Axial adsorption tower pipeline connecting structure suitable for VPSA (Vacuum Pressure Swing Adsorption) process

Abstract

The utility model relates to the technical field of pipeline connection of a VPSA (Vacuum Pressure Swing Adsorption) process, in particular to an axial adsorption tower pipeline connection structure suitable for the VPSA process, which comprises a conveying pipeline for conveying gas and an exhaust pipeline fixed at the bottom of an axial adsorption tower, the top of the conveying pipeline is fixedly connected with a connecting pipe, and a connecting structure is arranged between the connecting pipe and the exhaust pipeline. A second connecting groove in the top of a connecting pipe is inserted into an exhaust pipeline, then a connecting bolt is inserted into the exhaust pipeline, the connecting pipe can be stably fixed to the exhaust pipeline, then a sealing ring is arranged in a matched mode, and therefore the safety of the VPSA system can be prevented from being affected; conveying pipelines with different heights can be conveniently supported and fixed, safety accidents such as breakage or leakage of the conveying pipelines due to external force can be prevented, and therefore the safety of the VPSA system can be prevented from being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pipeline connection technical field of VPSA process, especially to a kind of pipeline connection structure suitable for VPSA process axial adsorption tower. BACKGROUND

[0002] VPSA (low pressure adsorption vacuum desorption) oxygen production technology is an advanced oxygen generation technology, which separates high-concentration oxygen from air through physical adsorption principle. This technology has the characteristics of environmental protection and high efficiency, and does not need to use any chemical raw materials, and can realize continuous and stable production of oxygen by driving only by electric energy. VPSA oxygen production equipment is mainly composed of a blower, a vacuum pump, a cooler, an adsorption system, an oxygen buffer tank and a control system, wherein the adsorption system is the core part, which is composed of an adsorption tower filled with zeolite molecular sieve adsorbent and pipeline valves.

[0003] In VPSA process, the adsorption tower is the key equipment for oxygen separation. After the raw air is pressurized, cooled and dried by the blower, it enters the adsorption tower. In the adsorption tower, nitrogen, carbon dioxide and water vapor and other impurities are adsorbed by the molecular sieve, and oxygen is collected at the top of the adsorption bed and output as product gas. In order to ensure the continuous production of the system, two or more adsorption towers are generally provided in the VPSA system, which work alternately, so that when one tower adsorbs nitrogen, the other tower regenerates, thereby realizing the continuous and stable output of oxygen.

[0004] However, the pipeline connection structure of the axial adsorption tower in the prior art has some problems, such as unstable connection of some connecting pipes in the equipment and the exhaust pipe connection at the bottom of the axial adsorption tower, which may have the risk of leakage, thereby affecting the safety of the VPSA system, therefore, a pipeline connection structure suitable for VPSA process axial adsorption tower is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem of unstable connection of connecting pipes and exhaust pipe connection at the bottom of the axial adsorption tower in the prior art, which may have the risk of leakage, thereby affecting the safety of the VPSA system, and proposes a pipeline connection structure suitable for VPSA process axial adsorption tower.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A pipeline connection structure suitable for VPSA process axial adsorption tower, comprising a conveying pipe for conveying gas and an exhaust pipe fixed at the bottom of the axial adsorption tower, a supporting mechanism is arranged below the conveying pipe, a connecting pipe is fixedly connected to the top of the conveying pipe, and a connecting structure is arranged between the connecting pipe and the exhaust pipe.

[0008] Preferably, the support mechanism comprises a support plate arranged in an arc shape, the bottom of the support plate is fixedly connected with a support screw rod, the outer side of the support screw rod is provided with a support pipe, the inner wall of the support pipe is provided with an internal thread, and the support screw rod is threadedly connected with the support pipe.

[0009] Preferably, the bottom of the support pipe is fixedly connected with a support base arranged in a circular shape, and the top of the outer wall of the support pipe is fixedly connected with adjusting handles arranged in a circular equidistant distribution.

[0010] Preferably, the connecting structure comprises connecting bolts arranged in a symmetrical manner, the bottom outer wall of the exhaust pipe is provided with a first connecting groove in a circular ring shape in section, the top of the connecting pipe is fixedly connected with a connecting plate in a circular ring shape, the top of the connecting plate is provided with a second connecting groove, the outer wall of the exhaust pipe is slidably connected with the inner wall of the second connecting groove, and the first connecting groove is slidably connected with the inner wall of the connecting pipe.

[0011] Preferably, the second connecting groove is provided with a sealing ring inside, the outer wall of the sealing ring is attached to the second connecting groove, the inner wall of the sealing ring is attached to the first connecting groove, the top of the sealing ring is attached to the exhaust pipe, the top of the connecting plate is symmetrically provided with a limiting groove, the outer wall of the exhaust pipe is symmetrically fixedly connected with a limiting plate, and the limiting plate is slidably connected with the limiting groove.

