Variable pressure adsorption oxygen production air cooler

Abstract

This utility model relates to the field of air cooler technology, specifically providing a pressure swing adsorption (PSA) oxygen-generating air cooler, including a front cover, a rear cover, and a core assembly. The front cover is fixedly installed at the front end of the core assembly, and the rear cover is fixedly installed at the rear end of the core assembly. Multiple parallel heat exchange tubes are arranged inside the core assembly. Side plates supporting the heat exchange tubes are provided at both ends of the inner side of the core assembly. An air inlet pipe is connected to the left end of the core assembly, and an air outlet pipe is connected to the right end. Two reinforcing plates are provided inside the core assembly, with their upper and lower ends fixedly welded to the upper and lower walls of the core assembly, respectively. Reinforcing rods are fixedly installed on both sides of the reinforcing plates. Each heat exchange tube passes through a through hole in the reinforcing plate, and an annular rubber bushing is provided between the heat exchange tube and the inner wall of the through hole. This utility model reduces airflow impact force through the design of the large and small end pipes, effectively reducing equipment vibration. Simultaneously, the annular rubber bushing provides a buffering effect, reducing equipment vibration, component damage, and increasing the service life of the air cooler.

Description

Technical Field

[0001] This utility model relates to the field of air cooler technology, specifically to a pressure swing adsorption oxygen generator air cooler. Background Technology

[0002] In pressure swing adsorption (PSA) gas separation technology, the cooler is a crucial component of the system, its function being to cool the pressurized air discharged from the Roots blower. Specifically, after passing through the blower, the air pressure and temperature increase; cooling by the air cooler lowers the air temperature before it enters the adsorber. The adsorber is filled with adsorbent, in which moisture, carbon dioxide, and trace amounts of other gaseous components are adsorbed by the activated alumina at the bottom of the adsorber inlet, while nitrogen is adsorbed by the zeolite molecular sieve above the activated alumina. Oxygen (including argon), as a non-adsorbed component, is discharged from the top outlet of the adsorber to an oxygen buffer tank, thus obtaining the desired oxygen.

[0003] Existing air coolers typically consist of front and rear end covers, core assemblies, gaskets, etc. The medium inside the pipes is circulating water, and the medium outside the pipes is low-pressure raw material air (pressure -20 to 65 kPa) delivered by a blower. Due to frequent pressure changes during equipment operation (approximately 140 times / hour), cyclic stress is generated. If the structural design is inappropriate, it may lead to equipment vibration, component damage, or decreased reliability, affecting the service life of the air cooler and the normal operation of the oxygen generation system.

[0004] Therefore, it is necessary to provide a pressure swing adsorption (PSA) oxygen generator with air cooler to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is that cyclic stress is generated in the existing technology. If the structural design is not proper, it may lead to equipment vibration, component damage or reduced reliability, affecting the service life of the air cooler and the normal operation of the oxygen generation system.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: it includes a front cover, a rear cover, and a core assembly. The front cover is fixedly installed at the front end of the core assembly, and the rear cover is fixedly installed at the rear end of the core assembly. Multiple parallel heat exchange tubes are arranged inside the core assembly. Side plates supporting the heat exchange tubes are provided at both ends of the inner side of the core assembly. An air inlet pipe is connected to the left end of the core assembly, and an air outlet pipe is connected to the right end of the core assembly. Two reinforcing plates are provided inside the core assembly. The upper and lower ends of the reinforcing plates are fixedly welded to the upper and lower walls of the core assembly, respectively. Reinforcing rods are fixedly installed on both sides of the reinforcing plates.

[0007] Each of the heat exchange tubes passes through a through hole in the reinforcing plate, and an annular rubber bushing is provided between the heat exchange tube and the inner wall of the through hole.

[0008] As a preferred technical solution of this utility model, both the air inlet pipe and the air outlet pipe are conical large and small head structures, with the large end connected to the external pipe and the small end connected to the core cavity.

