Double-column air dryer

Abstract

The application relates to a double-tower air dryer which comprises a first drying tower, a second drying tower, a three-way connecting body, a gas dry road and a detection piece; the three-way connecting body comprises a first connecting pipe and a second connecting pipe; the first connecting pipe is fixedly connected with the first drying tower and the second drying tower respectively; the second connecting pipe comprises a body and a connecting part; one end of the body is detachably fixedly connected with the middle part of the first connecting pipe, the other end is detachably connected with the gas dry road, the body is provided with a stepped thread hole, the diameters of the hole sections of the stepped thread hole gradually decrease from inside to outside, the connecting part is provided with a stepped connecting section, the stepped connecting section is matched with the stepped thread hole and is in threaded connection, the connecting part is provided with an inner hole, and the detection piece is glued and fixed in the inner hole. The application is convenient for replacement and maintenance of the detection piece, and the replacement process does not damage the sealing state of the installation position of the detection piece.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, and in particular to a dual-tower air dryer. Background Technology

[0002] Dual-tower air dryers are used in the air supply systems of various rail vehicles to dry and purify the air in the rail vehicles. In order to monitor the status of dual-tower air dryers, pressure sensors and other detection devices are installed on the inlet and outlet air pipes of some dual-tower air dryers.

[0003] During prolonged use, the testing components inevitably suffer damage and failure. Replacing or maintaining the testing components can easily disrupt the sealing of the installation location, which can negatively impact the subsequent use of the dual-tower air dryer. Utility Model Content

[0004] Therefore, it is necessary to provide a dual-tower air dryer to address the problem that replacing or maintaining the testing components can easily damage the sealing of the installation location, thus adversely affecting the subsequent use of the dual-tower air dryer.

[0005] This application provides a dual-tower air dryer, including a first drying tower, a second drying tower, a three-way connector, a gas main, and a detection element; the three-way connector includes a first connecting pipe and a second connecting pipe; the first connecting pipe is fixedly connected to the first drying tower and the second drying tower respectively; the second connecting pipe includes a body and a connecting part, one end of the body is detachably fixedly connected to the middle part of the first connecting pipe, and the other end is detachably connected to the gas main; the body is provided with a stepped threaded hole, the diameter of each segment of the stepped threaded hole decreasing sequentially from the inside to the outside; the connecting part is provided with a stepped connecting section, the stepped connecting section is adapted to the stepped threaded hole and threadedly connected; the connecting part is provided with an inner hole, and the detection element is fixed in the inner hole by injection.

[0006] According to one embodiment of this application, the stepped threaded hole of the body has a first stepped surface, the stepped connecting section of the connecting part has a second stepped surface opposite to the first stepped surface, and a first sealing ring is provided between the first stepped surface and the second stepped surface.

[0007] According to one embodiment of this application, the first stepped surface and the second stepped surface are respectively provided with positioning grooves, one side of the first sealing ring is embedded in the positioning groove of the first stepped surface, and the other side is embedded in the positioning groove of the second stepped surface.

[0008] According to one embodiment of this application, a plug hole is provided in the middle of the first connecting pipe, a first plug portion is formed at one end of the body, the first plug portion is located in the plug hole, and a first flange is fixed on the outside of the body, the first flange is bolted to the first connecting pipe.

[0009] According to one embodiment of this application, a second insertion portion is formed at the other end of the body, the second insertion portion is located inside the gas trunk line, a second flange is fixedly provided on the outer side of the body, a third flange is fixedly provided on the outer side of the gas trunk line, and the second flange is bolted to the third flange.

[0010] According to one embodiment of this application, a second sealing ring is provided on the outer side of the first insertion portion and / or the second insertion portion.

[0011] According to one embodiment of this application, it further includes an electronic controller, which includes a controller and a display, the controller being signal-connected to the detection element and the display, respectively.

[0012] According to one embodiment of this application, the three-way connector includes an inlet connector and an outlet connector, both of which are connected to the first drying tower and the second drying tower. The gas trunk line includes an inlet trunk line and an outlet trunk line, the inlet trunk line being connected to the inlet connector and the outlet trunk line being connected to the outlet connector. The detection element includes an inlet pressure sensor, an outlet pressure sensor, and a humidity sensor, the inlet pressure sensor being located in the inlet connector, and the outlet pressure sensor and the humidity sensor being located in the outlet connector.

