve.
10. The drying system for reducing the moisture content of compressed air according to claim 9, characterized in that, The other end of the first drain pipe and the other end of the second drain pipe are respectively connected to the top wall of the water receiving tank.