[0009] As a preferred embodiment of this utility model, the bottom of the core assembly is provided with a water leakage alarm device, which includes two support feet and a liquid level sensor located at the lower end of the core assembly. The liquid level sensor is installed on the inner surface of the core assembly.

[0010] As a preferred technical solution of this utility model, the reinforcing plate is a rectangular steel plate with a uniform array of through holes on its surface, the diameter of which is 1-2 mm larger than the outer diameter of the heat exchange tube.

[0011] As a preferred embodiment of this utility model, the annular rubber bushing is made of neoprene rubber, the inner wall of the annular rubber bushing is interference-fitted with the heat exchange tube, and the outer wall of the annular rubber bushing is clearance-fitted with the through hole of the reinforcing plate.

[0012] Compared with related technologies, the pressure swing adsorption oxygen generator air cooler provided by this utility model has the following beneficial effects:

[0013] This utility model reduces airflow impact force through a pipe design with a large and small head structure, effectively reducing equipment vibration. At the same time, the design of the annular rubber bushing plays a buffering role, reducing equipment vibration and component damage, increasing the service life of the air cooler and the normal operation of the oxygen generation system. The structural rigidity is improved by connecting the reinforcing plates and reinforcing rods by fixed welding. The design of the water leakage alarm device at the bottom of the core assembly means that once water is detected, the liquid level sensor will immediately send a signal to alarm, notifying the management personnel of the equipment malfunction and allowing for timely adjustment. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is the front view of the present utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the core assembly of this utility model;

[0018] Figure 4 This is a partial structural schematic diagram of the reinforcing plate of this utility model.

[0019] The following are the labels in the diagram: 1. Front cover; 2. Rear cover; 3. Core assembly; 31. Heat exchange tube; 32. Side plate; 33. Reinforcing plate; 34. Reinforcing rod; 35. Annular rubber bushing; 4. Air inlet pipe; 5. Air outlet pipe; 6. Leakage alarm device; 61. Support foot; 62. Liquid level sensor. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. Example

[0021] like Figure 1-4 As shown, this utility model discloses a pressure swing adsorption (PSA) oxygen generator air cooler, comprising a front cover 1, a rear cover 2, and a core assembly 3. The front cover 1 is fixedly installed at the front end of the core assembly 3, and the rear cover 2 is fixedly installed at the rear end of the core assembly 3. Multiple parallel heat exchange tubes 31 are arranged inside the core assembly 3. The heat exchange tubes 31 are 25×1.5mm diameter copper tubes. Side plates 32 supporting the heat exchange tubes 31 are provided at both ends of the inner side of the core assembly 3. An air inlet pipe 4 is connected to the left end of the core assembly 3, and an air outlet pipe 5 is connected to the right end of the core assembly 3. Both the air inlet pipe 4 and the air outlet pipe 5 are conical structures with different diameters; the larger end connects to an external pipe, and the smaller end connects to the core assembly. The core assembly 3 is connected to the cavity. This structure is designed to prevent excessive gas flow velocity at the gas inlet from causing equipment vibration and affecting its lifespan. The core assembly 3 has two reinforcing plates 33 inside. The upper and lower ends of the reinforcing plates 33 are fixedly welded to the upper and lower walls of the core assembly 3, respectively. The reinforcing plates 33 are rectangular steel plates with a uniform array of through holes on their surface. The diameter of the through holes is 1-2 mm larger than the outer diameter of the heat exchange tube 31. The reinforcing plates 33 are 8 mm thick and the diameter of the through holes is 26.5 mm. Reinforcing rods 34 are fixedly installed on both sides of the reinforcing plates 33. The reinforcing plates 33, reinforcing rods 34, and side plates 32 are all connected to the core assembly 3 by fixed welding to enhance the stability of the equipment.