[0013] According to one embodiment of this application, it further includes an inlet valve, an outlet check valve, and an exhaust valve. The inlet valve is disposed on the inlet connector, the outlet check valve is disposed on the outlet connector, and the exhaust valve connects the first drying tower and the second drying tower.

[0014] According to one embodiment of this application, the controller is signal-connected to the intake valve and the exhaust valve.

[0015] The aforementioned dual-tower air dryer, through a detection component, enables the detection of parameters such as pressure and humidity. The detection component is fixed in the inner hole of the connecting part with adhesive and then secured to the main body via the connecting part. The main body is detachably connected to the first connecting pipe and the gas main line. When the detection component needs replacement or maintenance, the main body, the first connecting pipe, and the gas main line can be disassembled, and the connecting part and detection component can be removed and replaced with new ones. The connecting part and the main body are connected by a stepped connecting section and a stepped threaded hole, ensuring a tight seal between them. Replacing the detection component does not compromise this seal. The detection component is fixed in the inner hole of the connecting part with adhesive, and replacing the entire detection component and connecting part ensures a tight seal. This effectively solves the problem of easily damaging the seal at the installation location of the detection component during replacement or maintenance, thus improving the accuracy of the detection. Attached Figure Description

[0016] Figure 1 This is a front view of a dual-tower air dryer according to an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the installation structure of the second connecting pipe in a dual-tower air dryer according to an embodiment of this application.

[0018] Figure 3 for Figure 1 Enlarged view of a partial cross-section at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the overall structure of the second connecting pipe in a dual-tower air dryer according to an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of a dual-tower air dryer according to an embodiment of this application.

[0021] Figure label:

[0022] 100. First drying tower;

[0023] 200. Second drying tower;

[0024] 300. Tee connector; 310. First connecting pipe; 320. Second connecting pipe; 321. Body; 3211. Stepped threaded hole; 3212. First insertion part; 3213. First flange; 3214. Second insertion part; 3215. Second flange; 322. Connecting part; 3221. Stepped connecting section; 3222. Inner hole; 323. First sealing ring; 324. Second sealing ring; 330. Air inlet connector; 340. Air outlet connector;

[0025] 400, Gas main line; 410, Third flange; 420, Inlet main line; 430, Outlet main line;

[0026] 500. Detection component; 510. Inlet pressure sensor; 520. Outlet pressure sensor; 530. Humidity sensor;

[0027] 600. Electronic controller;

[0028] 700. Intake valve;

[0029] 800. Exhaust check valve;

[0030] 900. Exhaust valve. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] See Figures 1 to 3 , Figure 1 This is a front view of a dual-tower air dryer according to an embodiment of this application. Figure 1 The gas trunk line is hidden in the middle, 400; Figure 2 This is a schematic diagram of the installation structure of the second connecting pipe 320 in a dual-tower air dryer according to an embodiment of this application; Figure 3 for Figure 1 Enlarged view of a partial cross-section at point A in the middle.

[0038] An embodiment of this application provides a dual-tower air dryer comprising a first drying tower 100, a second drying tower 200, a three-way connector 300, a gas main 400, and a detection element 500; the three-way connector 300 includes a first connecting pipe 310 and a second connecting pipe 320; the first connecting pipe 310 is fixedly connected to the first drying tower 100 and the second drying tower 200 respectively; the second connecting pipe 320 includes a body 321 and a connecting part 322, one end of the body 321 being connected to the first connecting pipe 320. The middle part of the connector 310 is detachably fixed, and the other end is detachably connected to the gas trunk 400. The body 321 is provided with a stepped threaded hole 3211. The diameter of each section of the stepped threaded hole 3211 decreases from the inside to the outside. The connecting part 322 is provided with a stepped connecting section 3221. The stepped connecting section 3221 is adapted to the stepped threaded hole 3211 and is threaded. The connecting part 322 is provided with an inner hole 3222. The test piece 500 is fixed in the inner hole 3222 by injection.

[0039] The dual-tower air dryer includes two drying towers for air drying: a first drying tower 100 and a second drying tower 200; a three-way connector 300 for gas diversion and merging; a gas main duct 400 for conveying the gas to be dried and the dried gas; and a detection element 500 for detecting relevant parameters during the dryer's operation. The three-way connector 300 connects the drying tower and the gas main duct 400, handling the gas transmission between them. The detection element 500 acquires key parameters during the dryer's operation, providing a basis for determining the dryer's operating status.

