A high-efficiency pressure swing adsorption nitrogen generator integrating modular adsorption towers

Abstract

This utility model relates to the field of nitrogen generation equipment technology, and in particular to a high-efficiency pressure swing adsorption nitrogen generation device with modular adsorption tower integration. It includes a base, a movable structure, a limiting structure, and an adsorption structure. The upper surface of the base has a docking groove, and the inner side of the docking groove has a receiving groove. The movable structure includes a rotating rod, one end of which is movably connected to the interior of the receiving groove. A gear is fixedly connected to the outer surface of the rotating rod. A rack is movably connected to the interior of the receiving groove, and one end of the rack is fixedly connected to a movable plate. The limiting structure includes a locking seat located inside the docking groove. A threaded groove is formed on the side surface of the locking seat. A bolt is threadedly connected to the interior of the movable plate, and one end of the bolt is threadedly connected to the interior of the threaded groove. This utility model can achieve the effect of "fault isolation + quick replacement," realizing the purpose of non-stop maintenance and reducing production losses in continuous production enterprises (such as metallurgy and electronics).

Description

Technical Field

[0001] This utility model relates to the field of nitrogen generation equipment technology, specifically a high-efficiency pressure swing adsorption nitrogen generation device with modular adsorption tower integration. Background Technology

[0002] Pressure swing adsorption (PSA) nitrogen generators are devices that use PSA technology to produce high-purity nitrogen. They use air as raw material and utilize the selective adsorption properties of a high-efficiency, highly selective solid adsorbent to separate nitrogen and oxygen from the air.

[0003] Pressure swing adsorption (PSA) equipment typically requires an adsorption tower to produce nitrogen. However, the core consumables of the adsorption tower (such as carbon molecular sieves) have a limited lifespan and may experience problems such as valve failures and uneven internal airflow distribution during operation. These issues require regular maintenance or replacement. In traditional integrated designs, a single tower failure can cause the entire equipment to shut down, resulting in a long maintenance cycle and severely impacting equipment production. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-efficiency pressure swing adsorption (PSA) nitrogen generator with a modular adsorption tower integration, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency pressure swing adsorption (PSA) nitrogen generator integrating a modular adsorption tower, comprising a base, and further comprising a movable structure, a limiting structure, an adsorption structure, an air inlet structure, an air compression structure, a control structure, and an air outlet structure, wherein:

[0006] The upper surface of the base is provided with a docking groove, and the inner side of the docking groove is provided with a receiving groove.

[0007] The movable structure includes a rotating rod, one end of which is movably connected to the interior of the receiving groove. A gear is fixedly connected to the outer surface of the rotating rod, and a rack is movably connected to the interior of the receiving groove. A movable plate is fixedly connected to one end of the rack.

[0008] The limiting structure includes a snap-fit ​​seat located inside the mating groove. The snap-fit ​​seat has a threaded groove on its side surface. The movable plate is internally threaded with a bolt, one end of which is connected to the internal thread of the threaded groove.

[0009] As a preferred embodiment of this utility model, the number of the docking groove, receiving groove, movable structure and limiting structure is multiple, and they are mirror-symmetrical.

[0010] As a preferred embodiment of the present invention, the adsorption structure includes an adsorption tower, the lower end of which is fixedly connected to the upper surface of the snap-fit ​​seat, a carbon molecular sieve is provided inside the adsorption tower, an inlet pipe is fixedly connected to the outer surface of the adsorption tower, and an outlet pipe is fixedly connected to the upper end of the adsorption tower.

[0011] As a preferred embodiment of the present invention, the air intake structure includes an air intake delivery pipe, one end of which is fixedly connected to one end of an air intake pipe, and a first solenoid valve is fixedly connected to the outer surface of the air intake delivery pipe.

[0012] As a preferred embodiment of this utility model, the air compressor structure includes an air compressor, the lower surface of which is fixedly connected to the upper surface of the base, the output end of which is fixedly connected to the other end of the air inlet pipe, and the input end of which is fixedly connected to an air inlet screen.

[0013] As a preferred embodiment of this utility model, the control structure includes a mounting base, the lower end of which is fixedly connected to the upper surface of the base, and a control box is fixedly connected to the front of the mounting base.