[0012] Preferably, the outer wall of the connecting plate is symmetrically provided with connecting holes arranged in a T-shaped section, the outer wall of the exhaust pipe is symmetrically provided with connecting thread grooves, the connecting bolts pass through the connecting holes, and the connecting bolts are threadedly connected with the connecting thread grooves.

[0013] Compared with the prior art, the device has the following beneficial effects:

[0014] 1、In use, the connecting structure is used to insert the second connecting groove at the top of the connecting pipe into the exhaust pipe, and then the connecting bolts are inserted into the exhaust pipe, so that the connecting pipe can be stably fixed on the exhaust pipe, and the sealing ring can be effectively prevented from leaking, thereby avoiding affecting the safety of the VPSA system.

[0015] 2、In use, the support mechanism is used to adjust the height of the support plate, so that the support plate can be conveniently used to support and fix the conveying pipe with different heights, so that the conveying pipe can be prevented from being broken or leaking due to external force, thereby avoiding affecting the safety of the VPSA system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1The utility model provides an external three -dimensional structure schematic drawing suitable for VPSA process axial adsorption tower pipeline connecting structure is provided.

[0017] Figure 2 It is connecting three -dimensional structure schematic drawing of connecting structure;

[0018] Figure 3 It is connecting three -dimensional structure schematic drawing of second connecting groove, sealing ring, limit groove;

[0019] Figure 4 It is three -dimensional structure schematic drawing of connecting thread groove, first connecting groove and limit board.

[0020] In the drawing: 1, conveying pipeline;2, exhaust pipeline;3, connecting pipe;4, support plate;5, support screw;6, support pipe;7, support base;8, adjusting handle;9, connecting bolt;10, first connecting groove;11, connecting plate;12, second connecting groove;13, sealing ring;14, limit groove;15, limit board;16, connecting hole;17, connecting thread groove. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Referring to Figures 1-4 A kind of axial adsorption tower pipeline connecting structure suitable for VPSA process, including the conveying pipeline 1 for conveying gas and fixed in the exhaust pipeline 2 of axial adsorption tower bottom, the support mechanism is provided in the lower of conveying pipeline 1, the top of conveying pipeline 1 is fixedly connected with connecting pipe 3, connecting pipe 3 and the connecting structure between exhaust pipeline 2 are provided.

[0023] It should be noted that VPSA process and axial adsorption tower are prior art, and the specific model specification of adsorption tower needs to be selected and determined according to the actual specification of the device, and the specific selection calculation method uses the prior art in the art, so it is not described, and power can be provided by external equipment and controlled to open and close.

[0024] Further, the supporting mechanism comprises a support plate 4 arranged in an arc shape, the bottom of the support plate 4 is fixedly connected with a support screw 5, the outer side of the support screw 5 is provided with a support pipe 6, the inner wall of the support pipe 6 is provided with an internal thread, the support screw 5 is threadedly connected with the support pipe 6, the bottom of the support pipe 6 is fixedly connected with a support base 7 arranged in a circular shape, and the outer wall top of the support pipe 6 is fixedly connected with adjustment handles 8 arranged in a circumferential equidistant manner. It should be noted that the support pipe 6 is controlled to rotate around the support screw 5 by the adjustment handles 8, so that the support plate 4 is attached to the bottom of the conveying pipeline 1, and the bottom of the support base 7 is attached to the ground, thereby facilitating the support and fixation of the conveying pipeline 1 at different heights, and preventing the conveying pipeline 1 from being broken or leaking due to external force, thereby avoiding affecting the safety of the VPSA system.

[0025] Further, the connecting structure comprises symmetrically arranged connecting bolts 9, the bottom outer wall of the exhaust pipeline 2 is provided with a first connecting groove 10 in a circular ring shape, the top of the connecting pipe 3 is fixedly connected with a connecting plate 11 in a circular ring shape, the top of the connecting plate 11 is provided with a second connecting groove 12, the outer wall of the exhaust pipeline 2 is slidably connected with the inner wall of the second connecting groove 12, and the first connecting groove 10 is slidably connected with the inner wall of the connecting pipe 3. It should be noted that the connecting bolt 9 is inserted through the connecting hole 16 and screwed into the connecting thread groove 17, so that the connecting pipe 3 can be stably fixed at the bottom of the exhaust pipeline 2, which can effectively prevent leakage and thus avoid affecting the safety of the VPSA system.

[0026] Further, the second connecting groove 12 is provided with a sealing ring 13 inside, the outer wall of the sealing ring 13 is attached to the second connecting groove 12, the inner wall of the sealing ring 13 is attached to the first connecting groove 10, and the top of the sealing ring 13 is attached to the exhaust pipeline 2. It should be noted that the sealing ring 13 is extruded by the exhaust pipeline 2 and the connecting plate 11, and after the exhaust pipeline 2 and the connecting pipe 3 are installed and fixed, leakage can be effectively prevented, thereby also avoiding affecting the safety of the VPSA system.