[0040] The specific structure and connection method of the three-way connector 300: The three-way connector 300 consists of two parts: a first connecting pipe 310 and a second connecting pipe 320. The two ends of the first connecting pipe 310 are fixedly connected to the first drying tower 100 and the second drying tower 200, respectively. Through this fixed connection, the first connecting pipe 310 can stably deliver gas to the first drying tower 100 and the second drying tower 200, and simultaneously collect the gas dried by the first drying tower 100 and the second drying tower 200 and transmit it to subsequent components, ensuring stable gas flow between the drying towers and the three-way connector 300.

[0041] The second connecting pipe 320 includes a body 321 and a connecting part 322. One end of the body 321 is detachably and fixedly connected to the middle of the first connecting pipe 310, allowing the body 321 to be removed from the first connecting pipe 310 when needed, and the two can be re-fixed during installation to ensure the stability and gas sealing after connection. The other end of the body 321 is detachably and fixedly connected to the gas main 400. This detachable connection facilitates subsequent maintenance or replacement of the body 321 and related components, and ensures stable gas transmission between the body 321 and the gas main 400 when connected, preventing gas leakage.

[0042] A stepped threaded hole 3211 is provided on the body 321. The stepped threaded hole 3211 extends axially along the body 321, and the diameter of each hole segment decreases from the inside to the outside. Here, "inside" refers to the side closer to the internal gas passage of the first connecting pipe 310, and "outside" refers to the side farther away from the internal gas passage of the first connecting pipe 310. By gradually decreasing the diameter of each hole segment from the inside to the outside, the stepped threaded hole 3211 forms a hole structure with multiple steps of different diameters, and the hole wall is provided with threads to provide a mating structure for connection with the connecting part 322.

[0043] The connecting part 322 is provided with a stepped connecting section 3221. The shape and size of the stepped connecting section 3221 are adapted to the stepped threaded hole 3211 on the body 321. That is, the diameter of each step of the stepped connecting section 3221 can correspond one-to-one with the diameter of each hole segment of the stepped threaded hole 3211. At the same time, the outer surface of the stepped connecting section 3221 is also provided with threads. Through the mutual engagement of the threads with the threads of the stepped threaded hole 3211, the threaded connection between the connecting part 322 and the body 321 is realized. This adapted stepped structure combined with the threaded connection can ensure the tightness and stability of the connection between the connecting part 322 and the body 321, and at the same time facilitate the disassembly and installation of both.

[0044] An inner hole 3222 is also provided on the connecting part 322, which extends through the connecting part 322 axially. The detection element 500 is installed in the inner hole 3222 and fixed in the inner hole 3222 by adhesive injection. Adhesive injection fills the gap between the detection element 500 and the wall of the inner hole 3222. After the adhesive cures, it not only firmly fixes the detection element 500 in the inner hole 3222, preventing the detection element 500 from loosening or shifting during the operation of the dryer, but also forms an effective sealing structure to prevent gas leakage from the gap between the detection element 500 and the wall of the inner hole 3222. The detection end of the detection element 500 is exposed outside the adhesive injection area to achieve data acquisition within the body 321.

[0045] In this embodiment, the detection component 500 can detect key parameters during the operation of the dual-tower air dryer, such as gas pressure and humidity. These parameters can directly reflect the working status of the dryer, providing accurate basis for staff to judge whether the dryer is operating normally. This meets the basic requirements for monitoring the status of air dryers in the air supply system of rail vehicles and avoids the risk of air supply system failure due to the inability to grasp the working status of the dryer.

[0046] Because the main body 321 is detachably fixedly connected to the first connecting pipe 310 and the gas main 400, and the connecting part 322 is detachably connected to the main body 321 via a threaded connection, when the detection component 500 is damaged or malfunctions and requires maintenance or replacement, the operator does not need to extensively disassemble the overall structure of the dual-tower air dryer. They only need to first disconnect the main body 321 from the first connecting pipe 310 and the gas main 400, then remove the detection component 500 from the main body 321 by rotating the connecting part 322. Then, replace the connecting part 322 with the new detection component 500, and reassemble in the reverse order to complete the maintenance and replacement of the detection component 500. The entire process is simple, requires no specialized or complex tools, effectively reduces the difficulty and workload of maintenance operations, saves maintenance time, and improves maintenance efficiency.