[0014] As a preferred embodiment of the present invention, the air outlet structure includes an air outlet conveying pipe, one end of which is fixedly connected to one end of an air outlet pipe, and a second solenoid valve is fixedly connected to the outer surface of the air outlet conveying pipe.

[0015] Compared with the prior art, this utility model provides a high-efficiency pressure swing adsorption nitrogen generator with modular adsorption tower integration, which has the following beneficial effects:

[0016] 1. This modular adsorption tower integrated high-efficiency pressure swing adsorption nitrogen generator achieves modular design of the adsorption tower through docking tank, receiving tank, movable structure and limiting structure. It can quickly load and unload the adsorption tower, so that when a tower fails, it can be separated from the whole equipment while other modules continue to operate normally. This facilitates the replacement of the faulty tower, thereby achieving the effect of "fault isolation + quick replacement", realizing the purpose of non-stop maintenance and reducing production losses in continuous production enterprises (such as metallurgy and electronics).

[0017] 2. This modular adsorption tower integrated high-efficiency pressure swing adsorption nitrogen generator, through its movable structure, limiting structure and adsorption structure, with multiple movable structures, limiting structures and adsorption structures having completely uniform shapes and sizes, allows the modular adsorption tower to be prefabricated in batches, reducing manufacturing costs. Moreover, it can be flexibly expanded according to production capacity, with modules added or removed as needed, avoiding large one-time investments. This achieves the effect of dynamic changes in equipment production scale with nitrogen production demand, realizing the purpose of cost reduction and efficiency improvement, and greatly improving the convenience and practicality of enterprise production. Attached Figure Description

[0018] Figure 1 This is a first-person view of the overall structure of this utility model;

[0019] Figure 2 This is a second-view overall structural diagram of the present invention;

[0020] Figure 3 This is a third-view overall structural diagram of the present invention;

[0021] Figure 4 This is a cross-sectional view of the internal structure of the receiving groove of this utility model;

[0022] Figure 5 This is an enlarged cross-sectional view of the present invention.

[0023] Figure 6 This utility model Figure 4 Enlarged view of the structure at point A in the middle;

[0024] Figure 7 This is a cross-sectional view of the adsorption structure of this utility model.

[0025] In the diagram: 1. Base; 101. Docking groove; 102. Receiving groove; 2. Movable structure; 201. Rotating rod; 202. Gear; 203. Rack; 204. Movable plate; 3. Limiting structure; 301. Snap-fit ​​seat; 302. Threaded groove; 303. Bolt; 4. Adsorption structure; 401. Adsorption tower; 402. Carbon molecular sieve; 403. Inlet pipe; 404. Outlet pipe; 5. Inlet structure; 501. Inlet delivery pipe; 502. First solenoid valve; 6. Air compressor structure; 601. Air compressor; 602. Inlet screen; 7. Control structure; 701. Mounting base; 702. Control box; 8. Outlet structure; 801. Outlet delivery pipe; 802. Second solenoid valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0027] Please see Figure 1-7 This utility model discloses a high-efficiency pressure swing adsorption (PSA) nitrogen generator with modular adsorption tower integration, including a base 1, a movable structure 2, a limiting structure 3, an adsorption structure 4, an air inlet structure 5, an air compression structure 6, a control structure 7, and an air outlet structure 8, wherein:

[0028] The upper surface of the base 1 is provided with a docking groove 101. The docking groove 101 is shaped like a "冂" character from a side view, and the clamping seat 301 can be correspondingly inserted. The inner side surface of the docking groove 101 is provided with a receiving groove 102, and the inside of the receiving groove 102 can accommodate the retracted movable structure 2, facilitating the access of the clamping seat 301.

[0029] The movable structure 2 includes a rotating rod 201. One end of the rotating rod 201 is movably connected to the inside of the receiving groove 102, and the other end of the rotating rod 201 extends outside the base 1 through the inside of the receiving groove 102. A rotating handle is fixedly connected to the other end of the rotating rod 201. A gear 202 is fixedly connected to the outer surface of the rotating rod 201. A rack 203 is movably connected to the inside of the receiving groove 102. One end of the rack 203 is fixedly connected to a movable plate 204. In one movable structure 2, the number of the racks 203 and the movable plates 204 is two, and the two racks 203 and the two movable plates 204 are mirror-symmetrical to each other. The two racks 203 are respectively meshed with the gear 202. By rotating the gear 202, the two racks 203 respectively drive the two movable plates 204 to approach or move away from each other, thereby realizing the limiting and fixing of the limiting structure 3.

