Air inlet pipeline of adsorption barrel of nitrogen making machine

Abstract

The utility model discloses a gas inlet pipeline of an adsorption barrel of a nitrogen making machine, which belongs to the technical field of nitrogen making machines and comprises two groups of inlet pipes, one ends of the inlet pipes are communicated with middle pipes, a lower gas distribution pipe and an upper gas distribution pipe are connected between the two groups of middle pipes, two groups of first angle seat valves are arranged on the lower gas distribution pipe, and the middle position of the lower gas distribution pipe is further communicated with an exhaust pipe. The middle position of the upper gas distribution pipe is communicated with a middle pipe, second angle seat valves are arranged on the upper gas distribution pipe and located on the two sides of the middle pipe, one side of the middle pipe is communicated with a gas inlet pipe, the top end of the middle pipe is communicated with a pressure equalizing pipe, gas conveying pipes are arranged at the two ends of the pressure equalizing pipe, and third angle seat valves are arranged on the pressure equalizing pipe and located on the two sides of the middle pipe. The adsorption barrel is filled with high-purity nitrogen through the pipeline, so that on one hand, the pressure difference can be reduced, and pulverization caused by impact on an adsorbent due to the fact that the pressure difference is too large during switching is avoided; on the other hand, the nitrogen production rate of the adsorbent can be improved by filling high-purity nitrogen, and the nitrogen production time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen generators, and specifically relates to an air inlet pipeline of an adsorption barrel of a nitrogen generator. Background Art

[0002] The pressure swing adsorption nitrogen generator (referred to as PSA nitrogen generator for short) is a nitrogen generating device designed and manufactured according to the pressure swing adsorption technology. It uses air as raw material and high-quality carbon molecular sieve as adsorbent, applies the pressure swing adsorption principle (PSA), and uses the molecular sieve filled with micropores to selectively adsorb air to achieve the purpose of oxygen-nitrogen separation.

[0003] For the above technical conditions, there are still defects: the existing air inlet pipeline of the nitrogen generator directly inputs the filtered air into the interior of the adsorption barrel for adsorption. When the function is switched, the air pressure inside the adsorption tower is not balanced enough, which easily causes the adsorbent to be pulverized and reduces the use effect of the adsorption tower.

[0004] Based on this, the utility model designs an air inlet pipeline of an adsorption barrel of a nitrogen generator to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an air inlet pipeline of an adsorption barrel of a nitrogen generator to solve the above technical problems.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an air inlet pipeline of an adsorption barrel of a nitrogen generator, including inlet pipes respectively connected to two groups of adsorption barrels. One end of the inlet pipe is connected to a side pipe. A lower branch pipe and an upper branch pipe are connected between the two side pipes. Two one-way angle seat valves are arranged on the lower branch pipe. An exhaust pipe is also connected to the middle position of the lower branch pipe. A middle pipe is connected to the middle position of the upper branch pipe. Two two-way angle seat valves are arranged on both sides of the middle pipe on the upper branch pipe. An air inlet pipe is connected to one side of the middle pipe. A pressure equalizing pipe is connected to the top of the middle pipe. Gas transmission pipes are arranged at both ends of the pressure equalizing pipe. Two three-way angle seat valves are arranged on both sides of the middle pipe on the pressure equalizing pipe.

[0007] By adopting the above technical solution, an appropriate amount of high-purity nitrogen can be filled into the interior of the adsorption barrel to increase the air pressure stability during its subsequent working process.

[0008] Preferably, the gas transmission pipe is connected to the middle position of the adsorption barrel.

[0009] By adopting the above technical solution, it can be transported to more positions.

[0010] Preferably, the two one-way angle seat valves can control the partial opening and closing of the lower branch pipe and the exhaust pipe. The two two-way angle seat valves can control the partial opening and closing of the upper branch pipe and the middle pipe. The two three-way angle seat valves can control the partial opening and closing of the pressure equalizing pipe.

[0011] By adopting the above technical solution, the air intake effect of the nitrogen generator is controlled by three angle seat valves.

[0012] Preferably, flange plates are provided at the joints where the inlet pipe and the gas transmission pipe are installed on the adsorption barrel.

[0013] By adopting the above technical solution, it is convenient for installation and connection.

[0014] In summary, the present application has the following beneficial technical effects: By filling the adsorption barrel with high-purity nitrogen through this pipeline, on the one hand, the pressure difference can be reduced to avoid excessive pressure difference during switching, which may cause impact on the adsorbent and lead to pulverization; on the other hand, filling with high-purity nitrogen can improve the nitrogen production rate of the adsorbent and shorten the nitrogen production time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 It is a schematic diagram of the installation of the intake pipeline in this embodiment.

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1, base; 2, gas storage barrel; 3, adsorption barrel; 4, intake pipeline; 5, inlet pipe; 6, side pipe; 7, lower gas distribution pipe; 8, first angle seat valve; 9, upper gas distribution pipe; 10, middle pipe; 11, intake pipe; 12, second angle seat valve; 13, equalizing pipe; 14, gas transmission pipe; 15, third angle seat valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] The following is a further detailed description of the present application with reference to the attached Figure 1-2 This application will be further described in detail.