[0047] The stepped threaded hole 3211 of the body 321 is adapted to the stepped connecting section 3221 of the connecting part 322 and is connected by threads. The stepped structure can increase the contact area of ​​the connection between the two. Compared with the ordinary straight hole and straight rod connection, the stepped structure can form a sealed contact at multiple step positions. Combined with the sealing effect of the threaded connection itself, it can effectively prevent gas from leaking from the connection position between the body 321 and the connecting part 322. On the other hand, the detection element 500 is fixed in the inner hole 3222 by injection of glue. The sealing layer formed after the glue cures can completely fill the gap between the detection element 500 and the wall of the inner hole 3222, completely eliminating the possibility of gas leakage from the installation position of the detection element 500.

[0048] The double-sealing structure design effectively solves the problem in existing technologies where the sealing at the installation location is easily damaged during the replacement and maintenance of the testing component 500. Even after multiple maintenance and replacements of the testing component 500, the good sealing performance of the installation location of the testing component 500 and the connection locations of related components can still be guaranteed. This avoids problems such as decreased dryer efficiency and inaccurate test data caused by seal failure, ensuring the stability and reliability of the dryer during long-term operation, extending the overall service life of the dryer, and reducing the probability of air supply system failures caused by sealing problems, thus ensuring the safe operation of the rail vehicle's air supply system. Furthermore, both the body 321 and the connecting part 322 can be made of metal, effectively improving stability and preventing a decrease in sealing effect due to damage to the threads or other structures even after multiple replacements.

[0049] Optionally, to further facilitate the replacement and maintenance of the test piece 500, the connecting part 322 may be located near the end of the body 321.

[0050] In some embodiments, the stepped threaded hole 3211 of the body 321 has a first stepped surface, the stepped connecting section 3221 of the connecting part 322 has a second stepped surface opposite to the first stepped surface, and a first sealing ring 323 is provided between the first stepped surface and the second stepped surface.

[0051] Inside the stepped threaded hole 3211 of the main body 321, a first stepped surface is formed at the transition position of each segment of the stepped threaded hole 3211. This first stepped surface is an annular end face. A second stepped surface is formed on the stepped connecting segment 3221 in the area opposite to the first stepped surface. This second stepped surface is also an annular end face, but its orientation is opposite to that of the first stepped surface. This allows the first and second stepped surfaces to come into close contact with each other when the connecting part 322 completes the threaded connection with the stepped threaded hole 3211 of the main body 321 through the stepped connecting segment 3221. A first sealing ring 323 is provided between the first and second stepped surfaces. This first sealing ring 323 has an annular structure and is sandwiched between the first and second stepped surfaces, with both sides of the sealing ring contacting the first and second stepped surfaces, respectively.

[0052] By setting a first sealing ring 323 between the first and second stepped surfaces, an additional sealing structure can be formed at the stepped mating position of the connecting part 322 and the body 321, further enhancing the sealing performance between them and effectively preventing gas leakage from the mating gap between the connecting part 322 and the body 321. This sealing structure can improve the overall sealing performance of the dual-tower air dryer, ensure the accuracy of the gas parameters collected by the detection element 500, avoid the decrease in drying efficiency of the dryer due to gas leakage, and ensure the long-term stable operation of the dryer.

[0053] In some embodiments, the first stepped surface and the second stepped surface are respectively provided with positioning grooves, one side of the first sealing ring 323 is embedded in the positioning groove of the first stepped surface, and the other side is embedded in the positioning groove of the second stepped surface.

[0054] On the surface of the first stepped surface, a positioning groove is formed along the annular contour direction of the first stepped surface. This positioning groove is an annular groove, and its depth and width are adapted to the size of the first sealing ring 323. Simultaneously, on the surface of the second stepped surface, a positioning groove is also formed along the annular contour direction of the second stepped surface. This positioning groove is also an annular groove, and its position corresponds exactly to the positioning groove on the first stepped surface, and its size is also adapted to the size of the first sealing ring 323. One side of the first sealing ring 323 is embedded in the positioning groove of the first stepped surface, so that part of the sealing ring structure is located in this positioning groove. The other side is embedded in the positioning groove of the second stepped surface, and similarly, part of the structure is located in this positioning groove. The two positioning grooves together limit the positioning of the first sealing ring 323.

[0055] By setting positioning grooves on the first and second stepped surfaces respectively, and embedding the first sealing ring 323 into the two positioning grooves, the first sealing ring 323 can be stably positioned and fixed. This prevents the first sealing ring 323 from shifting, deviating, or falling off during the assembly and disassembly of the connecting part 322 and the body 321, or when the dryer is subjected to vibration during long-term operation, ensuring that the first sealing ring 323 is always in the correct sealing position and maintaining a stable sealing effect. At the same time, the positioning grooves can prevent the first sealing ring 323 from being excessively deformed due to pressure, extending the service life of the sealing ring and further ensuring the long-term reliable sealing performance between the connecting part 322 and the body 321.