[0030] The limiting structure 3 includes a clamping seat 301. The clamping seat 301 is located inside the docking groove 101. The shape of the clamping seat 301 corresponds to the shape of the docking groove 101, facilitating the docking with the docking groove 101. A threaded groove 302 is provided on the side surface of the clamping seat 301. A bolt 303 is threadedly connected to the inside of the movable plate 204. One end of the bolt 303 is threadedly connected to the inside of the threaded groove 302. Through the connection of the bolt 303, the movable plate 204 is connected and fixed to the clamping seat 301, thereby restricting the movement of the clamping seat 301.

[0031] The number of the docking groove 101, the receiving groove 102, the movable structure 2 and the limiting structure 3 is multiple and they are mirror-symmetrical. The multiple docking grooves 101, receiving grooves 102, movable structures 2 and limiting structures 3 enable multiple modular adsorption towers to be integrated into a pressure swing adsorption device, facilitating the expansion of the production scale, avoiding the idle of some equipment and waste of funds caused by designing according to the maximum scale in the initial stage, or the increase in cost caused by replacing the whole equipment during later production expansion when designed according to demand in the initial stage, thereby achieving the purpose of cost reduction and efficiency improvement, greatly improving the convenience and practicality of enterprise production. In this utility model, for the convenience of introduction, taking Figure 1 as an example, the multiple docking grooves 101, receiving grooves 102, movable structures 2 and limiting structures 3 are respectively named as front left, rear left, front right and rear right. The front left and the front right are installed with adsorption structures 4 as required and put into use, and the positions of the rear left and the rear right are left empty, facilitating the enterprise to expand according to needs.

[0032] The adsorption structure 4 includes an adsorption tower 401. An exhaust valve is fixedly connected to the outer surface of the adsorption tower 401, which reduces the gas pressure inside the tower, thus performing a pressure reduction operation. The lower end of the adsorption tower 401 is fixedly connected to the upper surface of the mounting base 301. A carbon molecular sieve 402 is installed inside the adsorption tower 401. The carbon molecules in the carbon molecular sieve 402 act as the adsorbent. Because the diameter of oxygen molecules (0.346 nm) is slightly smaller than that of nitrogen molecules (0.364 nm), and oxygen is more polar, under the same conditions, carbon molecules... The adsorption rate and capacity of sieve 402 for oxygen are much higher than that for nitrogen, thus achieving the separation of nitrogen and oxygen and realizing the nitrogen production function. An inlet pipe 403 is fixedly connected to the outer surface of the adsorption tower 401, and an outlet pipe 404 is fixedly connected to the upper end of the adsorption tower 401. The input and output of the reaction gas are realized through the inlet pipe 403 and the outlet pipe 404. When compressed air enters the adsorption tower 401, the pressure inside the adsorption tower 401 gradually increases during the continuous input process. Under high pressure, the adsorption capacity of the adsorbent is enhanced (more oxygen is "captured" in the micropores), the nitrogen is separated, and it is transported out of the adsorption tower 401 through the outlet pipe 404. After the separation is completed, the gas supply of the inlet pipe 403 is stopped, the exhaust valve is opened, and the pressure inside the adsorption tower 401 is reduced. Under low pressure, the adsorption capacity is weakened, and the adsorbed oxygen will desorb from the micropores (detach from the adsorbent), regenerating the adsorbent and realizing the pressure swing adsorption function.

[0033] The air intake structure 5 includes an air intake delivery pipe 501. One end of the air intake delivery pipe 501 is fixedly connected to one end of the air intake pipe 403. One end of the air intake delivery pipe 501 is divided into four connection ports, which correspond to the installation positions of the air intake pipe 403 in the adsorption structure 4 at the four positions of left front, left rear, right front and right rear, respectively. A first solenoid valve 502 is fixedly connected to the outer surface of the air intake delivery pipe 501. The first solenoid valve 502 can control the opening and closing of the four connection ports of the air intake delivery pipe 501 respectively, thereby realizing the control of the gas flow direction (whether air is intake or not).