[0022] Reference Figure 2 A nitrogen generator, which includes a base 1. There are two groups of adsorption barrels 3 and two groups of gas storage barrels 2 arranged on the base 1. An air outlet pipeline is also arranged between the two groups of adsorption barrels 3. The bottom ends of the two groups of adsorption barrels 3 are also connected to an intake pipeline 4. Various mufflers are also arranged on the base 1.

[0023] Reference Figure 1 An intake pipeline of an adsorption barrel of a nitrogen generator, which includes inlet pipes 5 respectively connected to the two groups of adsorption barrels 3. One end of the inlet pipe 5 is connected to a side pipe 6. A lower gas distribution pipe 7 and an upper gas distribution pipe 9 are connected between the two groups of side pipes 6. Two groups of first angle seat valves 8 are arranged on the lower gas distribution pipe 7. An exhaust pipe is also connected to the middle position of the lower gas distribution pipe 7. A middle pipe 10 is connected to the middle position of the upper gas distribution pipe 9. Second angle seat valves 12 are arranged on both sides of the middle pipe 10 on the upper gas distribution pipe 9. An intake pipe 11 is connected to one side of the middle pipe 10. A pressure equalizing pipe 13 is connected to the top end of the middle pipe 10. Gas transmission pipes 14 are arranged at both ends of the pressure equalizing pipe 13. The gas transmission pipes 14 are connected to the middle positions on the adsorption barrels 3, and can input high-purity nitrogen into the interiors of the adsorption barrels 3 in advance. On the one hand, it can reduce the pressure difference and avoid excessive pressure difference during switching, which may cause impact on the adsorbent and lead to pulverization; on the other hand, filling high-purity nitrogen can improve the nitrogen production rate of the adsorbent and shorten the nitrogen production time. Third angle seat valves 15 are arranged on both sides of the middle pipe 10 on the pressure equalizing pipe 13.

[0024] Furthermore, the two groups of first angle seat valves 8 can control the partial opening and closing of the lower gas distribution pipe 7 and the opening and closing of the exhaust pipe.

[0025] Furthermore, the two groups of second angle seat valves 12 can control the partial opening and closing of the upper gas distribution pipe 9 and the opening and closing of the middle pipe 10.

[0026] Furthermore, the two groups of third angle seat valves 15 can control the partial opening and closing of the pressure equalizing pipe 13.

[0027] Furthermore, flange plates are arranged at the connection positions of the inlet pipes 5 and the gas transmission pipes 14 installed on the adsorption barrels 3.

[0028] The implementation principle of this embodiment is: when in use, high-purity nitrogen is filled into the tower body by using this pipeline. On the one hand, it can reduce the pressure difference and avoid excessive pressure difference during switching, which may cause impact on the adsorbent and lead to pulverization; on the other hand, filling high-purity nitrogen can improve the nitrogen production rate of the adsorbent and shorten the nitrogen production time.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air inlet pipeline for an adsorption barrel of a nitrogen generator, comprising inlet pipes (5) respectively connected to two groups of adsorption barrels (3), characterized in that: One end of the inlet pipe (5) is connected to a side pipe (6), a lower air pipe (7) and an upper air pipe (9) are connected between the two groups of side pipes (6), two groups of first angle seat valves (8) are arranged on the lower air pipe (7), the middle position of the lower air pipe (7) is also connected to an exhaust pipe, the middle position of the upper air pipe (9) is connected to a middle pipe (10), second angle seat valves (12) are arranged on the upper air pipe (9) and on both sides of the middle pipe (10), one side of the middle pipe (10) is connected to an air inlet pipe (11), the top end of the middle pipe (10) is connected to a pressure equalizing pipe (13), both ends of the pressure equalizing pipe (13) are provided with air delivery pipes (14), and third angle seat valves (15) are arranged on the pressure equalizing pipe (13) and on both sides of the middle pipe (10).

2. The air inlet pipeline of the nitrogen generator adsorption barrel according to claim 1 is characterized in that: The gas delivery pipe (14) is connected to a middle position on the adsorption barrel (3).

3. The air inlet pipeline of the nitrogen generator adsorption barrel according to claim 1 is characterized in that: The two groups of No. 1 angle seat valves (8) can control the partial opening and closing of the lower gas distribution pipe (7) and the opening and closing of the exhaust pipe.

4. The air inlet pipeline of the nitrogen generator adsorption barrel according to claim 1 is characterized in that: The two groups of the second angle seat valves (12) can control the partial opening and closing of the upper air pipe (9) and the opening and closing of the middle pipe (10).

5. The air inlet pipeline of the nitrogen generator adsorption barrel according to claim 1 is characterized in that: The two groups of the third angle seat valves (15) are capable of controlling the partial opening and closing of the pressure equalizing tube (13).

6. The air inlet pipeline of the nitrogen generator adsorption barrel according to claim 1 is characterized in that: Flanges are provided at the connection points where the inlet pipe (5) and the gas delivery pipe (14) are installed on the adsorption barrel (3).

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