[0056] In some embodiments, a plug hole is provided in the middle of the first connecting pipe 310, a first plug part 3212 is formed at one end of the body 321, the first plug part 3212 is located in the plug hole, and a first flange 3213 is fixed on the outside of the body 321, and the first flange 3213 is bolted to the first connecting pipe 310.

[0057] A insertion hole is provided at the middle of the first connecting pipe 310, along the radial direction of the first connecting pipe 310. This insertion hole connects to the inner hole 3222 of the first connecting pipe 310, and its diameter is adapted to the size of one end of the second connecting pipe 320. One end of the body 321 is integrally formed into a first insertion part 3212. The first insertion part 3212 is a tubular structure at the end of the second connecting pipe 320, and its outer diameter matches the diameter of the insertion hole, so that the first insertion part 3212 can be completely inserted into the insertion hole, and after insertion, the outer wall of the first insertion part 3212 fits tightly against the wall of the insertion hole. On the outer surface of the body 321, a first flange 3213 is installed by welding or other means. The first flange 3213 has an annular structure, and its central hole is fixedly connected to the outer wall of the body 321. The first flange 3213 is fixed to the first connecting pipe 310 by bolts. The bolts are distributed circumferentially along the first flange 3213. By tightening the bolts, the first flange 3213 is firmly connected to the body 321, thereby stably limiting the first insertion part 3212 of the second connecting pipe 320 in the insertion hole.

[0058] By engaging the insertion hole in the middle of the first connecting pipe 310 with the first insertion part 3212 of the body 321, and combining this with the bolt fixing of the first flange 3213 to the first connecting pipe 310, a stable and detachable connection can be achieved between the body 321 and the first connecting pipe 310. This connection method ensures the connection strength between the two, resists vibration and impact during dryer operation, and prevents loosening of the connection. Simultaneously, when maintenance or replacement of the connecting part 322 and the detection component 500 is required, quick disassembly can be achieved by removing the bolts and pulling out the first insertion part 3212, reducing maintenance difficulty and saving maintenance time. Furthermore, the tight fit between the first insertion part 3212 and the insertion hole provides a preliminary seal, reducing the risk of gas leakage and ensuring stable gas transmission between the two.

[0059] In some embodiments, the other end of the body 321 forms a second plug-in portion 3214, which is located inside the gas trunk 400. A second flange 3215 is fixedly provided on the outside of the second connecting pipe 320, and a third flange 410 is fixedly provided on the outside of the gas trunk 400. The second flange 3215 and the third flange 410 are bolted together.

[0060] A second insertion portion 3214 is formed at the end of the main body 321 away from the first insertion portion 3212. This second insertion portion 3214 is a tubular structure at that end of the main body 321, with its outer diameter matching the inner diameter of the gas main 400. This allows the second insertion portion 3214 to be inserted into the inner side of the gas main 400, and after insertion, its outer wall fits tightly against the inner wall of the gas main 400. A second flange 3215 is fixedly mounted on the outer surface of the main body 321, near the second insertion portion 3214. This second flange 3215 has an annular structure, and its central hole is fixedly connected to the outer wall of the main body 321. On the outer surface of the gas trunk 400, a third flange 410 is fixedly installed in the area corresponding to the position of the second flange 3215. This third flange 410 also has a ring-shaped structure, with its central hole fixedly connected to the outer wall of the gas trunk 400. The bolt holes on the third flange 410 correspond one-to-one with the bolt holes on the second flange 3215. By passing bolts through the bolt holes of both flanges and tightening them, the second flange 3215 and the third flange 410 are securely connected, thereby stably limiting the second insertion portion 3214 of the body 321 inside the gas trunk 400.

[0061] Through the insertion and engagement of the second plug-in part 3214 with the gas main line 400, and the bolt connection between the second flange 3215 and the third flange 410, a stable and detachable connection can be achieved between the body 321 and the gas main line 400. This connection method ensures the stability of the connection between the two and avoids loosening of the connection due to vibration during dryer operation. At the same time, the detachable structure facilitates quick disassembly of the body 321 during subsequent maintenance, allowing for the replacement of the connecting part 322 and the detection element 500 on the body 321, thus improving maintenance efficiency. In addition, the tight fit between the second plug-in part 3214 and the inner wall of the gas main line 400, combined with the compression effect of the flange connection, effectively enhances the sealing between the two, prevents gas leakage, and ensures stable gas transmission along the gas main line 400 and the body 321.