[0034] The compressed air structure 6 includes an air compressor 601. The lower surface of the air compressor 601 is fixedly connected to the upper surface of the base 1. The output end of the air compressor 601 is fixedly connected to the other end of the air inlet delivery pipe 501. The air compressor 601 converts atmospheric pressure air into high pressure air and delivers it to the air inlet delivery pipe 501, which then enters the adsorption tower 401, increasing the pressure inside the adsorption tower 401. An air inlet screen 602 is fixedly connected to the input end of the air compressor 601. The air inlet screen 602 filters the atmospheric pressure air to prevent impurities from entering the adsorption tower 401.

[0035] The control structure 7 includes a mounting base 701, the lower end of which is fixedly connected to the upper surface of the base 1. A control box 702 is fixedly connected to the front of the mounting base 701. The control box 702 can control the start and stop of the equipment and other functions.

[0036] The gas outlet structure 8 includes a gas outlet conveying pipe 801. The other end of the gas outlet conveying pipe 801 is connected to a gas storage tank, which can transport the produced nitrogen gas to the tank for storage. One end of the gas outlet conveying pipe 801 is fixedly connected to one end of the gas outlet pipe 404. One end of the gas outlet conveying pipe 801 is divided into four connection ports, which correspond to the installation positions of the gas outlet pipe 404 in the adsorption structure 4 at the four positions of left front, left rear, right front and right rear, respectively. A second solenoid valve 802 is fixedly connected to the outer surface of the gas outlet conveying pipe 801. The four connection ports of the gas outlet conveying pipe 801 and the exhaust valve can be controlled by the second solenoid valve 802, thereby realizing the control of the gas flow direction (nitrogen flow direction and whether or not exhaust).

[0037] The working principle and usage process of this utility model are as follows: First, the entire equipment is installed in the corresponding installation position. According to the production scale requirements and continuous production needs, the two limiting structures 3 and the adsorption structure 4 are installed in the corresponding positions of the left front and right front, respectively, so that the two snap-fit ​​seats 301 are respectively connected into the docking grooves 101 of the left front and right front. Then, the corresponding rotating handle is rotated to make the movable plate 204 in the movable structure 2 corresponding to the left front and right front extend out. Then, the movable plate 204 and the snap-fit ​​seat 301 are connected and fixed by bolts 303 to complete the modular installation.

[0038] Then, the left and right front connection ports of the air inlet pipe 501 and the air outlet pipe 801 are connected and fixed to the two air inlet pipes 403 and the air outlet pipe 404 respectively. The second solenoid valve 802 is connected to the two exhaust valves respectively. The other end of the air outlet pipe 801 is connected and fixed to the air storage tank to complete the overall installation of the equipment.

[0039] During use, the device is started by controlling the control box 702. The first solenoid valve 502 and the second solenoid valve 802 work to connect the left front port of the inlet air delivery pipe 501 and the outlet air delivery pipe 801, while the other three ports are closed. Atmospheric air enters the air compressor 601 through the filter of the inlet air screen 602. After being compressed by the air compressor 601, it is delivered to the inlet air delivery pipe 501 and enters the left front adsorption tower 401 through the inlet air pipe 403. Under high pressure, oxygen molecules are adsorbed by the carbon molecular sieve 402. Nitrogen gas, due to its low adsorption amount, is output as product gas from the outlet air pipe 404 and enters the gas storage tank through the outlet air delivery pipe 801.

[0040] When the adsorption of the left front adsorption tower 401 is close to saturation, the first solenoid valve 502 and the second solenoid valve 802 work to close the left front port and open the right front port, allowing compressed air to enter the right front adsorption tower 401, and repeat the pressurization and adsorption operation.