[0022] Furthermore, each heat exchange tube 31 passes through a through hole on the reinforcing plate 33, with a through hole diameter of 26.5 mm. An annular rubber bushing 35 is provided between the heat exchange tube 31 and the inner wall of the through hole. The annular rubber bushing 35 is made of neoprene rubber, with an inner diameter of 24.5 mm, an interference fit of 0.5 mm, and an outer diameter of 26 mm. The inner wall of the annular rubber bushing 35 is interference-fitted with the heat exchange tube 31, and the outer wall of the annular rubber bushing 35 is clearance-fitted with the through hole of the reinforcing plate 33. By adding an annular rubber bushing 35 between the heat exchange tube 31 and the reinforcing plate 33, a buffering effect is effectively achieved.

[0023] The core assembly 3 is equipped with a water leakage alarm device 6 at the bottom. The water leakage alarm device 6 includes two support feet 61 located at the lower end of the core assembly 3 and a liquid level sensor 62. The liquid level sensor 62 is installed on the inner surface of the core assembly 3. Once there is water at the bottom of the core assembly 3, the liquid level sensor 62 will sense and send a signal, and the water leakage alarm device 6 will immediately sound an alarm and issue a fault signal.

[0024] The equipment is purged with nitrogen for corrosion prevention before use, ensuring that the inside of the equipment remains dry even if it is not installed for a long time.

[0025] This utility model reduces airflow impact force through the design of the connecting pipe with a large and small head structure, effectively reducing equipment vibration. At the same time, the design of the annular rubber bushing 35 plays a buffering role, reducing equipment vibration and component damage, increasing the service life of the air cooler and the normal operation of the oxygen generation system. The rigidity of the structure is improved by connecting the reinforcing plate 33 and the reinforcing rod 34 by fixed welding. The design of the water leakage alarm device 6 at the bottom of the core assembly 3 means that once water is detected, the liquid level sensor 62 will immediately send a signal to alarm, notifying the management personnel of the equipment failure and timely adjustment.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure swing adsorption (PSA) oxygen generator air cooler, characterized in that: The assembly includes a front cover (1), a rear cover (2), and a core assembly (3). The front cover (1) is fixedly installed at the front end of the core assembly (3), and the rear cover (2) is fixedly installed at the rear end of the core assembly (3). The core assembly (3) has multiple parallel heat exchange tubes (31) inside. The inner ends of the core assembly (3) are provided with side plates (32) to support the heat exchange tubes (31). The left end of the core assembly (3) is connected to an air inlet pipe (4), and the right end of the core assembly (3) is connected to an air outlet pipe (5). The core assembly (3) has two reinforcing plates (33) inside. The upper and lower ends of the reinforcing plates (33) are fixedly welded to the upper and lower walls of the core assembly (3), respectively. Reinforcing rods (34) are fixedly installed on both sides of the reinforcing plates (33). Each of the heat exchange tubes (31) passes through a through hole on the reinforcing plate (33), and an annular rubber bushing (35) is provided between the heat exchange tube (31) and the inner wall of the through hole.

2. The pressure swing adsorption oxygen generator air cooler according to claim 1, characterized in that, Both the air inlet pipe (4) and the air outlet pipe (5) are conical structures with different sizes of ends. The larger end of the conical pipe is connected to an external pipe, and the smaller end is connected to the cavity of the core assembly (3).

3. The pressure swing adsorption oxygen generator air cooler according to claim 1, characterized in that, The core assembly (3) is provided with a water leakage alarm device (6) at the bottom. The water leakage alarm device (6) includes two support feet (61) and a liquid level sensor (62) located at the lower end of the core assembly (3). The liquid level sensor (62) is installed on the inner surface of the core assembly (3).

4. The pressure swing adsorption oxygen generator air cooler according to claim 1, characterized in that, The reinforcing plate (33) is a rectangular steel plate with a uniform array of through holes on its surface. The diameter of the through holes is 1-2 mm larger than the outer diameter of the heat exchange tube (31).

5. The pressure swing adsorption oxygen generator air cooler according to claim 1, characterized in that, The annular rubber bushing (35) is made of neoprene rubber. The inner wall of the annular rubber bushing (35) is press-fitted with the heat exchange tube (31), and the outer wall of the annular rubber bushing (35) is clearance-fitted with the through hole of the reinforcing plate (33).

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