[0062] In some embodiments, a second sealing ring 324 is provided on the outer side of the first plug portion 3212 and / or the second plug portion 3214.

[0063] A second sealing ring 324 is provided on the outer surface of the first insertion portion 3212 along the circumferential direction of the first insertion portion 3212. The second sealing ring 324 has an annular structure, and its inner diameter is adapted to the outer diameter of the first insertion portion 3212, so that it can be tightly fitted on the outer side of the first insertion portion 3212 and fully contact the outer wall of the first insertion portion 3212. Alternatively, a second sealing ring 324 is provided on the outer surface of the second insertion portion 3214 along the circumferential direction of the second insertion portion 3214. The second sealing ring 324 also has an annular structure, and its inner diameter is adapted to the outer diameter of the second insertion portion 3214, so that it can be tightly fitted on the outer side of the second insertion portion 3214 and fully contact the outer wall of the second insertion portion 3214. Alternatively, second sealing rings 324 are provided on the outer surfaces of the first insertion portion 3212 and the second insertion portion 3214 respectively, and the two second sealing rings 324 are in close contact with the outer walls of the corresponding insertion portions.

[0064] By providing a second sealing ring 324 on the outside of the first insertion portion 3212 and / or the second insertion portion 3214, a specialized sealing structure can be formed at the mating position between the insertion portion and the insertion hole of the first connecting pipe 310 or the gas main 400. The second sealing ring 324 can fill the tiny gaps between the insertion portion and the mating parts, effectively preventing gas leakage from these gaps, and further improving the sealing performance between the body 321 and the first connecting pipe 310, and between the body 321 and the gas main 400. Whether the sealing ring is provided in only one insertion portion or both insertion portions, the sealing performance of the corresponding connection position can be specifically enhanced, avoiding inaccurate detection parameters or reduced drying efficiency due to gas leakage, and ensuring the stable and reliable operation of the dryer.

[0065] Combination Figure 1 and Figure 5 In some embodiments, the dual-tower air dryer also includes an electronic controller 600, which includes a controller and a display, the controller being signal-connected to the detection element 500 and the display, respectively.

[0066] The dual-tower air dryer is also equipped with an electronic controller 600, which includes a controller and a display. The controller is a component with signal processing and command transmission functions, while the display is a component with information display functions. A signal connection is established between the controller and the detection element 500. After collecting gas parameters (such as pressure and humidity) during the operation of the dual-tower air dryer, the detection element 500 transmits these parameters to the controller in signal form. Upon receiving the signals from the detection element 500, the controller processes and analyzes the signals, and then transmits the processed results to the display in signal form. Upon receiving the signals from the controller, the display visually presents the dryer's operating status, the collected parameters, and other information.

[0067] By setting up an electronic controller 600 that includes a controller and a display, with the controller connected to the detection element 500 and the display signal respectively, the automatic acquisition, processing, and display of dryer operating parameters can be achieved. Operators no longer need to perform manual inspections; they can intuitively understand the dryer's operating status and key parameters simply by viewing the display, facilitating timely judgment of whether the dryer is operating normally and reducing the workload and difficulty of manual inspection. Simultaneously, the controller's processing of the detection signals can quickly identify parameter anomalies, providing a foundation for subsequent fault diagnosis and intelligent control, enhancing the dryer's intelligence level, and ensuring the safe operation of the air supply system.

[0068] In some embodiments, the three-way connector 300 includes an inlet connector 330 and an outlet connector 340, both of which are connected to the first drying tower 100 and the second drying tower 200. The gas trunk line 400 includes an inlet trunk line 420 and an outlet trunk line 430, with the inlet trunk line 420 connected to the inlet connector 330 and the outlet trunk line 430 connected to the outlet connector 340. The detection element 500 includes an inlet pressure sensor 510, an outlet pressure sensor 520, and a humidity sensor 530, with the inlet pressure sensor 510 located in the inlet connector 330 and the outlet pressure sensor 520 and humidity sensor 530 located in the outlet connector 340.