[0041] The second solenoid valve 802 opens the channel of the exhaust valve corresponding to the left front adsorption tower 401, allowing the gas in the left front adsorption tower 401 to be discharged and the pressure to be reduced. At this time, the oxygen, carbon dioxide and other impurities adsorbed by the carbon molecular sieve 402 are desorbed and discharged from the exhaust valve with the waste gas, realizing the regeneration of the adsorbent. The left front and right front adsorption towers 401 work alternately to realize the continuous production of nitrogen.

[0042] When it is necessary to expand the scale, simply install the corresponding module in the left rear or right rear position, and control the opening and closing of the corresponding port through the first solenoid valve 502 and the second solenoid valve 802 to expand the nitrogen production.

[0043] When maintenance or replacement is required, close the corresponding ports by using the first solenoid valve 502 and the second solenoid valve 802, then unscrew the bolt 303, reverse the handle, retract the movable plate 204, then separate the air inlet pipe 403 and the air outlet pipe 404 from the corresponding ports, and disconnect the second solenoid valve 802 from the corresponding exhaust valve. The module that needs to be replaced can then be removed and replaced.

[0044] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A modular adsorption column integrated high efficiency pressure swing adsorption nitrogen generation plant comprising a base (1) characterised in that: It also includes an active structure (2), a limiting structure (3), an adsorption structure (4), an air intake structure (5), an air compression structure (6), a control structure (7), and an air outlet structure (8), wherein: The upper surface of the base (1) is provided with a docking groove (101), and the inner side of the docking groove (101) is provided with a receiving groove (102). The movable structure (2) includes a rotating rod (201), one end of which is movably connected to the interior of the receiving groove (102), a gear (202) is fixedly connected to the outer surface of the rotating rod (201), a rack (203) is movably connected to the interior of the receiving groove (102), and a movable plate (204) is fixedly connected to one end of the rack (203). The limiting structure (3) includes a snap-fit ​​seat (301), which is located inside the mating groove (101). The side surface of the snap-fit ​​seat (301) is provided with a threaded groove (302). The movable plate (204) is internally threaded with a bolt (303), and one end of the bolt (303) is internally threaded with the threaded groove (302).

2. The modular adsorber integrated high efficiency pressure swing adsorption nitrogen generation plant as claimed in claim 1 wherein: The number of docking grooves (101), receiving grooves (102), movable structures (2) and limiting structures (3) are multiple and are mirror-symmetrical.

3. The high-efficiency pressure swing adsorption nitrogen generator with modular adsorption tower integration according to claim 1, characterized in that: The adsorption structure (4) includes an adsorption tower (401), the lower end of which is fixedly connected to the upper surface of the mounting base (301), a carbon molecular sieve (402) is provided inside the adsorption tower (401), an inlet pipe (403) is fixedly connected to the outer surface of the adsorption tower (401), and an outlet pipe (404) is fixedly connected to the upper end of the adsorption tower (401).

4. The high-efficiency pressure swing adsorption nitrogen generator with modular adsorption tower integration according to claim 1, characterized in that: The air intake structure (5) includes an air intake delivery pipe (501), one end of which is fixedly connected to one end of the air intake pipe (403), and a first solenoid valve (502) is fixedly connected to the outer surface of the air intake delivery pipe (501).

5. The high-efficiency pressure swing adsorption nitrogen generator with modular adsorption tower integration according to claim 1, characterized in that: The air compressor structure (6) includes an air compressor (601), the lower surface of the air compressor (601) is fixedly connected to the upper surface of the base (1), the output end of the air compressor (601) is fixedly connected to the other end of the air inlet pipe (501), and the input end of the air compressor (601) is fixedly connected to an air inlet screen (602).

6. The high-efficiency pressure swing adsorption nitrogen generator with modular adsorption tower integration according to claim 1, characterized in that: The control structure (7) includes a mounting base (701), the lower end of which is fixedly connected to the upper surface of the base (1), and a control box (702) is fixedly connected to the front of the mounting base (701).

7. The high-efficiency pressure swing adsorption nitrogen generator with modular adsorption tower integration according to claim 1, characterized in that: The air outlet structure (8) includes an air outlet conveying pipe (801), one end of which is fixedly connected to one end of an air outlet pipe (404), and a second solenoid valve (802) is fixedly connected to the outer surface of the air outlet conveying pipe (801).

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