[0027] The top of the connecting plate 11 is symmetrically provided with a limiting groove 14, the outer wall of the exhaust pipeline 2 is symmetrically fixedly connected with a limiting plate 15, and the limiting plate 15 is slidably connected with the limiting groove 14. It should be noted that after the two limiting plates 15 are respectively inserted into the two limiting grooves 14, the connecting thread groove 17 can be aligned with the connecting hole 16, at which time the connecting bolt 9 can be inserted from the connecting hole 16 into the connecting thread groove 17. The limiting plate 15 and the limiting groove 14 play an auxiliary positioning role.

[0028] Further, the outer wall of the connecting plate 11 is symmetrically provided with a T-shaped connecting hole 16, the outer wall of the exhaust pipe 2 is symmetrically provided with a connecting thread groove 17, the connecting bolt 9 penetrates the connecting hole 16, and the connecting bolt 9 is screwed with the connecting thread groove 17.

[0029] The working principle of the utility model is as follows:

[0030] Firstly, the sealing ring 13 is placed in the second connecting groove 12, then the second connecting groove 12 at the top of the connecting pipe 3 is inserted into the exhaust pipe 2, and the exhaust pipe 2 is inserted into the connecting pipe 3;

[0031] Then, the connecting bolt 9 is inserted through the connecting hole 16 and screwed into the connecting thread groove 17, so that the connecting pipe 3 can be stably fixed at the bottom of the exhaust pipe 2, and the leakage can be effectively prevented, thereby avoiding the influence on the safety of the VPSA system.

[0032] Finally, the supporting pipe 6 is controlled to rotate and adjust around the supporting screw 5 through the adjusting handle 8, and the supporting plate 4 is attached to the bottom of the conveying pipe 1, and the bottom of the supporting base 7 is attached to the ground, so that the safety accidents such as rupture or leakage of the conveying pipe 1 due to external force can be prevented, thereby avoiding the influence on the safety of the VPSA system.

[0033] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A pipeline connection structure suitable for axial adsorption towers in VPSA processes, comprising a gas delivery pipeline (1) and an exhaust pipeline (2) fixed to the bottom of the axial adsorption tower, characterized in that, A support mechanism is provided below the conveying pipe (1), and a connecting pipe (3) is fixedly connected to the top of the conveying pipe (1). A connecting structure is provided between the connecting pipe (3) and the exhaust pipe (2).

2. The pipeline connection structure for an axial adsorption tower in a VPSA process according to claim 1, characterized in that, The support mechanism includes an arc-shaped support plate (4), a support screw (5) is fixedly connected to the bottom of the support plate (4), a support tube (6) is provided on the outside of the support screw (5), the inner wall of the support tube (6) is provided with internal threads, and the support screw (5) is threadedly connected to the support tube (6).

3. The pipeline connection structure for an axial adsorption tower in a VPSA process according to claim 2, characterized in that, The bottom of the support tube (6) is fixedly connected to a circular support base (7), and the top of the outer wall of the support tube (6) is fixedly connected to an adjusting handle (8) that is circumferentially distributed.

4. The pipeline connection structure for an axial adsorption tower in a VPSA process according to claim 1, characterized in that, The connection structure includes symmetrically arranged connecting bolts (9), the bottom outer wall of the exhaust pipe (2) is provided with a first connecting groove (10) with a circular cross section, the top of the connecting pipe (3) is fixedly connected with a circular connecting plate (11), the top of the connecting plate (11) is provided with a second connecting groove (12), the outer wall of the exhaust pipe (2) is slidably connected to the inner wall of the second connecting groove (12), and the first connecting groove (10) is slidably connected to the inner wall of the connecting pipe (3).

5. A pipeline connection structure suitable for axial adsorption towers in VPSA processes according to claim 4, characterized in that, A sealing ring (13) is provided inside the second connecting groove (12). The outer wall of the sealing ring (13) is in contact with the second connecting groove (12), the inner wall of the sealing ring (13) is in contact with the first connecting groove (10), and the top of the sealing ring (13) is in contact with the exhaust pipe (2). A limiting groove (14) is symmetrically opened on the top of the connecting plate (11). A limiting plate (15) is symmetrically fixedly connected to the outer wall of the exhaust pipe (2). The limiting plate (15) is slidably connected to the limiting groove (14).

6. A pipeline connection structure suitable for axial adsorption towers in VPSA processes according to claim 4, characterized in that, The outer wall of the connecting plate (11) is symmetrically provided with connecting holes (16) with a T-shaped cross section, and the outer wall of the exhaust pipe (2) is symmetrically provided with connecting thread grooves (17). The connecting bolt (9) passes through the connecting hole (16) and is threadedly connected to the connecting thread groove (17).

Images