[0069] The three-way connector 300 includes two independent connector structures: an inlet connector 330 and an outlet connector 340. The inlet connector 330 is connected at both ends to the first drying tower 100 and the second drying tower 200, respectively, allowing the gas to be dried to be transported to both towers. The outlet connector 340 is also connected at both ends to the first drying tower 100 and the second drying tower 200, respectively, allowing the gas dried by the two towers to be collected. The gas trunk line 400 includes two independent pipeline structures: an inlet trunk line 420 and an outlet trunk line 430. One end of the inlet trunk line 420 is connected to the inlet connector 330, allowing external gas to be dried to be transported to the inlet connector 330 and then distributed to the two drying towers. One end of the outlet trunk line 430 is connected to the outlet connector 340, allowing the dried gas collected by the outlet connector 340 to be transported to the external air supply component. The detection component 500 includes three types of detection components: an inlet pressure sensor 510, an outlet pressure sensor 520, and a humidity sensor 530. The inlet pressure sensor 510 is installed on the inlet connector 330 and is used to collect the pressure parameters of the gas inside the inlet connector 330. The outlet pressure sensor 520 is installed on the outlet connector 340 and is used to collect the pressure parameters of the gas inside the outlet connector 340. The humidity sensor 530 is installed on the outlet connector 340 and is used to collect the humidity parameters of the gas inside the outlet connector 340.

[0070] By dividing the three-way connector 300 into an inlet connector 330 and an outlet connector 340, and the gas main 400 into an inlet main 420 and an outlet main 430, the gas to be dried and the already dried gas can be transported separately. By placing the inlet pressure sensor 510 in the inlet connector 330, the outlet pressure sensor 520, and the humidity sensor 530 in the outlet connector 340, key parameters during the inlet and outlet stages can be collected separately. This allows for a comprehensive understanding of the gas's state changes before and after drying, thereby accurately determining the dryer's drying efficiency and operating status, and providing comprehensive and accurate data support for status monitoring and troubleshooting.

[0071] In some embodiments, the dual-tower air dryer further includes an inlet valve 700, an outlet check valve 800, and an exhaust valve 900. The inlet valve 700 is disposed in the inlet connector 330, the outlet check valve 800 is disposed in the outlet connector 340, and the exhaust valve 900 is connected to the first drying tower 100 and the second drying tower 200.

[0072] The dual-tower air dryer is also equipped with an inlet valve 700, an outlet check valve 800, and an exhaust valve 900. The inlet valve 700 is installed on the inlet connector 330 and located near the connection point between the inlet connector 330 and the inlet main line 420, controlling the flow of gas from the inlet main line 420 to the inlet connector 330. The outlet check valve 800 is installed on the outlet connector 340 and located near the connection point between the outlet connector 340 and the outlet main line 430, allowing only the dry gas in the outlet connector 340 to flow towards the outlet main line 430, preventing gas from flowing back from the outlet main line 430 into the outlet connector 340. The exhaust valve 900 is connected at both ends to the first drying tower 100 and the second drying tower 200, respectively, allowing the discharge of moisture or impurity gases generated during the regeneration process of the first drying tower 100 and the second drying tower 200 to the outside.

[0073] By setting up an inlet valve 700, an outlet check valve 800, and an exhaust valve 900, the gas flow within the dryer can be effectively controlled. The inlet valve 700 can control the gas to be dried to enter the inlet connector 330 according to the dryer's operating requirements, thus controlling the start and stop of the drying process. The outlet check valve 800 prevents dried gas from flowing back into the drying tower, avoiding mixing of dried and undried gas, ensuring the drying quality of the output gas, and preventing the adsorbent in the drying tower from becoming damp, maintaining the adsorption effect. The exhaust valve 900 can promptly discharge moisture and impurities during the regeneration process of the drying tower, ensuring regeneration efficiency, extending the adsorbent's service life, and guaranteeing the long-term stable drying performance of the dryer.

[0074] In some embodiments, the controller is signal-connected to the intake valve 700 and the exhaust valve 900.

[0075] The controller is connected to the intake valve 700 via a signal connection, and also to the exhaust valve 900 via a signal connection. These signal connections can be wired or wireless; no specific limitation is made here. The intake valve 700 and exhaust valve 900 can be solenoid valves or gas pilot valves; no specific limitation is made here. After receiving and processing the parameter signals transmitted by the detection element 500, if the controller determines that the intake volume needs adjustment or intake on / off control needs to be performed, it will send a corresponding control signal to the intake valve 700. Upon receiving the control signal, the intake valve 700 adjusts its own on / off state or opening degree according to the signal instruction, thereby controlling the amount of gas entering the intake connection body 330. If the controller determines that the drying tower needs regeneration exhaust or to discharge abnormal gas, it will send a control signal to the exhaust valve 900. Upon receiving the control signal, the exhaust valve 900 adjusts its own on / off state according to the signal instruction, realizing the opening or closing of the exhaust.

[0076] By connecting the controller to the inlet valve 700 and the exhaust valve 900, intelligent control of the dryer's air intake and exhaust processes can be achieved. The controller can automatically adjust the operating states of the inlet valve 700 and the exhaust valve 900 based on real-time parameters collected by the sensor 500, eliminating the need for manual operation, reducing workload, and improving the timeliness and accuracy of control. For example, the controller converts the electrical signals for inlet and outlet pressures and compares them with a threshold value set in the control module. If the difference remains greater than zero within a specified time, it is considered abnormal, and the inlet valve 700 and the exhaust valve 900 are closed; otherwise, it is considered normal. When the inlet pressure is detected to be too high, the controller can appropriately close the inlet valve 700 to reduce the intake volume. When the outlet humidity is detected to be greater than the threshold, and the drying tower needs regeneration, the controller can open the exhaust valve 900 to discharge moisture, ensuring effective regeneration. This intelligent control method enables the dryer to automatically adjust its operating parameters according to the actual working conditions, ensuring the dryer is in optimal working condition, improving the level of intelligence and operational stability, and avoiding errors or safety risks associated with manual operation.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dual-tower air dryer, characterized in that, The device includes a first drying tower, a second drying tower, a three-way connector, a gas main line, and a testing component. The three-way connector includes a first connecting pipe and a second connecting pipe. The first connecting pipe is fixedly connected to the first drying tower and the second drying tower, respectively. The second connecting pipe includes a body and a connecting part. One end of the body is detachably fixedly connected to the middle part of the first connecting pipe, and the other end is detachably connected to the gas main line. The body is provided with a stepped threaded hole, and the diameter of each segment of the stepped threaded hole decreases sequentially from the inside to the outside. The connecting part is provided with a stepped connecting section, which is adapted to the stepped threaded hole and threadedly connected. The connecting part is provided with an inner hole, and the testing component is fixed in the inner hole by injection.

2. The dual-tower air dryer according to claim 1, characterized in that, The stepped threaded hole of the body has a first stepped surface, and the stepped connecting section of the connecting part has a second stepped surface opposite to the first stepped surface. A first sealing ring is provided between the first stepped surface and the second stepped surface.

3. The dual-tower air dryer according to claim 2, characterized in that, The first stepped surface and the second stepped surface are respectively provided with positioning grooves. One side of the first sealing ring is embedded in the positioning groove of the first stepped surface, and the other side is embedded in the positioning groove of the second stepped surface.

4. The dual-tower air dryer according to any one of claims 1 to 3, characterized in that, The first connecting pipe has a insertion hole in the middle, and one end of the body forms a first insertion part, which is located in the insertion hole. A first flange is fixed on the outside of the body and is bolted to the first connecting pipe.

5. The dual-tower air dryer according to claim 4, characterized in that, The other end of the main body forms a second insertion part, which is located inside the gas trunk line. A second flange is fixed on the outside of the main body, and a third flange is fixed on the outside of the gas trunk line. The second flange is bolted to the third flange.

6. The dual-tower air dryer according to claim 5, characterized in that, A second sealing ring is provided on the outer side of the first insertion part and / or the second insertion part.

7. The dual-tower air dryer according to any one of claims 1 to 3, characterized in that, It also includes an electronic controller, which includes a controller and a display, the controller being signal-connected to the detection device and the display, respectively.

8. The dual-tower air dryer according to claim 7, characterized in that, The three-way connector includes an inlet connector and an outlet connector, both of which are connected to the first drying tower and the second drying tower. The gas main path includes an inlet main path and an outlet main path, with the inlet main path connected to the inlet connector and the outlet main path connected to the outlet connector. The detection element includes an inlet pressure sensor, an outlet pressure sensor, and a humidity sensor, with the inlet pressure sensor located on the inlet connector and the outlet pressure sensor and humidity sensor located on the outlet connector.

9. The dual-tower air dryer according to claim 8, characterized in that, It also includes an inlet valve, an outlet check valve, and an exhaust valve. The inlet valve is located in the inlet connector, the outlet check valve is located in the outlet connector, and the exhaust valve connects the first drying tower and the second drying tower.

10. The dual-tower air dryer according to claim 9, characterized in that, The controller is signal-connected to the intake valve and the exhaust valve.

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